Index Catalog // ScholarsArchive@OSU

Mycorrhizal and other root endophytic fungi of lupines in the Pacific Northwest

Creator:: O'Dell, Thomas E.
Abstract:: We investigated the root endophytic fungi of lupine using four approaches: (1) occurrence of fungal colonization in field-collected roots; (2) growth response of L. latifolius to inoculation with two types of fungi; (3) structure of root colonizations of Pinus and Lupinus by Phialocephala fortinii, a septate endophytic fungus of lupine;...
Resource Type:: Dissertation
Full Text:: in the Pacific Northwest AN ABSTRACT OF THE THESIS OF Thomas E. O'Dell for the degree of Doctor

Biosystematic studies of the Mimulus moschatus complex in the Pacific Northwest

Creator:: Meinke, Robert James
Abstract:: Populations of an unknown species of Mimulus, herein described as Mimulus hymenophyllus Meinke, were located and studied near Horse Creek, a tributary of the Snake River in eastern Wallowa County, Oregon. The new species is differentiated from its apparent closest relative, Mimulus jungermannioides Suksd., by an annual habit, long petioles,...
Resource Type:: Masters Thesis
Full Text:: the Pacific Northwest AN ABSTRACT OF THE THESIS OF Robert James Meinke for the degree of Master of

Description of the plant communities and succession of the Oregon coast grasslands

Creator:: Ripley, James Douglas
Abstract:: In an effort to describe the plant communities and succession of the Oregon coastal grasslands, vegetation and environmental data were collected from 75 stands at 24 separate locations ranging from Cape Falcon in Tillamook County to Cape Ferrelo in Curry County. The vegetation data consisted of cover and frequency values...
Resource Type:: Dissertation
Full Text:: Oregon Coastal Grasslands AN ABSTRACT OF THE THESIS OF James Douglas Ripley for the degree of Doctor

The effects of a mutation within vitamin E biosynthesis upon the development and function of the photosynthetic apparatus

Creator:: Sicher, Richard Charles
Abstract:: A new photosystem-II mutant of the green alga Scenedesmus obliquus D₃, strain PS-28, has been shown to lack a-tocopherol (vitamin E). The photosynthetic activity of dark grown samples of PS-28 is about 20% of the wild-type control. Culturing the mutant at low light intentisites (10⁴ ergs/sec-cm ²) stimulates photosynthetic activity...
Resource Type:: Dissertation
Full Text:: The effects of a mutation within vitamin E biosynthesis

Spatial and chronological patterns of Purshia tridentata as influenced by Pinus ponderosa overstory

Creator:: Sherman, Robert James
Abstract:: Twelve sites of uniform topography and soils were selected in the Pinus ponderosa/Purshia tridentata/Festuca idahoensis Association. These sites were located in the rain shadow on the east flank of the Oregon Cascades. A fire history in the form of fire scars on ponderosa pine was available for nine of these...
Resource Type:: Masters Thesis
Full Text:: Influenced By Pinus Ponderosa Overstory AN ABSTRACT OF THE THESIS OF ROBERT JAMES SHERMAN for the M. S

The mycorrhizal associations of western hemlock

Creator:: Kropp, Bradley Ray
Abstract:: Two objectives of this research were to identify fungi which are mycorrhizal with western hemlock and to examine the ecology of hemlock mycorrhizal fungi indigenous to outplanting sites. Another objective was to evaluate the effectiveness of mycorrhizal inoculation in improving the performance of outplanted hemlock seedlings. A list of over...
Resource Type:: Dissertation
Full Text:: approved: Dr. James M. Trappe Two objectives of this research were to identify fungi which are

The sequestrate relatives of Russula in Australia and New Zealand

Creator:: Lebel, Teresa
Resource Type:: Dissertation
Full Text:: Australia and New Zealand. Abstract approved: James M. Trappe The sequestrate ectomycorrhizal fungi of

Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California

Creator:: Parke, Jennifer Lee
Resource Type:: Dissertation
Full Text:: thank Dr. James M. Trappe for the opportunity to study the ecology of native mycorrhizal fungi, and Mr

Factors affecting germination of endomycorrhizal spores

Creator:: Daniels, Barbara Ann
Abstract:: Four isolates of Glomus mosseae, collected from diverse geographic locations, were pot cultured on varied host plants or stored in the same soil as collected. Spores of three isolates failed to germinate on any of five agar media while the fourth germinated well on all media. Lack of germination on...
Resource Type:: Dissertation
Full Text:: privacy Jame 41,/ 1'4r appe Abstract approved: \-4 Four isolates of Glomus mosseae, collected from

Mycorrhizal fungi and their relationship to plant succession in subalpine habitats

Creator:: Cazares, Efren
Resource Type:: Dissertation
Full Text:: RELATIONSHIP TO PLANT SUCCESSION IN SUBALPINE HABITATS Abstract approved: Dr. James M. Trappe These studies

Soil fungal hyphal dynamics and seasonal hypogeous sporocarp production in western Oregon Douglas-fir forests

Creator:: Hunt, Gary, 1945-
Abstract:: Total length and biomass of fungal mycelium in the soil of a young Douglas-fir stand in the central Oregon Coast Range were estimated over 27 months with the agar-film technique. In a second study, phenology and taxonomy of hypogeous (belowground) sporocarps were studied over 32 months in a nearby, young...
Resource Type:: Dissertation
Full Text:: FORESTS Abstract approved: Redacted for privacy Dr. James M. Trappe Total length and biomass of fungal

Taxomony and mycorrhizal ecology of the desert truffles in the genus Terfezia

Creator:: Alsheikh, Abdulmagid M.
Abstract:: Mycorrhizal fungi in arid and semiarid rangelands have received little study in southwest Asia and north Africa, although they are important in food production and rangeland productivity. The desert truffles of the genera Terfezia and Tirmania form fruiting-bodies and mycorrhizae with rangeland plants. This thesis treats the taxonomy and the...
Resource Type:: Dissertation
Full Text:: Ecology of the Desert Truffles in the Genus Terfezia. Abstract approved: James M. Trappe

Nursery, cold storage, and field studies on western conifers inoculated with spores of Pisolithus tinctorius

Creator:: Alvarez, Isabel Fernandez
Abstract:: Inoculations of white fir, Shasta red fir, Douglas fir and ponderosa pine with Pisolithus tinctorius spores when outplanted failed to produce P. tinctorius mycorrhizae at the end of the first growing season. In the third year a few P. tinctorius mycorrhizae were formed on white fir. Inoculations reduced seedling survival...
Resource Type:: Dissertation
Full Text:: PISOLITAIUS TINCTORIUS Abstract approved: Redacted for Privacy v -4 ..1\1s*--1 Dr. James M. Trappe

The genus Leucogaster (Basidiomycetes, Leucogastraceae)

Creator:: Fogel, Robert Dale
Abstract:: Three provisional species are described as new: Leucogaster couchii, L. gelatinosus, and L. microsporus. Leucophlebs candida is transferred to Leucogastef, completing the transfer of all Leucophlebs species to Leucogaster. L. columellatus is transferred to Sclerogaster. L. longisterigmatus is synonymized with L. rubescens, L. foveolatus with L. odoratus, and L. fulvimaculatus...
Resource Type:: Dissertation
Full Text:: thanks is extended to Dr. James M. Trappe for his infinIte patience, understanding, and guidance during

Patterns of ectomycorrhizal host-fungus specificity in the Pacific Northwest

Creator:: Molina, R.
Abstract:: Results from approximately 400 fungus-host pure culture inoculations indicate that specificity of ectomycorrhizal associations is a complex phenomenon and cannot be based solely on field observations of sporocarp-host associations. Of the numerous sporocarp-host specific fungi tested, most formed ectomycorrhizae with one or more unexpected, non-associated hosts. These results conclusively demonstrate...
Resource Type:: Dissertation
Full Text:: HOST-FUNGUS SPECIFICITY IN THE PACIFIC NORTHWEST Redacted for Privacy Abstract approved: Dr. James M

The role of ethylene in ectomycorrhiza formation and Fusarium infection of Douglas fir roots

Creator:: Graham, James Herbert
Abstract:: The ectomycorrhizal fungi Cenococcum geophilum, Hebeloma crustuliniforme and Laccaria laccata produced ethylene in vitro in modified Melin-Norkrans liquid medium only if amended with 2.5 to 10 mM methionine; Pisolithus tinctorius failed to produce ethylene unless the cultures were renewed with fresh methionine-amended medium prior to ethylene assay. An additional 19...
Resource Type:: Dissertation
Full Text:: Fusarium Infection of Douglas-Fir Roots AN ABSTRACT OF THE THESIS OF James Herbert Graham, Jr. for the

Taxonomy of desert truffles : the genera Phaeangium and Tirmania

Creator:: Alsheikh, Abdulmagid M.
Abstract:: Mycorrhizal fungi are important in food production of arid lands. The desert truffles not only form a symbiotic association with range plants but also form fruiting bodies which are both prized as food and nutritious. The taxonomy and ecology of two genera of desert truffles are treated in this thesis....
Resource Type:: Masters Thesis
Full Text:: Phaeangium and Tirmania Abstract approved: Redacted for Privacy 1 Dr. James M. Trappe Mycorrhizal fungi

The identification and quantification of Pyrenochaeta terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots

Creator:: Flota, James Ernest
Resource Type:: Masters Thesis
Full Text:: THESIS OF James Ernest Flota for the degree of Master of Science in Botany and Plant Pathology

Comparative gibberellin relationships in tall and dwarf peas (Pisum sativum L.)

