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High density stress response in plants and the role of anthocyanin biosynthesis under adverse environmental conditions

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dc.contributor.advisor Colasanti, Joseph
dc.contributor.advisor Rothstein, Steven Misyura, Maksym 2014-01-30T15:25:13Z 2014-01-30T15:25:13Z 2014-01 2014-01-21 2014-01-30
dc.description.abstract Plant stress significantly contributes to crop yield losses globally. Research on physiological responses of plants to stress provides potential targets for future crop improvement. The work presented here examines physiological changes of high density stress response and the role of the anthocyanin biosynthetic pathway in plant growth and development under nitrogen limitation and high light conditions. Physiological changes in response to high density stress in plants were examined using multiple approaches such as global transcriptome and metabolite analysis to identify potentially novel means by which the plants deal with high density stress. In addition, production of anthocyanin pigment and its flavonoid precursors were examined to identify crucial steps in the anthocyanin biosynthesis pathway for normal plant growth and development and their role in tolerance to high light and nitrogen stress. The work presented here demonstrates the involvement of ethylene production in high density stress response in rice, as well as highlights the importance of the first two biochemical steps of the flavonoid biosynthesis pathway in plant growth and development. Better understanding of plant stress response is not only fundamental to plant biology, but also has direct implications for agriculture. Hopefully, future studies will determine whether these findings can be applied in crop improvement to help with enhancing yields of staple crops. en_US
dc.description.sponsorship NSERC, Ontario Research Fund en_US
dc.language.iso en en_US
dc.subject plant stress en_US
dc.subject gene expression en_US
dc.subject metabolite en_US
dc.subject anthocyanin en_US
dc.subject rice en_US
dc.subject planting density en_US
dc.title High density stress response in plants and the role of anthocyanin biosynthesis under adverse environmental conditions en_US
dc.type Thesis en_US Molecular and Cellular Biology en_US Doctor of Philosophy en_US Department of Molecular and Cellular Biology en_US
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