Effect of heat and drought on phenotypic plasticity and physiology of leaves of Arabidopsis thaliana

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dc.contributor.authorDhakal, Sabitri
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorSchultz, Elizabeth
dc.date.accessioned2017-10-24T01:46:25Z
dc.date.available2017-10-24T01:46:25Z
dc.date.issued2017
dc.degree.levelMastersen_US
dc.description.abstractPlants undergo morphological and physiological acclimation when exposed to heat or drought. I exposed wild type Arabidopsis thaliana and mutants with open or less dense leaf venation to heat and drought and assessed subsequent changes to vein pattern. To also assess the correlation between the vein pattern and photosynthetic gas exchange, I conducted carbon isotope analysis on leaf tissue. Exposure of wild-type Arabidopsis thaliana to heat or drought resulted in a significantly increased vein density together with an increased number of vein meetings and areoles. Exposure of mutants to stress revealed that genes like FKD1 and UNH1 are involved in enabling leaf phenotypic plasticity. 13C/12C isotopic analysis suggested that, whereas wild type is capable of increasing its photosynthetic capacity under drought, the open vein pattern of the fkd1 mutant does not allow proper hydration of leaf resulting in reduced stomatal conductance.en_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/4948
dc.language.isoen_USen_US
dc.proquest.subject0479en_US
dc.proquest.subject0306en_US
dc.proquest.subject0473en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta : University of Lethbridge, Dept. of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectabiotic stressesen_US
dc.subjectArabidopsis thalianaen_US
dc.subjectdrought toleranceen_US
dc.subjectheat toleranceen_US
dc.subjectleaf phenotypic plasticityen_US
dc.subjectleaf vein patternen_US
dc.titleEffect of heat and drought on phenotypic plasticity and physiology of leaves of Arabidopsis thalianaen_US
dc.typeThesisen_US
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