Creator:: Anderson, James David
Abstract:: Experiments were performed to determine whether a direct correlation exists between the growth rates of tall and dwarf peas grown either in the light or in the dark and endogenous gibberellin (GA) content. Three separate but related experimental approaches were utilized: (1) the determination of possible qualitative and /or quantitative...
Resource Type:: Dissertation
Full Text:: peas (Pisum sativum L.) AN ABSTRACT OF THE THESIS OF JAMES DAVID ANDERSON in for the PH, D

Below ground biology of Botrychium pumicola (Ophioglossaceae)

Creator:: Camacho, Francisco J.
Resource Type:: Dissertation
Full Text:: pumicola (Ophioglossaceae). Abstract Approved: __ James M. Trappe Botrychium pumicola Coville is a

Cytotaxonomic studies in the Artemisia ludoviciana polyploid complex of the Pacific Northwest

Creator:: Estes, James R.
Abstract:: The Artemisia ludoviciana polyploid complex is a highly polymorphic assembledge of eight taxa in the Pacific Northwest, with a chromosome base number of x=9. A cytogenetic analysis of this complex was carried out to determine the sources of its variation, the types of polyploidy present, and the genetic processes active...
Resource Type:: Dissertation
Full Text:: Polyploid Complex of the Pacific Northwest AN ABSTRACT OF THE THESIS OF James Russell Estes for the

Morphology, ultrastructure and mating of sporidia of a wheat-bunt fungus, Tilletia caries (DC.) Tul.

Creator:: Kollmorgen, James Frederick
Abstract:: The teliospore of Tilletia caries germinates to produce a promycelium with a whorl of primary sporidia at its tip. The time between emergence of the promycelium and the development of primary sporidia averaged 2.3 h. Fusion between compatible sporidia occurred within an additional 3.8 h. Primary sporidia appeared to be...
Resource Type:: Dissertation
Full Text:: wheat-bunt fungus, Tilletia caries (DC.) Tul. AN ABSTRACT OF THE THESIS OF James Frederick

The use of flowering crab apples for the detection of latent viruses in apples

Creator:: Reynolds, James Edward
Abstract:: Recent investigations indicate that several latent viruses of apples exist in common commercial apple stocks, but these viruses and their relationships are incompletely understood. This thesis describes investigations of crab apples as indicators of latent viruses of apples. Eighty-eight varieties and species of crab apples were tested as indicators of...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF JAMES EDWARD REYNOLDS for --tNa'.El- THE

Investigation of the oxidizing side of photosystem II through mutant analysis

Creator:: Metz, James George
Resource Type:: Dissertation
Full Text:: distributed communication networks AN ABSTRACT OF THE THESIS OF James George Metz for the degree of Doctor

Potential susceptibility of tanoak associated and rare ericaceous plant species of southwestern Oregon to Phytophthora ramorum

Creator:: Zanzot, James W.
Abstract:: The sudden oak death pathogen, Phytophthora ramorum, is present in southwestern Oregon, and while an eradication effort is underway, the potential impact of the polyphagous pathogen on surrounding vegetation is unknown. Plant communities in the area are substantially different from those affected in California, although tanoak (Lithocarpus densiflorus), evergreen huckleberry...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF James W. Zanzot for the degree of

Decay caused by infection of Fomes cajanderi Karst : in top-broken, young-growth Douglas-fir trees

Creator:: Cahill, James M.
Abstract:: A glaze storm of exceptional severity was seen in the Corvallis area, January, 1942. The weight of ice that accumulated in the crowns of young-growth Douglas-fir trees caused widespread top breakage in many stands lying in the broad path of this storm. Early research on this phenomenon showed the majority...
Resource Type:: Masters Thesis
Full Text:: top-broken, young-growth Douglas-fir trees ABSTRACT OF THE THESIS OF James Michael Cahill for the

Systematic and reproductive studies of Mimulus (Scrophulariaceae) in the Pacific Northwest : implications for conservation biology

Creator:: Meinke, Robert James
Abstract:: The Mimulus washingtonensis complex is a group of morphologically similar species centered in the Pacific Northwest. All are rare, and most are under consideration for listing as endangered. Morphometric and pollination data were used in developing a revised taxonomy for the group. Five species and two varieties are recognized. Mimulus...
Resource Type:: Dissertation
Full Text:: Robert James Meinke for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on

Generation of full-length cDNA clone and functional analysis of leader proteases of grapevine leafroll-associated virus-2

Creator:: Liu, Yu-Ping
Abstract:: Papain-like leader proteases are found in diverse families of human, animal, plant, and fungal positive-strand RNA viruses. In addition to autocatalytic processing, these proteases play a variety of roles in the virus life cycle. In particular, the leader protease (L-Pro) of a prototype member of the Closterovirus genus, Beet yellows...
Resource Type:: Dissertation
Full Text:: members, Dr. Carol Mallory-Smith, Dr. James C. Carrington, Dr. John E. Fowler, Dr. Robert R. Martin, and

Influence of atmospheric humidity and free water on germination and germ tube growth of Botrytis cinerea Pers.

Creator:: Carre, Deborah Danielle
Abstract:: The influence of atmospheric humidity and free water on germination and germ tube growth of Botrytis cinerea Pers. ex Fr. was studied. Relative humidities (RH) were maintained inside insulated humidity chambers with sulfuric acid solutions of the appropriate concentrations. Insulation was necessary to reduce the incidence of condensation caused by...
Resource Type:: Masters Thesis
Full Text:: Drs. James L. Green and Tom Allen for editing my the'sis. A special thank you is extended to Dr

Genome Organization in the Ectomycorrhizal Truffle Rhizopogon vesiculosus

Creator:: Lu, Dabao Sun
Abstract:: Rhizopogon vesiculosus is a common ectomycorrhizal (EM) symbiont of Pseudotusga menziesii (Douglas-fir) in the coast range of the Pacific Northwest. The species has been studied for its systematics, genet size, population structure, and competitive ability in several field and experimental studies. This thesis seeks to provide a more thorough characterization...
Resource Type:: Masters Thesis
Full Text:: , and the remainder heterothallic (James 2007). Within heterothallic basidiomycetes two distinct

Evidence that the Potyvirus P1 Proteinase Functions in trans as an Accessory Factor for Genome Amplification

Creator:: Verchot, Jeanmarie and Carrington, James C.
Abstract:: The tobacco etch potyvirus (TEV) polyprotein is proteolytically processed by three viral proteinases (NIa, HC-Pro, and P1). While the NIa and HC-Pro proteinases each provide multiple functions essential for viral infectivity, the role of the P1 proteinase beyond its autoproteolytic activity is understood poorly. To determine if P1 is necessary...
Resource Type:: Article
Full Text:: Functions in trans as an Accessory Factor for Genome Amplification JEANMARIE VERCHOT AND JAMES C

Debilitation of Plant Potyvirus Infectivity by P1 Proteinase-Inactivating Mutations and Restoration by Second-Site Modifications

Creator:: Verchot, Jeanmarie and Carrington, James C.
Abstract:: Tobacco etch virus (TEV) encodes three proteinases that catalyze processing of the genome-encoded polyprotein. The P1 proteinase originates from the N terminus of the polyprotein and catalyzes proteolysis between itself and the helper component proteinase (HC-Pro). Mutations resulting in substitution of a single amino acid, small insertions, or deletions were...
Resource Type:: Article
Full Text:: VERCHOT AND JAMES C. CARRINGTON* Department of Biology, Texas A&M University, College Station, Texas

The Influence of Nitrogen Fertility on Hop Quality, Pest Management, and the Stability of Biological Control

Creator:: Iskra, Anne E.
Abstract:: A multi-year field study was conducted in Oregon and Washington to evaluate the influence of nitrogen fertilization rate and timing on cone quality, nitrate accumulation in cones, severity of powdery mildew (caused by Podosphaera macularis), arthropod pests, and the stability of conservation biological control of the twospotted spider mite (Tetranychus...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Anne E. Iskra for the degree of Master of Science in Botany and Plant Pathology presented

Morphological and cytological variation in Trillium albidum Freeman (Liliaceae)

Creator:: Bledsoe, Karen E.
Abstract:: This work was performed on Trillium albidum Freeman (Liliaceae), to clarify the pattern of morphological variation between the small-flowered populations at the northern limit of its range ( T. parviflorum Soukup) and the larger-flowered populations from southern Oregon and northern California. It was hypothesized that only a single species of...
Resource Type:: Masters Thesis
Full Text:: albidum Freeman (Liliaceae) AN ABSTRACT OF THE THESIS OF Karen E. Bledsoe for the degree of Master of

Stimulation of mycelial growth of Endothia parasitica by specific heavy metals that detoxify accumulated oxalate

Creator:: Englander, Carol Marcus
Abstract:: Mycelial growth of Endothia parasitica was stimulated by relatively high concentrations of CuSO₄ in potato dextrose agar medium (PDA). Stimulation of E. parasitica by the high levels of CuSO₄ and the relatively poor growth of this fungus on standard culture media suggested that stimulation might be due to interaction of...
Resource Type:: Masters Thesis
Full Text:: OXALATE Abstract approved: Redacted for Privacy M. E. Corden Mycelial growth of Endothia parasitica was

Fungitoxicity of sodium n-methyldithio-carbamate (Vapam) and its decomposition products

Creator:: Elson, Joseph Earl
Abstract:: An assay for fungicidal activity of sodium N-methyldithiocarbamate (Na-MDC) and its decomposition products was developed in which there was a minimum influence due to the widely varying physical properties of the compounds (i.e. vapor pressure and water solubility). Decomposition of the toxicant during the tests was measured and held to...
Resource Type:: Masters Thesis
Full Text:: Phytopathology 53 :1138. 1963. 4. Dimond, Albert E. , John W. Heuberger and James G. Horsfall. A water soluble

