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

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Title: High density stress response in plants and the role of anthocyanin biosynthesis under adverse environmental conditions
Author: Misyura, Maksym
Department: Department of Molecular and Cellular Biology
Program: Molecular and Cellular Biology
Advisor: Colasanti, JosephRothstein, Steven
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.
Date: 2014-01
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