The Mechanism of Leaf Senescence in Tobacco

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Abstract:

Leaf senescence is the final stage of plant development. Senescence also is a complex and highly regulated process that involves a decline in photosynthesis, dismantling of chloroplasts, and degradation of macromolecules such as proteins, nucleic acids, and lipids. This review mainly introduces the process of leaf senescence through leaf senescence pathway in three parts: initiation, degeneration, and terminal. To sort out the tobacco-related genes change that show increased or decreased expression during the leaf senescence. Moreover, endogenous hormones, such as cytokinins, ethylene, and abscisic acid, play the vital role during the leaf senescence. At the same time, many protein degradation, chlorophyll breakdown, and nigtrogen remobilization in the regulation of senescence are discussed.

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Advanced Materials Research (Volumes 524-527)

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2211-2217

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May 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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