Dry coniferous forests in the Western Oregon Cascades

Creator:: Means, Joseph E.
Abstract:: Pseudotsuga menziesii dominates the forests of the Pacific Northwest. But though it is dominat, Tsuaa heteroohylla or Abies amabilis is usually climax. Many researchers have studied Pseudotsuga on the widespread mesic sites where it is seral, but few have examined the relatively rare ecosystems in which Pseudotsuga or its associate...
Resource Type:: Dissertation
Full Text:: districts, and the H.J. Andrew Experimental Ecological Reserve (HJA) in Oregon. The six mile by six mil-e

An analysis of montane forest vegetation on the east flank of the central Oregon Cascades

Creator:: West, Neil E.
Abstract:: Montane forest vegetation as it occurs on the east flank of the central Oregon Cascades has provided excellent conditions for a "natural experiment" in the use of various methodologies in studying vegetational distribution. This "experiment" has reflected on some theory and practice for the discipline of plant synecology. Detailed descriptions,...
Resource Type:: Dissertation
Full Text:: ) Circle denotes study area 6 "0 w t` e.....; ti# 1« ," : 1 3 7 3 -'. "EPSON ..a

Contracting nucleolar vacuoles in somatic tobacco cells growing in microcultures

Creator:: Johnson, John Morris
Abstract:: Contracting nucleolar vacuoles are a general and consistent feature of somatic tobacco cells growing in microcultures. Nucleolar vacuoles were studied in cells from callus tissues of two single-cell clones, H-196 and H-239, of hybrid tobacco (Nicotiana tabacum X N. glutinosa). Vacuoles periodically contracted either completely or incompletely, apparently releasing a...
Resource Type:: Dissertation
Full Text:: Cha' man of epart- ent of Botany can o ra ua e c oo e ACKNOWLEDGMENTS The writer wishes to

Complementation of tobacco etch potyvirus mutants by active RNA polymerase expressed in transgenic cells

Creator:: Li, Xiao Hua and Carrington, James C.
Abstract:: A genetic complementation system was developed in which tobacco etch virus (TEV) polymerase (NIb)- expressing transgenic plants or protoplasts were inoculated with NIb-defective TEV mutants. A β-glucuronidase (GUS) reporter gene integrated into the genomes of parental and four mutant viruses was used to assay RNA amplification. Two mutants (termed VNN...
Resource Type:: Article
Full Text:: transgenic cells XIAo HUA Li AND JAMES C. CARRINGTON* Department of Biology, Texas A&M University, College

Cap-Independent Enhancement of Translation by a Plant Potyvirus 5' Nontranslated Region

Creator:: Carrington, James C. and Freed, Deon D.
Abstract:: The RNA genome of tobacco etch virus (TEV), a plant potyvirus, functions as an mRNA for synthesis of a 346-kilodalton polyprotein that undergoes extensive proteolytic processing. The RNA lacks a normal 5' cap structure at its terminus, which suggests that the mechanism of translational initiation differs from that of a...
Resource Type:: Article
Full Text:: Translation by a Plant Potyvirus 5' Nontranslated Region JAMES C. CARRINGTON* AND DEON D. FREED Department of

Reconsidering Relationships among Stem and Crown Group Pinaceae: Oldest Record of the Genus Pinus from the Early Cretaceous of Yorkshire, United Kingdom

Creator:: Ryberg, Patricia E., Rothwell, Gar W., Stockey, Ruth A., Hilton, Jason, Mapes, Gene, and Riding, James B.
Abstract:: This study describes a specimen that extends the oldest fossil evidence of Pinus L. to the Early Cretaceous Wealden Formation of Yorkshire, UK (131-129 million years ago), and prompts a critical reevaluation of criteria that are employed to identify crown group genera of Pinaceae from anatomically preserved seed cones. The...
Resource Type:: Article
Full Text:: CRETACEOUS OF YORKSHIRE, UNITED KINGDOM Patricia E. Ryberg,* Gar W. Rothwell,1,y,z Ruth A. Stockey,y,§ Jason

Decadal Changes in Lichen and Vegetation Communities in Relation to Metal Deposition and Climate in Northern Alaska

Creator:: Di Meglio, Elisa B.
Abstract:: The Red Dog Mine transports concentrated zinc and lead ore in northwestern Alaska through Cape Krusenstern National monument along a haul road. High metal levels in the moss Hylocomium splendens along the haul road have been attributed to ore dust released during transport. The mine has implemented several pollution abatement...
Resource Type:: Masters Thesis
Full Text:: : ____________________________________________________________________ Bruce McCune Alyssa E. Shiel The Red

Insights into the pathology and epidemiology of Phytophthora ramorum, causal agent of sudden oak death

Creator:: Daniels, Hazel A.
Abstract:: Sudden oak death is caused by the clonally reproducing generalist oomycete Phytophthora ramorum. The pathogen can infect more than 130 different plant hosts including Quercus spp., Larix kaempferi, and Notholithocarpus densiflorus, as well as common nursery genera such as Rhododendron and Camelia, where it causes symptoms ranging from bleeding cankers...
Resource Type:: Dissertation
Full Text:: soil bag containing 200- 500 mL deionized water and left for 48 hours (E). The bait bag is then

Systematics, phylogeny, and biogeography of the hysterangiales and related taxa (Phallomycetidae, Homobasidiomycetes)

Creator:: Hosaka, Kentaro
Abstract:: Monophyly of the gomphoid-phalloid clade was confirmed based on multigene phylogenetic analyses. Four major subclades (Hysterangiales, Geastrales, Gomphales and Phallales) were also demonstrated to be monophyletic. The interrelationships among the subclades were, however, not resolved, and alternative topologies could not be rejected statistically. Nonetheless, most analyses showed that the Hysterangiales...
Resource Type:: Dissertation
Full Text:: . Giachini, Eduardo Nouhra, Michael A. Castellano, James M. Trappe, Ross E. Beever, and JózsefGemi were

Phylogeography and Evolution of Effector Genes in Phytophthora Species

Creator:: Shakya, Shankar K.
Abstract:: Plant pathogens in the genus Phytophthora are known to cause disease on field crops, nursery plants, and forest trees. The best known example probably is Phytophthora infestans, which triggered the infamous Irish potato famine. Other important Phytophthora species include: P. ramorum (sudden oak death pathogen), P. sojae (soybean root rot...
Resource Type:: Dissertation

Distributional patterns and taxonomic structure of diatom assemblages in Netarts Bay, Oregon

Creator:: Whiting, Mark Carlos
Abstract:: Epiphytic, planktonic and benthic diatom assemblages were investigated in Netarts Bay, Oregon. Samples were collected for a one-year period from February 1980 to March 1981. A planktonic flora was observed only during periods of offshore enrichment when marine neritic species were abundant and were transported into the bay by tidal...
Resource Type:: Dissertation
Full Text:: members of my original committee, Dr. David Willis, Dr. James Hall and Dr. Jack Lyford and to Dr. Bruce

Port-Orford-cedar and Phytophthora lateralis : grafting and heritability of resistance in the host, and variation in the pathogen

Creator:: McWilliams, Michael G.
Abstract:: Port-Orford-cedar (Chamaecyparis lawsoniana) is a forest tree native to a small area of Oregon and California. A root disease caused by Phytophthora lateralis causes widespread mortality of Port-Orford-cedar. This dissertation examines three important elements of the Port-Orford-cedar P. lateralis pathosystem related to breeding for disease resistance: use of resistant rootstocks...
Resource Type:: Dissertation
Full Text:: time off to complete research and writing. My committee members Don Zobel, Don Copes, James Trappe

Genetic and Functional Diversification of Small RNA Pathways in Plants

Creator:: Xie, Zhixin, Johansen, Lisa K., Gustafan, Adam M., Kasschau, Kristin D., Lellis, Andrew D., Zilberman, Daniel, Jacobsen, Steven E., and Carrington, James C.
Abstract:: Multicellular eukaryotes produce small RNA molecules (approximately 21–24 nucleotides) of two general types, microRNA (miRNA) and short interfering RNA (siRNA). They collectively function as sequence-specific guides to silence or regulate genes, transposons, and viruses and to modify chromatin and genome structure. Formation or activity of small RNAs requires factors belonging...
Resource Type:: Article
Full Text:: . Kasschau 1 , Andrew D. Lellis 1 , Daniel Zilberman 2 , Steven E. Jacobsen 2,3 , James C. Carrington 1

The ERI-6/7 Helicase Acts at the First Stage of an siRNA Amplification Pathway That Targets Recent Gene Duplications

Creator:: Fischer, Sylvia E. J., Montgomery, Taiowa A., Zhang, Chi, Fahlgren, Noah, Breen, Peter C., Hwang, Alexia, Sullivan, Christopher M., Carrington, James C., and Ruvkun, Gary
Abstract:: Endogenous small interfering RNAs (siRNAs) are a class of naturally occuring regulatory RNAs found in fungi, plants, and animals. Some endogenous siRNAs are required to silence transposons or function in chromosome segregation; however, the specific roles of most endogenous siRNAs are unclear. The helicase gene eri-6/7 was identified in the...
Resource Type:: Article
Full Text:: of an siRNA Amplification Pathway That Targets Recent Gene Duplications Sylvia E. J. Fischer1, Taiowa

Autocatalytic Processing of the Potyvirus Helper Component Proteinase in Escherichia coli and In Vitro

