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Host range, serological and electron microscope studies of phages of Agrobacterium tumefaciens (Smith and Townsend) Conn

Creator:: Buangsuwon, Pairoj
Abstract:: Phages of crown gall bacteria were among the first to be isolated and certain properties of these phages have been studied by a number of investigators. However, several important characteristics have not been studied in detail. The present investigation was made in order to determine the major sources of phages...
Resource Type:: Dissertation
Full Text:: morphology of the phages by electron microscopy. 3 LITERATURE REVIEW According to Adams (2), the

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:: electron microscopy ..................................... 75 3.3.3 Direct counts of zoospores attracted to

Development, reproductive morphology, and cytology of Pelvetiopsis limitata (Setchell) Gardner (Phaeophyta, Fucales)

Creator:: Henry, Eric Charles
Abstract:: Pelvetiopsis limitata (Setchell) Gardner (Phaeophyta, Fucales), collected on the central Oregon coast, was studied by electron microscopy, and by light microscopy using methacrylate embedding and toluidine blue, acid fuchsin, PAS and anilin blue staining. The sperm of both P. limitata and Pelvetia fastigiata (J. Agardh) DeToni (from northern California) are...
Resource Type:: Masters Thesis
Full Text:: , Fucales), collected on the central Oregon coast, was studied by electron microscopy, and by light

Evaluation of the colonization and biofilm production by Burkholderia pyroccinia FP62 on geranium leaves

Creator:: Wallace, Patricia K.
Abstract:: The leaf surface is a stark environment for bacterial colonists with limited availability of nutrients, water and protected niches. Despite these limitations, a plethora of bacteria appear to have adapted ways to survive and flourish on leaf surfaces. One mechanism of survival is the formation of biofilms. Biofilms are a...
Resource Type:: Masters Thesis
Full Text:: scanning electron and scanning ion microscopy. Microscopy investigations established that biofilms

The infection and colonization of Douglas-fir needles by the Swiss needle cast pathogen, Phaeocryptopus gaeumannii (Rhode) Petrak

Creator:: Capitano, Bryan R.
Abstract:: Phaeocryptopus gaeumannii is a pathogenic fungus on Douglas-fir needles which has become a serious threat to timber production in the last decade along the Oregon coast This research was undertaken to describe the general biology and pathology of F. gaeumannii on Douglas-fir needles and how environmental variables affect fungal development....
Resource Type:: Masters Thesis
Full Text:: P. gaeumannii was described using histopathology methods such as scanning electron microscopy, thin

The development and maturation of the Elaiosome of Dicentra formosa (Andr.) Walp

Creator:: Barnes, April E. Hootman
Abstract:: The developmental cytology of the elaiosome of Dicentra formosa (Andr.)Walp. was investigated from the time of initial differentiation until complete maturation. Light and transmission electron microscopy studies showed that the elaiosome becomes differentiated from epidermal tissue in the prefertilized ovule. At this time the cells are characterized by their large...
Resource Type:: Masters Thesis
Full Text:: electron microscopy studies showed that the elaiosome becomes differentiated from epidermal tissue in the

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:: Keywords: Aqua(glycero)porins Electron microscopy Halophile Ion homeostasis Solute accumulation Xerophile

Studies on viruses isolated from roses with rose mosaic symptoms

Creator:: Watson, Thomas Ray
Abstract:: Previous work on the rose mosaic virus has produced uncertainty concerning the identity and properties of this virus. This work was undertaken to help establish the true identity of the virus and to determine some of its properties. A mechanically transmissible virus associated with rose mosaic virus disease of Rosa...
Resource Type:: Masters Thesis
Full Text:: determined by electron microscopy, with two size ranges at 20 -30 nip, and 35 -45 mp,. An anti- serum to

Location of prune dwarf and prunus necrotic ringspot viruses in sweet cherry pollen and fruit

Creator:: Kelley, Randall David
Abstract:: The location of prune dwarf virus (PDV) and Prunus necrotic ringspot virus (PNRSV) in pollen and seed from infected and healthy sweet cherry trees pollinated with infected pollen was investigated. Virus-like particles were observed in the cytoplasm of pollen grains from PDV-infected cherry trees using transmission electron microscopy. No particles...
Resource Type:: Dissertation
Full Text:: grains from PDV-infected cherry trees using trans- mission electron microscopy. No particles were

Viability and infective potential of Phytophthora pini zoospores in a recirculating irrigation system

Creator:: Shay, Sarah D.
Abstract:: Phytophthora pini Leonian, recently re-established from P. citricola I, is a pathogen with a wide range of forest and nursery hosts. It causes foliar infections in horticultural nurseries in Oregon, where recirculating irrigation systems are common. Increased use of recirculating irrigation systems may contribute to disease caused by waterborne plant...
Resource Type:: Masters Thesis
Full Text:: ≤ 2,000 propagules/mL. Scanning electron microscopy of leaves inoculated with encysted propagules

ScholarsArchive@OSU

Host range, serological and electron microscope studies of phages of Agrobacterium tumefaciens (Smith and Townsend) Conn

Resistance mechanisms of Port-Orford-cedar to Phytophthora lateralis

Development, reproductive morphology, and cytology of Pelvetiopsis limitata (Setchell) Gardner (Phaeophyta, Fucales)

Evaluation of the colonization and biofilm production by Burkholderia pyroccinia FP62 on geranium leaves

The infection and colonization of Douglas-fir needles by the Swiss needle cast pathogen, Phaeocryptopus gaeumannii (Rhode) Petrak

The development and maturation of the Elaiosome of Dicentra formosa (Andr.) Walp

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

Studies on viruses isolated from roses with rose mosaic symptoms

Location of prune dwarf and prunus necrotic ringspot viruses in sweet cherry pollen and fruit

Viability and infective potential of Phytophthora pini zoospores in a recirculating irrigation system

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