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The arabidopsis gene Grassy, is required for auxin transport and patterning of leaf vein, shoot and root

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dc.contributor.advisor Schultz, Elizabeth
dc.contributor.author Pahari, Shankar
dc.contributor.author University of Lethbridge. Faculty of Arts and Science
dc.date.accessioned 2008-09-26T14:55:40Z
dc.date.available 2008-09-26T14:55:40Z
dc.date.issued 2008
dc.identifier.uri http://hdl.handle.net/10133/670
dc.description xii, 76 leaves : ill. ; 29 cm. en
dc.description.abstract Auxin controls a range of growth related characteristics by a mechanism dependent upon polar auxin transport. We have identified a leaf vein patterning mutant that shows a simple first leaf vein pattern. The veins are often non-meeting and form somewhat parallel to one another. The leaves are narrow and pointed so that the overall leaf phenotype is reminiscent of grass leaves; hence the mutant name grassy (gsy). A range of shoot and root characteristics are also altered in gsy plants. Compared to wild type, gsy plants have shorter primary roots with reduced numbers of lateral roots and increased numbers of longer root hairs. Upon gravitropic stimulation, the root tip bends slightly away from the normal vector. As well, gsy plants produce an inflorescence with altered internode elongation and branching pattern. The intensity of the auxin responsive reporter gene DR5::GUS is unchanged in both roots and developing leaves of gsy, however, it shows subtle differences to the wild type DR5:GUS expression pattern. Finally, gsy leaf and root phenotypes are more sensitive to low doses of the auxin efflux inhibitor NPA and external auxin 2, 4-D. We suggest that this overall pattern is consistent with defects in auxin transport. en
dc.language.iso en_US en
dc.publisher Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2008 en
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en
dc.subject Dissertations, Academic en
dc.subject Plants -- Effect of auxin on en
dc.subject Auxin en
dc.subject Arabidopsis en
dc.subject Electronic dissertations en
dc.title The arabidopsis gene Grassy, is required for auxin transport and patterning of leaf vein, shoot and root en
dc.type Thesis en
dc.publisher.faculty Arts and Science en
dc.publisher.department Department of Biological Sciences en

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