Creator:: Carrington, James C., Freed, Deon D., and Sanders, Tatia C.
Abstract:: The virus-encoded proteins of tobacco etch virus (TEV), a plant potyvirus, arise by proteolytic processing of a large polyprotein precursor. The TEV genome codes for two proteinases, a 49-kilodalton proteinase and helper component proteinase (HC-Pro), which cleave the polyprotein at specific sites. The only known cleavage event catalyzed by HC-Pro...
Resource Type:: Article
Full Text:: Proteinase in Escherichia coli and In Vitro JAMES C. CARRINGTON,* DEON D. FREED, AND TATIA C. SANDERS

Analysis of the VPg-Proteinase (NIa) Encoded by Tobacco Etch Potyvirus: Effects of Mutations on Subcellular Transport, Proteolytic Processing, and Genome Amplification

Creator:: Schadd, Mary C., Haldeman-Chahill, Ruth, Cronin, Stephen, and Carrington, James C.
Abstract:: A mutational analysis was conducted to investigate the functions of the tobacco etch potyvirus VPgproteinase (NIa) protein in vivo. The NIa N-terminal domain contains the VPg attachment site, whereas the C-terminal domain contains a picornavirus 3C-like proteinase. Cleavage at an internal site separating the two domains occurs in a subset...
Resource Type:: Article
Full Text:: , and Genome Amplification MARY C. SCHAAD, RUTH HALDEMAN-CAHILL, STEPHEN CRONIN, AND JAMES C

The Personal Sequence Database: a suite of tools to create and maintain web-accessible sequence databases

Creator:: Givan, Scott A., Sullivan, Christopher M., and Carrington, James C.
Abstract:: Background: Large molecular sequence databases are fundamental resources for modern bioscientists. Whether for project-specific purposes or sharing data with colleagues, it is often advantageous to maintain smaller sequence databases. However, this is usually not an easy task for the average bench scientist. Results: We present the Personal Sequence Database (PSD),...
Resource Type:: Article
Full Text:: databases Scott A Givan*1,2, Christopher M Sullivan1,2 and James C Carrington1,2 Address: 1Center for

Impacts of ponderosa pine forest restoration treatments on the ectomycorrhizal fungal community and fine root biomass in the Blue Mountains of Oregon

Creator:: Smith, Jane E. (Jane Elizabeth)
Abstract:: Before the arrival of Euro-Americans, the inland Pacific Northwest was settled by native people whose frequent intentional burning of the landscape promoted open stands dominated by large fire-resistant ponderosa pine. Fire suppression for nearly a century, livestock grazing, and logging of the largest trees has resulted in forests characterized by...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Jane E. Smith for the degree

Community Ecology and Population Genomics of Rhizopogon in the Madrean Sky Island Archipelago

Creator:: Piña Páez, Carolina G.
Abstract:: Anthropogenic induced climate change is predicted to alter distribution of existing plant populations. As plants migrate over space and time, populations often fragment and contract, affecting basic elements of population dynamics (e.g., population size, gene flow, genetic diversity, etc.). Little is known, however, how these impacts on plant species will...
Resource Type:: Dissertation
Full Text:: differences defined by a genetic locus involved in mating type (called MAT locus) (James, 2015). Most sexual

Role of inoculum sources of Botrytis cinerea in the epidemiology of gray mold of snap beans

Creator:: Johnson, Kenneth Bjorn
Abstract:: Spore dispersal gradients and pod disease gradients from point inoculum sources of Botrytis cinerea were measured over time in two snap bean field experiments. Laboratory grown inoculum was placed at ground level in a 30 x 30 cm square at bloom initiation and removed at full bloom. Dispersal of inoculum,...
Resource Type:: Masters Thesis
Full Text:: my commitee members, Drs. C. E. Horner, N. W. Christensen, and R. G. Petersen for critically

Serological and molecular approaches for distinguishing bean common mosaic and bean common mosaic necrosis potyviruses and their respective pathogroups

Creator:: Xu, Ling, 1963-
Abstract:: Polyclonal antisera were raised against isolates of bean common mosaic virus (BCMV) and bean common mosaic necrosis virus (BCMNV) using conventional serological methods. Infected tissues containing, respectively, 22 recognized BCMV and BCMNV isolates were tested against the two antisera by antigen-coated plate (ACP) ELISA and double antibody sandwich (DAS) ELISA....
Resource Type:: Masters Thesis
Full Text:: Ms Karen E. Keller, Dr. Paul D. Kohnen and Mr. Daniel L. Moore, for their various technical

Distinct Argonaute-mediated 22G-RNA pathways direct genome surveillance in the C. elegans germline

Creator:: Gu, Weifeng, Shirayama, Masaki, Conte Jr., Darryl, Vasale, Jessica, Batista, Pedro J., Claycomb, Julie M., Moresco, James J., Youngman, Elaine, Keys, Jennifer, Stoltz, Matthew J., Chen, Chun-Cheih G., Chaves, Daniel A., Duan, Shenghua E., Kasschau, Krisitin D., Fahlgren, Noah, Yates III, John R., Mitani, Shohei, Carrington, James C., and Mello, Craig C.
Abstract:: Endogenous small RNAs (endo-siRNAs) interact with Argonaute (AGO) proteins to mediate sequence-specific regulation of diverse biological processes. Here, we combine deep-sequencing and genetic approaches to explore the biogenesis and function of endo-siRNAs in C. elegans. We describe conditional alleles of the dicer-related helicase, drh-3, that abrogate both RNA interference and...
Resource Type:: Article
Full Text:: Vasale1, Pedro J. Batista1,3, Julie M. Claycomb1, James J. Moresco4, Elaine Youngman1, Jennifer Keys1

Parmelina yalungana resurrected and reported from Alaska, China and Russia

Creator:: Nelson, Peter R., Kepler, Ryan, Walton, James, Fankhauser, John, Nelson, Laura, and Song, Wang Li
Abstract:: Parmelina quercina is a well-studied foliose macro-lichen found on rocks and trees in the Northern Hemisphere. Recent studies support multiple species within P. quercina based on material from Europe, North America and western Asia. The identities of Parmelina quercina s.lat. reported from eastern Asia and Alaska remain unknown. We compared...
Resource Type:: Article
Full Text:: , James Walton, John Fankhauser, Laura Nelson, and Wang Li Song Source: The Bryologist, 115(4):557-565

RNA-Seq analysis of early infected potato leaves by potato virus Y in resistant and susceptible potato varieties

Creator:: Goyer, Aymeric, Hamlin, Launa, Crosslin, James M., Buchanan, Alex, and Chang, Jeff H.
Abstract:: Background Potato Virus Y (PVY) is one of the most important plant viruses affecting potato production. The interactions between potato and PVY are complex and the outcome of the interactions depends on the potato genotype, the PVY strain, and the environmental conditions. A potato cultivar can induce resistance to a...
Resource Type:: Article
Full Text:: Aymeric Goyer1,2,3*, Launa Hamlin4, James M. Crosslin4, Alex Buchanan1 and Jeff H. Chang1,3 Abstract

Phytophthora ramorum colonizes tanoak xylem and is associated with reduced stem water transport

Creator:: Parke, J. L., Oh, E., Voelker, S., Hansen, E. M., Buckles, G., and Lachenbruch, Barbara
Abstract:: Isolation, detection with diagnostic polymerase chain reaction (PCR), and microscopy demonstrated the presence of Phytophthora ramorum in the sapwood of mature, naturally infected tanoak (Lithocarpus densiflorus) trees. The pathogen was strongly associated with discolored sapwood (P < 0.001), and was recovered or detected from 83% of discolored sapwood tissue samples....
Resource Type:: Article
Full Text:: Associated with Reduced Stem Water Transport J. L. Parke, E. Oh, S. Voelker, E. M. Hansen, G. Buckles, and

Population Density and Phenology of Tetranychus urticae (Acari: Tetranychidae) in Hop is Linked to the Timing of Sulfur Applications

Creator:: Woods, J. L., Dreves, A. J., Fisher, Glenn C., James, David G., Wright, Larry C., and Gent, D. H.
Abstract:: The twospotted spider mite, Tetranychus urticae Koch, is a worldwide pest of numerous agronomic and horticultural plants. Sulfur fungicides are known to induce outbreaks of this pest on several crops, although mechanisms associated with sulfur-induced mite outbreaks are largely unknown. Studies were conducted during 2007–2009 in Oregon and Washington hop...
Resource Type:: Article
Full Text:: . DREVES,1 G. C. FISHER,1 D. G. JAMES,2 L. C. WRIGHT,2 AND D. H. GENT3 Environ. Entomol. 41(3): 621Ð635

Identification and Characterization of Human Cytomegalovirus-Encoded MicroRNAs

Creator:: Grey, Finn, Antoniewicz, Andy, Allen, Edwards, Saugstad, Julie, McShea, Andy, Carrington, James C., and Nelson, Jay
Abstract:: MicroRNAs (miRNAs) are an extensive class of noncoding genes that regulate gene expression through posttranscriptional repression. Given the potential for large viral genomes to encode these transcripts, we examined the human cytomegalovirus AD169 genome for miRNAs using a bioinformatics approach. We identified 406 potential stem-loops, of which 110 were conserved...
Resource Type:: Article
Full Text:: -Encoded MicroRNAs Finn Grey,1* Andy Antoniewicz,2 Edwards Allen,4 Julie Saugstad,3 Andy McShea,2 James C

Identification of MIR390a precursor processing defective mutants in Arabidopsis by direct genome sequencing

