Index Catalog // ScholarsArchive@OSU

Cytokinin production by Agrobacterium tumefaciens

Creator:: Kaiss-Chapman, Richard Wilkinson
Abstract:: Certain plant-associated prokaryotes such as Corynebacteriurn fascians and Agrobacterium tumefaciens are known to produce substantial levels of cytokinins. In view of the fragmentary and presumptive evidence available on the quantitative and qualitative levels of cytokinins produced by A. tumefaciens, it was decided to conduct a study of the cytokinins produced...
Resource Type:: Dissertation
Full Text:: TUMEFACIENS Abstract approved: Redacted for Privacy Roy Owen Morris Certain plant-associated prokaryotes

Anatomical changes in the secondary phloem of grand fir (Abies grandis (Dougl.) Lindl.), induced by the balsam woolly aphid (Adelges piceae Ratz.)

Creator:: Saigo, Roy Hirofumi
Abstract:: The balsam woolly aphid (Adelges piceae Ratz.) feeds by inserting its stylets intra- and intercellularly into the cortex or outer phloem of the true firs. While feeding, the aphid injects into the bark an unknown stimulatory substance which affects the adjacent cortical parenchyma cells, the activity of the vascular cambium...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF ROY HIROFUMI SAIGO for the

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

Ecology and biological control of an apomictic invasive plant, Chondrilla juncea (Asteraceae)

Creator:: Campanella, Donald M.
Abstract:: A study consisting of three parts was undertaken to investigate how variation in species interactions, population genetic structure, epidemiological parameters, and plant breeding system may influence the ecology and biological control of an apomictic invasive plant, Chondrilla juncea (Asteraceae). Interactions between natural enemy species may modify their net effect on...
Resource Type:: Dissertation
Full Text:: graduate committee -- Bitty Roy, Elizabeth Borer, and Barbara Lachenbruch -- have provided indispensable

Cytokinin oxidase activity from Phaseolus vulgaris L. cv. Great Northern callus tissues

Creator:: Chatfield, J. Mark
Abstract:: Cytokinin oxidase activity in callus tissues of Phaseolus vulgaris L. cv. Great Northern has been examined using an assay based on the oxidation of radioactively labeled N⁶ -(Δ² -isopentenyl) adenine (i⁶Ade) to adenine (Ade). Conditions for the quantitative extraction and assay of the enzyme have been established. The substrate specificity...
Resource Type:: Dissertation
Full Text:: graduate student. I also wish to thank my graduate committee, Dr. David Mok, Dr. Roy Morris, Dr. Tom

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Creator:: Esterson, Andrew
Abstract:: Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...
Resource Type:: Masters Thesis
Full Text:: were lower in the native range compared to invaded locales, thus supporting the ERH (Roy et al. 2010

How Effective Are DNA Barcodes in the Identification of African Rainforest Trees?

Creator:: Parmentier, Ingrid, Duminil, Jérôme, Kuzmina, Maria, Philippe, Morgane, Thomas, Duncan W., Kenfack, David, Chuyong, George B., Cruaud, Corinne, and Hardy, Olivier J.
Abstract:: Background: DNA barcoding of rain forest trees could potentially help biologists identify species and discover new ones. However, DNA barcodes cannot always distinguish between closely related species, and the size and completeness of barcode databases are key parameters for their successful application. We test the ability of rbcL, matK and...
Resource Type:: Article
Full Text:: 2 April 2013 | Volume 8 | Issue 4 | e54921 T a b le 2 . B ar co d in g su cc e ss o f A fr ic

Growth and replacement patterns occuring among selected dominant species associated with plant succession on Douglas fir clear-cuts

Creator:: Robinson, Myles Canby
Abstract:: Growth and replacement patterns of four successionally important species occurring on Douglas fir clear-cuts were investigated from September 1964 to June 1967. The study was carried out on the Marys Peak watershed located near Corvallis, Oregon. Species used in the study include Holcus lanatus, Senecio jacobaea, Lotus crassifolius var. subglaber,...
Resource Type:: Dissertation
Full Text:: Frederic E. Clernents was probably the rnost influential of the early Arnerican ecologists. During the

An algorithm for detecting Trichodesmium surface blooms in the South Western Tropical Pacific

Creator:: Dupouy, C., Benielli-Gary, D., Neveux, J., Dandonneau, Y., and Westberry, T. K.
Abstract:: Trichodesmium, a major colonial cyanobacterial nitrogen fixer, forms large blooms in NO₃-depleted tropical oceans and enhances CO₂ sequestration by the ocean due to its ability to fix dissolved dinitrogen. Thus, its importance in C and N cycles requires better estimates of its distribution at basin to global scales. However, existing...
Resource Type:: Article
Full Text:: l’Étoile Site de Cĥateau-Gombert 38, rue Fréd́eric Joliot-Curie 13388, Marseille Cedex 13, France 3UPMC

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

ScholarsArchive@OSU

Cytokinin production by Agrobacterium tumefaciens

Anatomical changes in the secondary phloem of grand fir (Abies grandis (Dougl.) Lindl.), induced by the balsam woolly aphid (Adelges piceae Ratz.)

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

Ecology and biological control of an apomictic invasive plant, Chondrilla juncea (Asteraceae)

Cytokinin oxidase activity from Phaseolus vulgaris L. cv. Great Northern callus tissues

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

How Effective Are DNA Barcodes in the Identification of African Rainforest Trees?

Growth and replacement patterns occuring among selected dominant species associated with plant succession on Douglas fir clear-cuts

An algorithm for detecting Trichodesmium surface blooms in the South Western Tropical Pacific

Landscape Genomics and Climatic Responses of Willamette Valley Alders

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