Roles of Potential Plant Hormones and Transcription Factors in Controlling Leaf Senescence and Drought Tolerance

Overview

Journal Protoplasma

Publisher Springer

Specialty Biology

Date 2018 Oct 13

PMID 30311054

Citations 39

Authors

Sumira Jan

Nazia Abbas

Muhammad Ashraf

Parvaiz Ahmad

Affiliations

Soon will be listed here.

Abstract

Plant leaves offer an exclusive windowpane to uncover the changes in organs, tissues, and cells as they advance towards the process of senescence and death. Drought-induced leaf senescence is an intricate process with remarkably coordinated phases of onset, progression, and completion implicated in an extensive reprogramming of gene expression. Advancing leaf senescence remobilizes nutrients to younger leaves thereby contributing to plant fitness. However, numerous mysteries remain unraveled concerning leaf senescence. We are not still able to correlate leaf senescence and drought stress to endogenous and exogenous environments. Furthermore, we need to decipher how molecular mechanisms of the leaf senescence and levels of drought tolerance are advanced and how is the involvement of SAGs in drought tolerance and plant fitness. This review provides the perspicacity indispensable for facilitating our coordinated point of view pertaining to leaf senescence together with inferences on progression of whole plant aging. The main segments discussed in the review include coordination between hormonal signaling, leaf senescence, drought tolerance, and crosstalk between hormones in leaf senescence regulation.

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