Creator:: Cuperus, Josh T., Montgomery, Taiowa A., Fahlgren, Noah, Burke, Russell T., Townsend, Tiffany, Sullivan, Christopher M., and Carrington, James C.
Abstract:: Transacting siRNA (tasiRNA) biogenesis in Arabidopsis is initiated by microRNA (miRNA) –guided cleavage of primary transcripts. In the case of TAS3 tasiRNA formation, ARGONAUTE7 (AGO7)– miR390 complexes interact with primary transcripts at two sites, resulting in recruitment of RNA-DEPENDENT RNA POLYMERASE6 for dsRNA biosynthesis. An extensive screen for Arabidopsis mutants...
Resource Type:: Article
Full Text:: . Montgomerya,b, Noah Fahlgrena,b, Russell T. Burkeb, Tiffany Townsendb, Christopher M. Sullivanb,c, and James C

Host-Specific Involvement of the HC Protein in the Long-Distance Movement of Potyviruses

Creator:: Sáenz, Pilar, Salvador, Beatriz, Simón-Mateo, Carmen, Kasschau, Kristin D., Carrington, James C., and García, Juan Antonio
Abstract:: Plum pox virus (PPV) is a member of the Potyvirus genus that, in nature, infects trees of the Prunus genus. Although PPV infects systemically several species of the Nicotiana genus, such as N. clevelandii and N. benthamiana, and replicates in the inoculated leaves of N. tabacum, it is unable to...
Resource Type:: Article
Full Text:: of Potyviruses Pilar Sáenz,1† Beatriz Salvador,1 Carmen Simón-Mateo,1 Kristin D. Kasschau,2 James C

Genome-Wide Profiling and Analysis of Arabidopsis siRNAs

Creator:: Kasschau, Kristin D., Fahlgren, Noah, Chapman, Elisabeth J., Sullivan, Christopher M., Cumbie, Jason S., Givan, Scott A., and Carrington, James C.
Abstract:: Eukaryotes contain a diversified set of small RNA-guided pathways that control genes, repeated sequences, and viruses at the transcriptional and posttranscriptional levels. Genome-wide profiles and analyses of small RNAs, particularly the large class of 24-nucleotide (nt) short interfering RNAs (siRNAs), were done for wild-type Arabidopsis thaliana and silencing pathway mutants...
Resource Type:: Article
Full Text:: . Sullivan 1,2 , Jason S. Cumbie 1,2 , Scott A. Givan 1,2 , James C. Carrington 1,2* 1 Center for Genome

Formation of Complexes at Plasmodesmata for Potyvirus Intercellular Movement Is Mediated by the Viral Protein P3N-PIPO

Creator:: Wei, Taiyun, Zhang, Changwei, Hong, Jian, Xiong, Ruyi, Kasschau, Krisitin D., Zhou, Xueping, Carrington, James C., and Wang, Aiming
Abstract:: Intercellular transport of viruses through cytoplasmic connections, termed plasmodesmata (PD), is essential for systemic infection in plants by viruses. Previous genetic and ultrastructural data revealed that the potyvirus cyclindrical inclusion (CI) protein is directly involved in cell-to-cell movement, likely through the formation of conical structures anchored to and extended through...
Resource Type:: Article
Full Text:: Zhang1,2,3, Jian Hong4, Ruyi Xiong1, Kristin D. Kasschau5, Xueping Zhou6, James C. Carrington5, Aiming

Genome-wide profiling of Populus small RNAs

Creator:: Klevebring, Daniel, Street, Nathaniel R., Fahlgren, Noah, Kasschau, Krisitin D., Carrington, James C., Lundeberg, Joakim, and Jansson, Stefan
Abstract:: Background: Short RNAs, and in particular microRNAs, are important regulators of gene expression both within defined regulatory pathways and at the epigenetic scale. We investigated the short RNA (sRNA) population (18-24 nt) of the transcriptome of green leaves from the sequenced Populus trichocarpa using a concatenation strategy in combination with...
Resource Type:: Article
Full Text:: , Noah Fahlgren3, Kristin D Kasschau3, James C Carrington3, Joakim Lundeberg1 and Stefan Jansson*2

Virus-Derived Gene Expression and RNA Interference Vector for Grapevine

Creator:: Kurth, Elizabeth G., Peremyslov, Valera V., Prokhnevsky, Alexey I., Kasschau, Kristin D., Miller, Marilyn, Carrington, James C., and Dolja, Valerian V.
Abstract:: The improvement of the agricultural and wine-making qualities of the grapevine (Vitis vinifera) is hampered by adherence to traditional varieties, the recalcitrance of this plant to genetic modifications, and public resistance to genetically modified organism (GMO) technologies. To address these challenges, we developed an RNA virus-based vector for the introduction...
Resource Type:: Article
Full Text:: . Kasschau, Marilyn Miller, James C. Elizabeth G. Kurth, Valera V. Peremyslov, Alexey I. Interference

Finding Our Way through Phenotypes

Creator:: Deans, Andrew R., Lewis, Suzanna E., Huala, Eva, Anzaldo, Salvatore S., Ashburner, Michael, Balhoff, James P., Blackburn, David C., Blake, Judith A., Burleigh, J. Gordon, Chanet, Bruno, Cooper, Lauren D., Courtot, Mélanie, Csösz, Sándor, Cul, Hong, Dahdul, Wasila, Das, Sandip, Dececchi, T. Alexander, Dettal, Agnes, Diogo, Rui, Druzinsky, Robert E., Dumontier, Michel, Franz, Nico M., Friedrich, Frank, Gkoutos, George V., Haendel, Melissa, Harmon, Luke J., Hayamizu, Terry F., He, Yongqun, Hines, Heather M., Ibrahim, Nizar, Jackson, Laura M., Jaiswal, Pankaj, James-Zorn, Christina, Köhler, Sebastian, Lecointre, Guillaume, Lapp, Hilmar, Lawrence, Carolyn J., Le Novère, Nicolas, Lundberg, John G., Macklin, James, Mast, Austin R., Midford, Peter E., Mikó, István, Mungall, Christopher J., Oellrich, Anika, Osumi-Sutherland, David, Parkinson, Helen, Ramírez, Martín J., Richter, Stefan, Robinson, Peter N., Ruttenberg, Alan, Schulz, Katja S., Segerdell, Erik, Seltmann, Katja C., Sharkey, Michael J., Smith, Aaron D., Smith, Barry, Specht, Chelsea D., Squires, R. Burke, Thacker, Robert W., Thessen, Anne, Fernandez-Triana, Jose, Vihinen, Mauno, Vize, Peter D., Vogt, Lars, Wall, Christine E., Walls, Ramona L., Westerfeld, Monte, Wharton, Robert A., Wirkner, Christian S., Woolley, James B., Yoder, Matthew J., Zorn, Aaron M., and Mabee, Paula
Abstract:: Despite a large and multifaceted effort to understand the vast landscape of phenotypic data, their current form inhibits productive data analysis. The lack of a community-wide, consensus-based, human- and machine-interpretable language for describing phenotypes and their genomic and environmental contexts is perhaps the most pressing scientific bottleneck to integration across...
Resource Type:: Article
Full Text:: through Phenotypes Deans, A. R., Lewis, S. E., Huala, E., Anzaldo, S. S., Ashburner, M., et al. (2015

Comparative Genome Structure, Secondary Metabolite, and Effector Coding Capacity across Cochliobolus Pathogens

Creator:: Condon, Bradford J., Leng, Yueqiang, Wu, Dongliang, Bushley, Kathryn E., Ohm, Robin A., Otillar, Robert, Martin, Joel, Schackwitz, Wendy, Grimwood, Jane, MohdZainudin, NurAinIzzati, Xue, Chunsheng, Wang, Rui, Manning, Viola A., Dhillon, Braham, Tu, Zheng Jin, Steffenson, Brian J., Salamov, Asaf, Sun, Hui, Lowry, Steve, LaButti, Kurt, Han, James, Copeland, Alex, Lindquist, Erika, Barry, Kerrie, Schmutz, Jeremy, Baker, Scott E., Ciuffetti, Lynda M., Grigoriev, Igor V., Zhong, Shaobin, and Turgeon, B. Gillian
Abstract:: The genomes of five Cochliobolus heterostrophus strains, two Cochliobolus sativus strains, three additional Cochliobolus species (Cochliobolus victoriae, Cochliobolus carbonum, Cochliobolus miyabeanus), and closely related Setosphaeria turcica were sequenced at the Joint Genome Institute (JGI). The datasets were used to identify SNPs between strains and species, unique genomic regions, core secondary...
Resource Type:: Article
Full Text:: ., Dongliang Wu1., Kathryn E. Bushley3, Robin A. Ohm4, Robert Otillar4, Joel Martin4, Wendy Schackwitz4, Jane

Pathogenicity and Virulence of Pythium Species Obtained from Forest Nursery Soils on Douglas-Fir Seedlings

Creator:: Weiland, Jerry E., Beck, Bryan R., and Davis, Anne
Abstract:: Pythium species are common soilborne oomycetes that occur in forest nursery soils throughout the United States. Numerous species have been described from nursery soils. However, with the exception of P. aphanidermatum, P irregulare, P. sylvaticum, and P ultimum, little is known about the potential for other Pythium species found in...
Resource Type:: Article
Full Text:: E. Weiland, Bryan R. Beck, and Anne Davis, United States Department of Agriculture – Agriculture

Patterns in the occupancy and abundance of the globally rare lichen Erioderma pedicellatum in Denali National Park and Preserve, Alaska

