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

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dc.contributor.authorPahari, Shankar
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorSchultz, Elizabeth
dc.date.accessioned2008-09-26T14:55:40Z
dc.date.available2008-09-26T14:55:40Z
dc.date.issued2008
dc.degree.levelMasters
dc.descriptionxii, 76 leaves : ill. ; 29 cm.en
dc.description.abstractAuxin 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.identifier.urihttps://hdl.handle.net/10133/670
dc.language.isoen_USen
dc.publisherLethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2008en
dc.publisher.departmentDepartment of Biological Sciencesen
dc.publisher.facultyArts and Scienceen
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en
dc.subjectDissertations, Academicen
dc.subjectPlants -- Effect of auxin onen
dc.subjectAuxinen
dc.subjectArabidopsisen
dc.titleThe arabidopsis gene Grassy, is required for auxin transport and patterning of leaf vein, shoot and rooten
dc.typeThesisen
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