Index Catalog // ScholarsArchive@OSU

Seeing Genes: Multiscale Phenotyping Reveals Gene Functions in Maize Pollen

Creator:: Warman, Cedar D.
Abstract:: Plant sexual reproduction requires a broad array of molecular mechanisms to proceed successfully. Some of these mechanisms are well-studied, but our knowledge of them as a whole is fundamentally incomplete. Pollen tube growth is a key part of this process, facilitating the delivery of the sperm cells to the female...
Resource Type:: Dissertation
Full Text:: approved: ______________________________________________________ John E. Fowler Plant sexual

The effects of abscisic acid on gene expression during embryogenesis in wheat

Creator:: Williamson, John D. (John David), 1948-
Resource Type:: Dissertation
Full Text:: Embryogenesis in Wheat AN ABSTRACT OF THE THESIS OF John D. Williamson for the degree of Doctor of Philosophy

The Gac regulon of Pseudomonas fluorescens SBW25

Creator:: Cheng, Xu, de Bruijn, Irene, van der Voort, Menno, Loper, Joyce E., and Raaijmakers, Jos M.
Abstract:: Transcriptome analysis of Pseudomonas fluorescensSBW25 showed that 702 genes were differentially regulated in a gacS::Tn5 mutant, with 300 and 402 genes up- and downregulated respectively. Similar to the Gac regulon of other Pseudomonas species, genes involved in motility, biofilm formation, siderophore biosynthesis and oxidative stress were differentially regulated in the...
Resource Type:: Article
Full Text:: doi:10.1111/1758-2229.12061 © 2013 John Wiley & Sons Ltd and Society for Applied Microbiology

Male gametophyte specific expression helps identify a conserved gene associated with increased pollen fitness

Creator:: Colebrook, Sean Jr., Unger-Wallace, Erica, and Vollbrecht, Erik
Abstract:: GRMZM2G372877 was identified as a gene with potential function in the male gametophyte based on its strong expression in mature pollen relative to other maize tissues (Chettoor et al. 2014). Identification of a Ds insertion mutation in this gene from the Brutnell/Vollbrecht collection provided further support for this hypothesis, as...
Resource Type:: Poster
Full Text:: Colebrook1, Erica Unger-Wallace2, Erik Vollbrecht2, John Fowler1 1Department of Botany and Plant Pathology

Identification and characterization of seven ROP GTPases in Zea mays

Creator:: Christensen, Todd M.
Abstract:: Regulation of cell division and expansion are critical for plant development. The mechanisms that control these processes are not clearly understood in higher plants. In other eukaryotic models it has been shown that the highly conserved Rho family GTPases play a crucial role in these mechanisms. One distinct subset of...
Resource Type:: Masters Thesis
Full Text:: : identification and Characterization of Seven ROP GTPases in the monocot Zea ma vs. Abstract approved: John

Overwintering of Erysiphe necator and Inoculum Monitoring for Decision Aids

Creator:: Thiessen, Lindsey D.
Abstract:: Grape powdery mildew (Erysiphe necator) causes economic damages to grape worldwide due to the cost of management and injury to berries. Each region where European grapevine (Vitis vinifera) is grown experiences a unique epidemic, and disease prediction models that are based on empirical correlations of weather data to disease fail...
Resource Type:: Dissertation
Full Text:: Lindsey D. Thiessen for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

Creator:: Wright, Carolyn E.
Abstract:: Astragalus diaphanus is a rare plant endemic to the John Day River drainage of north-central Oregon. This species has several interesting features, including the dimorphism of its fruit and its geographical isolation from the two nearest taxonomically related species, which occur in Colorado. This study addressed the species' distribution and...
Resource Type:: Masters Thesis
Full Text:: diaphanus is a rare plant endemic to the John Day River drainage of north-central Oregon. This species has

Characterization of the transition to the progamic phase in Zea mays pollen

Creator:: Smyth, Johanna C.
Abstract:: The transition of mature pollen to the progamic phase represents an important step in the regulation of plant sexual reproduction. The progamic phase encompasses the initiation of pollen tube germination, growth of the pollen tube through the stigma (the silk in maize) and concludes with fertilization of the female gametophyte....
Resource Type:: Dissertation
Full Text:: Abstract approved: ______________________________________________________ John E. Fowler

Molecular phylogenetic analyses of Riccia and Marchantiales

Creator:: Wheeler, John A. (John Allen)
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF John A. Wheeler for the degree of Doctor of Philosophy in

Contracting nucleolar vacuoles in somatic tobacco cells growing in microcultures

Creator:: Johnson, John Morris
Abstract:: Contracting nucleolar vacuoles are a general and consistent feature of somatic tobacco cells growing in microcultures. Nucleolar vacuoles were studied in cells from callus tissues of two single-cell clones, H-196 and H-239, of hybrid tobacco (Nicotiana tabacum X N. glutinosa). Vacuoles periodically contracted either completely or incompletely, apparently releasing a...
Resource Type:: Dissertation
Full Text:: growing in microcultures AN ABSTRACT OF THE THESIS OF John Morris Johnson for the Ph. D. in Botany

ScholarsArchive@OSU

Seeing Genes: Multiscale Phenotyping Reveals Gene Functions in Maize Pollen

The effects of abscisic acid on gene expression during embryogenesis in wheat

The Gac regulon of Pseudomonas fluorescens SBW25

Male gametophyte specific expression helps identify a conserved gene associated with increased pollen fitness

Identification and characterization of seven ROP GTPases in Zea mays

Overwintering of Erysiphe necator and Inoculum Monitoring for Decision Aids

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

Characterization of the transition to the progamic phase in Zea mays pollen

Molecular phylogenetic analyses of Riccia and Marchantiales

Contracting nucleolar vacuoles in somatic tobacco cells growing in microcultures

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