Creator:: Stehn, Sarah E., Nelson, Peter R., Roland, Carl A., and Jones, Jennifer R.
Abstract:: We investigated habitat attributes related to the occupancy of the globally rare and endangered epiphytic lichen, Erioderma pedicellatum, in a newly discovered (2009) population center in Denali National Park and Preserve (DNPP), Alaska. We measured forest, tree and epiphytic lichen community characteristics on eighty-five systematically selected plots in four study...
Resource Type:: Article
Full Text:: lichen Erioderma pedicellatum in Denali National Park and Preserve, Alaska Sarah E. Stehn1,2, Peter R

Particulate optical scattering coefficients along an Atlantic Meridional Transect

Creator:: Dall Olmo, G., Boss, E., Behrenfeld, M.J., and Westberry, T.K.
Abstract:: The particulate optical backscattering coefficient (bbₚ) is a fundamental optical property that allows monitoring of marine suspended particles both in situ and from space. Backscattering measurements in the open ocean are still scarce, however, especially in oligotrophic regions. Consequently, uncertainties remain in bbₚ parameterizations as well as in satellite estimates...
Resource Type:: Article
Full Text:: Atlantic Meridional Transect G. Dall’Olmo,1,∗ E. Boss,2, M.J. Behrenfeld,3 and T.K. Westberry3 1Plymouth

High-Throughput Sequencing of Arabidopsis microRNAs : Evidence for Frequent Birth and Death of MIRNA Genes

Creator:: Fahlgren, Noah, Howell, Miya D., Kasschau, Kristin D., Sullivan, Christopher M., Cumbie, Jason S., Givan, Scott A., Law, Theresa F., Grant, Sarah R., Dangl, Jeffrey L., and Carrington, James C.
Abstract:: In plants, microRNAs (miRNAs) comprise one of two classes of small RNAs that function primarily as negative regulators at the posttranscriptional level. Several MIRNA genes in the plant kingdom are ancient, with conservation extending between angiosperms and the mosses, whereas many others are more recently evolved. Here, we use deep...
Resource Type:: Article
Full Text:: . Law3, Sarah R. Grant3, Jeffery L. Dangl3, James C. Carrington1* 1 Center for Genome Research and

Genetic framework for flowering-time regulation by ambient temperature-responsive miRNAs in Arabidopsis

Creator:: Lee, Hanna, Yoo, Seong Jeon, Lee, Jeong Hwan, Kim, Wanhui, Yoo, Seung Kwan, Fitzgerald, Heather, Carrington, James C., and Ahn, Ji Hoon
Abstract:: Flowering is the primary trait affected by ambient temperature changes. Plant microRNAs (miRNAs) are small non-coding RNAs playing an important regulatory role in plant development. In this study, to elucidate the mechanism of flowering-time regulation by small RNAs, we identified six ambient temperature-responsive miRNAs (miR156, miR163, miR169, miR172, miR398 and...
Resource Type:: Article
Full Text:: Lee1, Wanhui Kim1, Seung Kwan Yoo1, Heather Fitzgerald2,3, James C. Carrington2,3 and Ji Hoon Ahn1

Small RNA binding is a common strategy to suppress RNA silencing by several viral suppressors

Creator:: Lakatos, Lóránt, Csorba, Tibor, Pantaleo, Vitantonio, Chapman, Elisabeth J., Carrington, James C., Liu, Yu-Ping, Dolja, Valerian V., Calvino, Lourdes Fernández, López-Moya, Juan José, and Burgyán, József
Abstract:: RNA silencing is an evolutionarily conserved system that functions as an antiviral mechanism in higher plants and insects. To counteract RNA silencing, viruses express silencing suppressors that interfere with both siRNA- and microRNA-guided silencing pathways. We used comparative in vitro and in vivo approaches to analyse the molecular mechanism of...
Resource Type:: Article
Full Text:: Chapman2, James C Carrington2,3, Yu-Ping Liu2, Valerian V Dolja2,3, Lourdes Fernández Calvino4, Juan José

Functional Analysis of Three Arabidopsis ARGONAUTES Using Slicer-Defective Mutants

Creator:: Carbonell, Alberto, Fahlgren, Noah, Garcia-Ruiz, Hernan, Gilbert, Kerrigan B., Montgomery, Taiowa A., Nguyen, Tammy, Cuperus, Josh T., and Carrington, James C.
Abstract:: In RNA-directed silencing pathways, ternary complexes result from small RNA-guided ARGONAUTE (AGO) associating with target transcripts. Target transcripts are often silenced through direct cleavage (slicing), destabilization through slicer-independent turnover mechanisms, and translational repression. Here, wild-type and active-site defective forms of several Arabidopsis thaliana AGO proteins involved in posttranscriptional silencing were...
Resource Type:: Article
Full Text:: Kerrigan B. Gilbert,a Taiowa A. Montgomery,b,1 Tammy Nguyen,b Josh T. Cuperus,b,2 and James C. Carringtona

Small RNAs serve as a genetic buffer against genomic shock in Arabidopsis interspecific hybrids and allopolyploids

Creator:: Ha, Misook, Lu, Jie, Ramachandran, Vanitharani, Kasschau, Krisitin D., Chapman, Elisabeth J., Carrington, James C., Chen, Xuemei, Wang, Xue-Jei, and Chen, Z. Jeffrey
Abstract:: Small RNAs, including microRNAs (miRNAs), small interfering RNAs (siRNAs), and trans-acting siRNAs (tasiRNAs), control gene expression and epigenetic regulation. Although the roles of miRNAs and siRNAs have been extensively studied, their expression diversity and evolution in closely related species and interspecific hybrids are poorly understood. Here, we show comprehensive analyses...
Resource Type:: Article
Full Text:: , Vanitharani Ramachandrand, Kristin D. Kasschaue, Elisabeth J. Chapmane, James C. Carringtone, Xuemei Chend

Diverse Lifestyles and Strategies of Plant Pathogenesis Encoded in the Genomes of Eighteen Dothideomycetes Fungi

Creator:: Ohm, Robin A., Feau, Nicolas, Henrissat, Bernard, Schoch, Conrad L., Horwitz, Benjamin A., Barry, Kerrie W., Condon, Bradford J., Copeland, Alex C., Dhillon, Braham, Glaser, Fabian, Hesse, Cedar N., Kosti, Idit, LaButti, Kurt, Lindquist, Erika A., Lucas, Susan, Salamov, Asaf A., Bradshaw, Rosie E., Ciuffetti, Lynda, Hamelin, Richard C., Kema, Gert H. J., Lawrence, Christopher, Scott, James A., Spatafora, Joseph W., Turgeon, B. Gillian, de Wit, Pierre J. G. M., Zhong, Shaobin, Goodwin, Stephen B., and Grigoriev, Igor V.
Abstract:: Correction 5 Mar 2013: Ohm RA, Feau N, Henrissat B, Schoch CL, Horwitz BA, et al. (2013) Correction: Diverse Lifestyles and Strategies of Plant Pathogenesis Encoded in the Genomes of Eighteen Dothideomycetes Fungi. PLOS Pathogens 9(3): 10.1371/annotation/fcca88ac-d684-46e0-a483-62af67e777bd
Resource Type:: Article
Full Text:: . Lindquist1, Susan Lucas1, Asaf A. Salamov1, Rosie E. Bradshaw9, Lynda Ciuffetti8, Richard C. Hamelin2,10

Development of Computational, Visualization, and Molecular Tools for Fungal and Oomycete Community Ecology

Creator:: Foster, Zachary Stephen Longiaru
Abstract:: Oomycetes are an important group of organisms with a variety of ecological roles similar to fungi. Although many are well-studied plant pathogens known for their devastating effects on agricultural systems, most are little-studied saprobes and parasites of plants and animals in nearly every ecosystem on earth. The advent of affordable...
Resource Type:: Dissertation
Full Text:: Cultivars Jerry E. Weiland assisted with conceptualization, methodology, project administra- tion, and

Regeneration biology of Erigeron decumbens var. decumbens, an endangered plant of the Willamette Valley

Creator:: Clark, Deborah Louise, 1950-, Finley, Karen K., and Ingersoll, Cheryl A.
Abstract:: Erigeron decumbens var. decumbens, the Willamette daisy, is known only from the Willamette Valley of Oregon. Herbarium records, from the 1800's until 1934, indicate that the Willamette daisy was once common and widely distributed throughout the Willamette Valley (Clark et al. 1993). However, between 1934 and 1980, this taxon was...
Resource Type:: Technical Report
Full Text:: considered to be extinct until its discovery in 1980 at Willow Creek (Lane County) by James Kagan, and at

An overview of the BioCreative 2012 Workshop Track III: interactive text mining task

Creator:: Arighi, Cecilia N., Carterette, Ben, Cohen, K. Bretonnel, Krallinger, Martin, Wilbur, W. John, Fey, Petra, Dodson, Robert, Cooper, Laurel, Van Slyke, Ceri E., Dahdul, Wasila, Mabee, Paula, Li, Donghui, Harris, Bethany, Gillespie, Marc, Jimenez, Silvia, Roberts, Phoebe, Matthews, Lisa, Becker, Kevin, Drabkin, Harold, Bello, Susan, Licata, Luana, Chatr-aryamontri, Andrew, Schaeffer, Mary L., Park, Julie, Haendel, Melissa, Van Auken, Kimberly, Li, Yuling, Chan, Juancarlos, Muller, Hans-Michael, Cui, Hong, Balhoff, James P., Wu, Johnny Chi-Yang, Lu, Zhiyong, Wei, Chih-Hsuan, Tudor, Catalina O., Raja, Kalpana, Subramani, Suresh, Natarajan, Jeyakumar, Cejuela, Juan Miguel, Dubey, Pratibha, and Wu, Cathy
Abstract:: In many databases, biocuration primarily involves literature curation, which usually involves retrieving relevant articles, extracting information that will translate into annotations and identifying new incoming literature. As the volume of biological literature increases, the use of text mining to assist in biocuration becomes increasingly relevant. A number of groups have...
Resource Type:: Article
Full Text:: . Bretonnel Cohen3, Martin Krallinger4, W. John Wilbur5, Petra Fey6, Robert Dodson6, Laurel Cooper7, Ceri E

