Index Catalog // ScholarsArchive@OSU

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:: active emanation from P. digitatum. More recently Ilag and Curtis (1968) showed that ethylene is a

Scratching the Surface of the Potato Geocaulosphere: Characterizing the Microbiome of Seed Tuber Tare Soil and its Impact on the Rhizosphere Microbiome

Creator:: Delventhal, Kayla D.
Abstract:: For tuberizing crops like potato (Solanum tuberosum), the geocaulosphere, or the zone of soil in contact with and influenced by the tuber, is a distinct sphere of microbial life and represents an important interface between the potato crop and the soil environment. Upon potato harvest, specific geocaulosphere soil called tare...
Resource Type:: Masters Thesis
Full Text:: A) Fungi and B) Bacteria using Bray-Curtis dissimilarity…………………………………………….…69 3.2 Graphical

Responses of Pacific Northwest prairies to soil nutrient manipulations : implications for restoration of Castilleja levisecta and control of invasive species

Creator:: Lawrence, Caitlin E.
Abstract:: Pacific Northwest prairies have become significantly reduced in extent, and in the Willamette Valley of Oregon, less than one percent of native upland prairies remain. Many species have been impacted by this extreme loss of habitat, including Castilleja levisecta (golden paintbrush), a threatened hemiparasitic forb species endemic to the Pacific...
Resource Type:: Masters Thesis
Full Text:: ., R.A. Klips, L.E. Nave, S.D. Frey and P.S. Curtis. 2004. Effects of soil carbon amendment on

Cryptogam communities in forest and steppe ecosystems of Oregon, USA

Creator:: Root, Heather T.
Abstract:: I focus on addressing knowledge gaps relating to management of cryptogams in Oregon's public lands in Pseudotsuga menziesii-Tsuga heterophylla forests on the west side of the Cascade Range and dryland steppe in the Cascade Range's rainshadow. While a great deal of research has illustrated the importance of late-successional forests for...
Resource Type:: Dissertation
Full Text:: ) and the average within-site Sørensen distance (Bray & Curtis 1957) calculated in PC-ORD (McCune

Salt marsh reestablishment following dike breaching in the Salmon River estuary, Oregon

Creator:: Mitchell, Diane Lynne
Abstract:: A 22 ha, 1S yeas old, diked permanent pasture in the Salmon River estuary in Lincoln County, Oregon, was chosen for a study to determine the potential for natural salt marsh restoration with dike breaching. Two undiked fragments of relatively undisturbed salt marsh, one at each end of the study...
Resource Type:: Dissertation
Full Text:: University Soil Testing Laboratory . . . . . . . . . . . . . . 45 3 Bray-Curtis dissimilarity indices for

Diseases of Rhododendron and Boxwood: Survey and Virulence of Phytophthora Root Rot and Management of Boxwood Blight with Systemic Fungicides

Creator:: Sacher, Gabriel
Abstract:: Diseases can be a substantial threat to woody plant production, a major industry in Oregon. Boxwood (Buxus spp.) and rhododendron (Rhododendron subgenus Rhododendron and Hymenanthes) represent the top two broadleaf evergreen woody plants by farmgate value in Oregon. Historically, Phytophthora root rot has been considered the most destructive disease of...
Resource Type:: Dissertation

The influence of soil fumigants and soil fungicides on some important soil-borne plant pathogens

Creator:: Liu, Marlene Mei-yu
Abstract:: Twelve chemicals (Busan 72, Chloropicrin, Dacthal, Dexon, Duter, EP 161, Lanstan, Methyl bromide, Phaltan, Vapam, Vidden D, Vorlex) were tested to determine their effect on populations of certain important soil-borne microorganisms including the onion pink root fungus Pyrenochaeta terrestris. The soil used was from a field in Malheur County, Oregon...
Resource Type:: Masters Thesis
Full Text:: Hoss and Jerre Swink. Soil fumigation for onion disease and weed control. Ft. Collins, 1965. 2 p

Vegetative ecology of a montane mire, Crater Lake National Park, Oregon

Creator:: Seyer, Susan C.
Resource Type:: Masters Thesis
Full Text:: -dimensional stand ordinations, reciprocal averaging and a Bray-Curtis polar ordination. Defined community

The effects of nitrogen manipulations and hydrology on the establishment and competitive abilities of wetland prairie plant species (western Oregon)

Creator:: Davis, Kimberly J.
Abstract:: Many studies suggest that weedy plant species are most successful when soil nitrogen in abundant. Consequently, I used soil nitrogen manipulations to determine if altering nitrogen would affect the establishment of both weedy and native plant species in a western Oregon wetland prairie. In two studies, we added carbon amendments...
Resource Type:: Dissertation

Lichen Biomonitoring from Valley to Alpine in Central and Southern California

Creator:: Kovasi, Adrienne I.
Abstract:: In the mountains of central and southern California, high elevation wilderness areas lack epiphytic lichens that can be used to inform us about atmospheric deposition in multiple ways. Epiphytic lichens are capable of accumulating elements proportionally to the local atmospheric concentration, establishing them as commonly used biomonitor of key elements....
Resource Type:: Masters Thesis

ScholarsArchive@OSU

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

Scratching the Surface of the Potato Geocaulosphere: Characterizing the Microbiome of Seed Tuber Tare Soil and its Impact on the Rhizosphere Microbiome

Responses of Pacific Northwest prairies to soil nutrient manipulations : implications for restoration of Castilleja levisecta and control of invasive species

Cryptogam communities in forest and steppe ecosystems of Oregon, USA

Salt marsh reestablishment following dike breaching in the Salmon River estuary, Oregon

Diseases of Rhododendron and Boxwood: Survey and Virulence of Phytophthora Root Rot and Management of Boxwood Blight with Systemic Fungicides

The influence of soil fumigants and soil fungicides on some important soil-borne plant pathogens

Vegetative ecology of a montane mire, Crater Lake National Park, Oregon

The effects of nitrogen manipulations and hydrology on the establishment and competitive abilities of wetland prairie plant species (western Oregon)

Lichen Biomonitoring from Valley to Alpine in Central and Southern California

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