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Development, reproductive morphology, and cytology of Halosaccion glandiforme (Gmelin) Ruprecht (Rhodophyceae, Palmariales)

Creator:: Mitman, Grant Gregory
Abstract:: Halosaccion glandiforme, a member of the family Palmariaceae, is a common macrophyte found in the high to middle intertidal zones of the north temperate Pacific Ocean. Plants were grown in culture from spores and the lift history was critically examined by the use of scanning EM and light microscopy. H....
Resource Type:: Masters Thesis
Full Text:: Halosaccion glandiforme (Gmelin) Ruprecht (Rhodophyceae, Palmariales) AN ABSTRACT OF THE THESIS OF Grant

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:: . Kasschau1, Elisabeth J. Chapman1,2, Christopher M. Sullivan1, Jason S. Cumbie1, Scott A. Givan1, Theresa F

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:: Tirmania AN ABSTRACT OF THE THESIS OF Abdulmagid M. Alsheikh for the degree of Master of Science in

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:: part by National Science Foundation Grant BSR 9007186 to Drs. Nancy S. Weber, James M. Trappe and

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

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:: Doctoral Dissertation Research Grant BMS 74-12750, NSF Grant GB-27378 to Dr. J. M. Trappe, and by NSF

Biology of chlamydospores of Phytophthora ramorum

Creator:: Smith, Aaron Lee
Abstract:: The chlamydospore is a survival spore produced by 35 of the 75 described species of Phytophthora. Phytophthora ramorum Werres, de Cock & Man in't Veld, the causal agent of Sudden Oak Death (SOD), produces abundant chlamydospores in artificial culture and plant tissue. The chlamydospore is likely the most important survival...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Everett M. Hansen The chlamydospore is a survival spore produced by 35 of the

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:: : Jaws M. Trappe We investigated the root endophytic fungi of lupine using four approaches: (1

Resistance mechanisms of Port-Orford-cedar to Phytophthora lateralis

Creator:: Oh, Eunsung
Abstract:: Breeding Port-Orford-cedar for resistance to Phytophthora lateralis, a causal agent of root disease, begins by screening, through artificial inoculation, phenotypically resistant trees selected from natural stands. The successful program selected tolerant or resistant POC parent trees for the purpose of disease management. Candidate resistant POCs were used in my dissertation...
Resource Type:: Dissertation
Full Text:: Mechanisms of Port-Orford-Cedar to Phytonhthora lateralis. Abstract approved: M. Hansen Breeding Port

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:: : ______________________________________________________ Jared M. LeBoldus Sudden oak death is caused by the clonally reproducing generalist

ScholarsArchive@OSU

Development, reproductive morphology, and cytology of Halosaccion glandiforme (Gmelin) Ruprecht (Rhodophyceae, Palmariales)

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

Taxonomy of desert truffles : the genera Phaeangium and Tirmania

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

Mycorrhizal fungi and their relationship to plant succession in subalpine habitats

The genus Leucogaster (Basidiomycetes, Leucogastraceae)

Biology of chlamydospores of Phytophthora ramorum

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

Resistance mechanisms of Port-Orford-cedar to Phytophthora lateralis

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

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