Computational and analytical framework for small RNA profiling by high-throughput sequencing

Creator:: Fahlgren, Noah, Sullivan, Christopher M., Kasschau, Krisitin D., Chapman, Elisabeth J., Cumbie, Jason S., Montgomery, Taiowa A., Gilbert, Sunny D., Dasenko, Mark, Backman, Tyler W. H., Givan, Scott A., and Carrington, James C.
Abstract:: The advent of high-throughput sequencing (HTS) methods has enabled direct approaches to quantitatively profile small RNA populations. However, these methods have been limited by several factors, including representational artifacts and lack of established statistical methods of analysis. Furthermore, massive HTS data sets present new problems related to data processing and...
Resource Type:: Article
Full Text:: SUNNY D. GILBERT,1,2 MARK DASENKO,1 TYLER W.H. BACKMAN,1,2 SCOTT A. GIVAN,1,2 and JAMES C

Phytophthora Have Distinct Endogenous Small RNA Populations That Include Short Interfering and microRNAs

Creator:: Fahlgren, Noah, Bollmann, Stephanie R., Kasschau, Kristin D., Cuperus, Josh T., Press, Caroline M., Sullivan, Christopher M., Chapman, Elisabeth J., Hoyer, J. Steen, Gilbert, Kerrigan B., Grunwald, Niklaus J., and Carrington, James C.
Abstract:: In eukaryotes, RNA silencing pathways utilize 20-30-nucleotide small RNAs to regulate gene expression, specify and maintain chromatin structure, and repress viruses and mobile genetic elements. RNA silencing was likely present in the common ancestor of modern eukaryotes, but most research has focused on plant and animal RNA silencing systems. Phytophthora...
Resource Type:: Article
Full Text:: , Elisabeth J. Chapman2¤b, J. Steen Hoyer1, Kerrigan B. Gilbert1, Niklaus J. Grünwald3*, James C

RTM3, Which Controls Long-Distance Movement of Potyviruses, Is a Member of a New Plant Gene Family Encoding a Meprin and TRAF Homology Domain-Containing Protein

Creator:: Cosson, Patrick, Sofer, Luc, Hien Le, Quang, Léger, Valérie, Schurdi-Levraud, Valérie, Whitham, Steven A., Yamamoto, Miki L., Gopalan, Suresh, Le Gall, Olivier, Chandresse, Thierry, Carrington, James C., and Revers, Frédéric
Abstract:: Restriction of long-distance movement of several potyviruses in Arabidopsis (Arabidopsis thaliana) is controlled by at least three dominant restricted TEV movement (RTM) genes, named RTM1, RTM2, and RTM3. RTM1 encodes a protein belonging to the jacalin family, and RTM2 encodes a protein that has similarities to small heat shock proteins....
Resource Type:: Article
Full Text:: , Steven A. Whitham3, Miki L. Yamamoto4, Suresh Gopalan5, Olivier Le Gall, Thierry Candresse, James C

Emerging semantics to link phenotype and environment

Creator:: Thessen, Anne E., Bunkers, Daniel E., Buttigieg, Pier Luigi, Cooper, Laurel D., Dahdul, Wasila M., Domisch, Sami, Franz, Nico M., Jaiswal, Pankaj, Lawrence-Dill, Carolyn J., Midford, Peter E., Mungall, Christopher J., Ramírez, Martín J., Specht, Chelsea D., Vogt, Lars, Aldo Vos, Rutger, Walls, Ramona L., White, Jeffrey W., Zhang, Guanyang, Deans, Andrew R., Huala, Eva, Lewis, Suzanna E., and Mabee, Paula M.
Abstract:: Understanding the interplay between environmental conditions and phenotypes is a fundamental goal of biology. Unfortunately, data that include observations on phenotype and environment are highly heterogeneous and thus difficult to find and integrate. One approach that is likely to improve the status quo involves the use of ontologies to standardize...
Resource Type:: Article
Full Text:: environment Emerging semantics to link phenotype and environment Thessen, A. E., Bunker, D. E., Buttigieg

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Creator:: Kral, George L.
Abstract:: The climate of the Pacific Northwest is in flux, and existing forest ecosystems are stressed and poised to shift in fundamental ways, with or without human intervention. This dissertation probes the nature of forest responses to environmental change through investigations of morphology and genetics of three species of alder co-occurring...
Resource Type:: Dissertation

The genome of the xerotolerant mold Wallemia sebi reveals adaptations to osmotic stress and suggests cryptic sexual reproduction

Creator:: Padamsee, Mahajabeen, Kumar, T. K. Arun, Riley, Robert, Binder, Manfred, Boyd, Alex, Calvo, Ana M., Furukawa, Kentaro, Hesse, Cedar, Hohmann, Stefan, James, Tim Y., LaButti, Kurt, Lapidus, Alla, Lindquist, Erika, Lucas, Susan, Miller, Kari, Shantappa, Sourabha, Grigoriev, Igor V., Hibbett, David S., McLaughlin, David J., Spatafora, Joseph W., and Aime, M. Catherine
Abstract:: Wallemia (Wallemiales, Wallemiomycetes) is a genus of xerophilic Fungi of uncertain phylogenetic position within Basidiomycota. Most commonly found as food contaminants, species of Wallemia have also been isolated from hypersaline environments. The ability to tolerate environments with reduced water activity is rare in Basidiomycota. We sequenced the genome of W....
Resource Type:: Article
Full Text:: , Kentaro Furukawa g, Cedar Hesse e, Stefan Hohmann g, Tim Y. James h, Kurt LaButti c, Alla Lapidus c,3

The Gene Ontology in 2010: extensions and refinements

Creator:: Gene Ontology Consortium, Berardini, Tanya Z., Li, Donghui, Huala, Eva, Bridges, Susan, Burgess, Shane, McCarthy, Fiona, Carbon, Seth, Lewis, Suzanna E., Mungall, Christopher J., Abdulla, Amina, Wood, Valerie, Feltrin, Erika, Valle, Giorgio, Chisholm, Rex L., Fey, Petra, Gaudet, Pascale, Kibbe, Warren, Basu, Siddhartha, Bushmanova, Yulia, Eilbeck, Karen, Siegele, Deborah A., McIntosh, Brenley, Renfro, Daniel, Zweifel, Adrienne, Hu, James C., Harris, Midori A., Deegan, Jennifer I., Ireland, Amelia, Lomax, Jane, Jaiswal, Pankaj, Chibucos, Marcus, Gwinn-Giglio, Michelle, Wortman, Jennifer, Hannick, Linda, Madupu, Ramana, Botstein, David, Dolinski, Kara, Livstone, Michael S., Oughtred, Rose, Blake, Judith A., Bult, Carol, Diehl, Alexander D., Dolan, Mary, Drabkin, Harold, Eppig, Janan T., Hill, David P., Ni, Li, Ringwald, Martin, Sitnikov, Dmitry, Collmer, Candace, Torto-Alalibo, Trudy, Laulederkind, Stan, Shimoyama, Mary, Twigger, Simon, D'Eustachio, Peter, Matthews, Lisa, Balakrishnan, Rama, Binkley, Gail, Cherry, J. Michael, Christie, Karen R., Costanzo, Maria C., Engel, Stacia R., Fisk, Dianna G., Hirschman, Jodi E., Hitz, Benjamin C., Hong, Eurie L., Krieger, Cynthia J., Miyasato, Stuart R., Nash, Robert S., Park, Julie, Skrzypek, Marek S., Weng, Shuai, Wong, Edith D., Aslett, Martin, Chan, Juancarlos, Kishore, Ranjana, Sternberg, Paul, Van Auken, Kimberly, Khodiyar, Varsha K., Lovering, Ruth C., and Talmud, Philippa J.
Abstract:: The Gene Ontology (GO) Consortium (http://www.geneontology.org) (GOC) continues to develop, maintain and use a set of structured, controlled vocabularies for the annotation of genes, gene products and sequences. The GO ontologies are expanding both in content and in structure. Several new relationship types have been introduced and used, along with...
Resource Type:: Article
Full Text:: Carbon, Suzanna E. Lewis, Christopher J. Mungall, Amina Abdulla (BBOP, LBNL, Berkeley, CA, USA); Valerie

Comparative Genomics of Plant-Associated Pseudomonas spp.: Insights into Diversity and Inheritance of Traits Involved in Multitrophic Interactions

Creator:: Loper, Joyce E., Hassan, Karl A., Mavrodi, Dmitri V., Davis, Edward W., II, Lim, Chee Kent, Shaffer, Brenda T., Elbourne, Liam D. H., Stockwell, Virginia O., Hartney, Sierra L., Breakwell, Katy, Henkels, Marcella D., Tetu, Sasha G., Rangel, Lorena I., Kidarsa, Teresa A., Wilson, Neil L., van de Mortel, Judith E., Song, Chunxu, Blumhagen, Rachel, Radune, Diana, Hostetler, Jessica B., Brinkac, Lauren M., Durkin, A. Scott, Kluepfel, Daniel A., Wechter, W. Patrick, Anderson, Anne J., Kim, Young Cheol, Pierson, Leland S., III, Pierson, Elizabeth A., Lindow, Steven E., Kobayashi, Donald Y., Raaijmakers, Jos M., Weller, David M., Thomashow, Linda S., Allen, Andrew E., and Paulsen, Ian T.
Abstract:: We provide here a comparative genome analysis of ten strains within the Pseudomonas fluorescens group including seven new genomic sequences. These strains exhibit a diverse spectrum of traits involved in biological control and other multitrophic interactions with plants, microbes, and insects. Multilocus sequence analysis placed the strains in three sub-clades,...
Resource Type:: Article
Full Text:: Joyce E. Loper1,2*, Karl A. Hassan3, Dmitri V. Mavrodi4, Edward W. Davis II1, Chee Kent Lim3, Brenda T

