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The glutamine synthetases in soybean root nodules and free-living Rhizobium japonicum

Creator:: Guevara, Juan Garcia
Abstract:: Glutamine synthetase activity is present in both the cytosol and bacteroid fractions of soybean root nodules. Total activity measurements indicate that at least 90% of the activity in nodules is located in the cytosol. Results reported by McParland, et al. (29), showed that many properties of glutamine synthetase from nodule...
Resource Type:: Dissertation
Full Text:: -living Rhizobium japonicum AN ABSTRACT OF THE THESIS OF JUAN GARCIA GUEVARA, JR. for the DOCTOR OF

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

Roles and Programming of Arabidopsis ARGONAUTE Proteins during Turnip Mosaic Virus Infection

Creator:: Garcia-Ruiz, Hernan, Carbonell, Alberto, Hoyer, J. Steen, Fahlgren, Noah, Gilbert, Kerrigan B., Takeda, Atsushi, Giampetruzzi, Annalisa, Garcia Ruiz, Mayra T., McGinn, Michaela G., Lowery, Nicholas, Martinez Baladejo, Maria T., and Carrington, James C.
Abstract:: In eukaryotes, ARGONAUTE proteins (AGOs) associate with microRNAs (miRNAs), short interfering RNAs (siRNAs), and other classes of small RNAs to regulate target RNA or target loci. Viral infection in plants induces a potent and highly specific antiviral RNA silencing response characterized by the formation of virus-derived siRNAs. Arabidopsis thaliana has...
Resource Type:: Article

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:: ARGONAUTES Using Slicer-Defective MutantsW OA Alberto Carbonell,a Noah Fahlgren,a Hernan Garcia-Ruiz,a

Genomic Resources for Phylogenetics, Species Delimitation, and Geographic Localization of Neotropical Tree Species Cedrela odorata L. (Meliaceae)

Creator:: Finch, Kristen N.
Abstract:: Biodiversity loss is of global concern, and is due in part to deforestation and high consumer demand for wood and wood products. The neotropical tree species Cedrela odorata (“Spanish cedar” or “cedro”) is economically valuable for its wood and faces threats of overexploitation. Due to strong similarities in wood features...
Resource Type:: Dissertation
Full Text:: for C. odorata in trade. This pressure is expected to make these species more vulnerable if current

Development of in vitro lily scale budlets as related to virus elimination

Creator:: Ruttum, Joanne C.
Abstract:: Lily hybrids vary in their ability to produce virus-free (VF) bulblets when grown from virus-infected scales in tissue culture. Asiatic hybrids typically produce a higher percentage of in vitro VF scale bulblets than do Lilium longiflorum cultivars. Three hypotheses concerning the cause of this variation are tested on five lily...
Resource Type:: Masters Thesis
Full Text:: virus elimination AN ABSTRACT OF THE THESIS OF Joanne C. Ruttum for the degree of Master of Science

Some cytological aspects of streak mottle virus in Lilium speciosum Thunberg

Creator:: Elser, John Elmore
Abstract:: Cultivated lilies include many garden varieties in addition to the Easter lily, Lilium longiflorum Thunb. A popular member of the garden group is Lilium speciosum Thunb., whose leaves can be discolored by a virus symptom described as streak mottle. This disorder is characterized by dashes of chlorotic tissue interspersed with...
Resource Type:: Masters Thesis
Full Text:: approved: T. C. Allen, Jr. Cultivated lilies include many garden varieties in addition to the Easter

Host and Pathogen Genetics in the Sharp Eyespot Disease of Wheat

Creator:: Liu, Jiang
Abstract:: Wheat sharp eyespot (SES), caused by the soil-borne fungus Rhizoctonia cerealis is a common stem disease of wheat globally. The disease caused a severe and extensive epidemic throughout the Willamette Valley of Oregon in 2014 and has remained one of the most important wheat diseases in this region. However, litte...
Resource Type:: Dissertation
Full Text:: :_______________________________________________________________ Christopher C. Mundt Wheat sharp eyespot (SES), caused by the soil-borne fungus

Role of GacSA Two-component System and Bacterial Surface Attachment in Pseudomonas syringae Virulence

Creator:: O'Malley, Megan R.
Abstract:: Pseudomonas syringae are plant pathogenic bacteria that cause disease by rapidly multiplying within the aboveground tissues of host plants. Growth of P. syringae within plant host tissues requires the disarmament of host immune defenses that limit microbial growth. To combat host defenses, P. syringae deploys a type III secretion system...
Resource Type:: Dissertation
Full Text:: project. J.A. supervised the project. C-F.C. and N-C.L. generated and supplied gacA- mutant strains. M.O

Permineralized Mesozoic Moss Gametophytes and their Implications for Bryophyte Evolution

Creator:: Bippus, Alexander C.
Abstract:: Mosses (Phylum Bryophyta) are widely considered to be among the most ancient groups of land plants (embryophytes) and they are the second most speciose embryophyte phylum with ~13,000 extant species. Despite their diversity and antiquity, mosses have a limited fossil record, which primarily consists of gametophytes entombed in Cenozoic amber....
Resource Type:: Dissertation
Full Text:: Alexander C. Bippus for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on

ScholarsArchive@OSU

The glutamine synthetases in soybean root nodules and free-living Rhizobium japonicum

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

Roles and Programming of Arabidopsis ARGONAUTE Proteins during Turnip Mosaic Virus Infection

Functional Analysis of Three Arabidopsis ARGONAUTES Using Slicer-Defective Mutants

Genomic Resources for Phylogenetics, Species Delimitation, and Geographic Localization of Neotropical Tree Species Cedrela odorata L. (Meliaceae)

Development of in vitro lily scale budlets as related to virus elimination

Some cytological aspects of streak mottle virus in Lilium speciosum Thunberg

Host and Pathogen Genetics in the Sharp Eyespot Disease of Wheat

Role of GacSA Two-component System and Bacterial Surface Attachment in Pseudomonas syringae Virulence

Permineralized Mesozoic Moss Gametophytes and their Implications for Bryophyte Evolution

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