Comparative Genomics of Plant-Associated Pseudomonas spp.: Insights into Diversity and Inheritance of Traits Involved in Multitrophic Interactions

Creator:: Loper, Joyce E., Hassan, Karl A., Mavrodi, Dmitri V., Davis, Edward W., II, Lim, Chee Kent, Shaffer, Brenda T., Elbourne, Liam D. H., Stockwell, Virginia O., Hartney, Sierra L., Breakwell, Katy, Henkels, Marcella D., Tetu, Sasha G., Rangel, Lorena I., Kidarsa, Teresa A., Wilson, Neil L., van de Mortel, Judith E., Song, Chunxu, Blumhagen, Rachel, Radune, Diana, Hostetler, Jessica B., Brinkac, Lauren M., Durkin, A. Scott, Kluepfel, Daniel A., Wechter, W. Patrick, Anderson, Anne J., Kim, Young Cheol, Pierson, Leland S., III, Pierson, Elizabeth A., Lindow, Steven E., Kobayashi, Donald Y., Raaijmakers, Jos M., Weller, David M., Thomashow, Linda S., Allen, Andrew E., and Paulsen, Ian T.
Abstract:: We provide here a comparative genome analysis of ten strains within the Pseudomonas fluorescens group including seven new genomic sequences. These strains exhibit a diverse spectrum of traits involved in biological control and other multitrophic interactions with plants, microbes, and insects. Multilocus sequence analysis placed the strains in three sub-clades,...
Resource Type:: Article
Full Text:: Joyce E. Loper1,2*, Karl A. Hassan3, Dmitri V. Mavrodi4, Edward W. Davis II1, Chee Kent Lim3, Brenda T

Comparative Genomics of a Plant-Pathogenic Fungus, Pyrenophora tritici-repentis, Reveals Transduplication and the Impact of Repeat Elements on Pathogenicity and Population Divergence

Creator:: Manning, Viola A., Pandelova, Iovanna, Dhillon, Braham, Wilhelm, Larry J., Goodwin, Stephen B., Berlin, Aaron M., Figueroa, Melania, Freitag, Michael, Hane, James K., Henrissat, Bernard, Holman, Wade H., Kodira, Chinnappa D., Martin, Joel, Oliver, Richard P., Robbertse, Barbara, Schackwitz, Wendy, Schwartz, David C., Spatafora, Joseph W., Turgeon, B. Gillian, Yandava, Chandri, Young, Sarah, Zhou, Shiguo, Zeng, Qiandong, Grigoriev, Igor V., Ma, Li-Jun, and Ciuffetti, Lynda M.
Abstract:: Pyrenophora tritici-repentis is a necrotrophic fungus causal to the disease tan spot of wheat, whose contribution to crop loss has increased significantly during the last few decades. Pathogenicity by this fungus is attributed to the production of host-selective toxins ( HST), which are recognized by their host in a genotype-specific...
Resource Type:: Article
Full Text:: ,‡‡,§§ James K. Hane,*** Bernard Henrissat,††† Wade H. Holman,* Chinnappa D. Kodira,**,‡‡‡ Joel Martin

Grapevine leafroll-associated virus 3

Creator:: Maree, Hans J., Almeida, Rodrigo P. P., Bester, Rachelle, Chooi, Kar Mun, Cohen, Daniel, Dolja, Valerian V., Fuchs, Marc F., Golino, Deborah A., Jooste, Anna E. C., Martelli, Giovanni P., Naidu, Rayapati A., Rowhani, Adib, Saldarelli, Pasquale, and Burger, Johan T.
Abstract:: Grapevine leafroll disease (GLD) is one of the most important grapevine viral diseases affecting grapevines worldwide. The impact on vine health, crop yield, and quality is difficult to assess due to a high number of variables, but significant economic losses are consistently reported over the lifespan of a vineyard if...
Resource Type:: Article
Full Text:: Chooi 4, Daniel Cohen5, Valerian V. Dolja6, Marc F. Fuchs7, Deborah A. Golino8, Anna E. C. Jooste9

Irrigation water and plant density effects on the epidemiology of aerial stem rot of potatoes

Creator:: Cappaert, Marlys R.
Abstract:: Field plots of cv. Russet Burbank potatoes from a single seedlot were established at four sites over two seasons (1985-86) in two locations in Oregon to determine the role of water-borne inoculum of Erwinia carotovora in plant infection. One site at each location was irrigated from a surface-water source and...
Resource Type:: Masters Thesis
Full Text:: as E. c. subsp. carotovora. About 25% of the E. c. subsp. carotovora strains recovered from all

Establishment tolerance of six native sagebrush steppe species to imazapic (PLATEAU®) herbicide implications for restoration and recovery

Creator:: Bekedam, Steven
Abstract:: Scientists and land managers realize that integrated weed management (IWM) strategies are needed to attain successful and lasting improvements of weed infested landscapes. At this time no broadly reliable and environmentally safe IWM strategy has been developed to control exotic annual grasses that dominate many ecosystems of the northern Great...
Resource Type:: Masters Thesis
Full Text:: (Elymus wawawaiensis J. Camison & Barkworth), showed positive responses to imazapic applications. For E

Seed and seedling ecology of Artemisia tridentata in a restoration context

Creator:: Wijayratne, Upekala C.
Abstract:: The semi-arid sagebrush steppe ecosystem is one of the largest biomes in North America. The steppe provides critical habitat and forage for wildlife and is economically important to recreation and livestock industries. However, the ecosystem is threatened primarily due to several negative effects associated with expansion of the exotic annual...
Resource Type:: Dissertation
Full Text:: affected when grown with E. wawawaiensis or A. xhybrid compared to control seedlings, but root growth

Systematic, genomic, and transcriptomic analysis of mycoparasitic Tolypocladium species and their Elaphomyces hosts

Creator:: Quandt, C. Alisha
Abstract:: Fungi in the genus Tolypocladium are diverse in their host associations, but the predominant ecologies include parasites of the ectomycorrhizal genus Elaphomyces and pathogens of insects. The aim of this dissertation research is to examine the evolution of these fungi and their host associations. To accomplish this several lines of...
Resource Type:: Dissertation
Full Text:: Chapter 6. Like other ectomycorrhizal Ascomycota, E. granulatus is expanded in genome size, but has a

The Generation Challenge Programme Platform: Semantic Standards and Workbench for Crop Science

Creator:: Bruskiewich, Richard, Senger, Martin, Davenport, Guy, Ruiz, Manuel, Rouard, Mathieu, Hazekamp, Tom, Takeya, Masaru, Doi, Koji, Satoh, Kouji, Costa, Marcos, Simon, Reinhard, Balaji, Jayashree, Akintunde, Akinnola, Mauleon, Ramil, Wanchana, Samart, Shah, Trushar, Anacleto, Mylah, Portugal, Arllet, Ulat, Victor Jun, Thongjuea, Supat, Braak, Kyle, Ritter, Sebastian, Dereeper, Alexis, Skofic, Milko, Rojas, Edwin, Martins, Natalia, Pappas, Georgios, Alamban, Ryan, Almodiel, Roque, Barboza, Lord Hendrix, Detras, Jeffrey, Manansala, Kevin, Mendoza, Michael Jonathan, Morales, Jeffrey, Peralta, Barry, Valerio, Rowena, Zhang, Yi, Gregorio, Sergio, Hermocilla, Joseph, Echavez, Michael, Yap, Jan Michael, Farmer, Andrew, Schiltz, Gary, Lee, Jennifer, Casstevens, Terry, Jaiswal, Pankaj, Meintjes, Ayton, Wilkinson, Mark, Good, Benjamin, Wagner, James, Morris, Jane, Marshall, David, Collins, Anthony, Kikuchi, Shoshi, Metz, Thomas, McLaren, Graham, and van Hintum, Theo
Abstract:: The Generation Challenge programme (GCP) is a global crop research consortium directed toward crop improvement through the application of comparative biology and genetic resources characterization to plant breeding. A key consortium research activity is the development of a GCP crop bioinformatics platform to support GCP research. This platform includes the...
Resource Type:: Article
Full Text:: . Rice, and T. Oinn, “Soaplab—a unified Sesame door to analysis tools,” in Proceedings of the 2nd UK E

Improving Best Management Practices for Potato Production in the Columbia Basin : An Evaluation of Essential Oils for Control of Verticillium Wilt and the Fate of Chloride in the System

Creator:: Light, Sarah Elizabeth
Abstract:: Although the potato (Solanum tuberosum L.) is a global crop, few growing regions rival the high yields of the Columbia Basin of Eastern Oregon and Washington. Two research projects were conducted in Hermiston, OR to contribute to best management practices for the region. The first project evaluated the efficacy of...
Resource Type:: Masters Thesis
Full Text:: between nitrate-N and Cl uptake (James et al., 1970a; James et al., 1970b; Saffigna and Keeney, 1977

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