Asensi-Fabado, M. A., Amtmann, A. and Perrella, G. (2017) Plant responses to abiotic stress: the chromatin context of transcriptional regulation. Biochimica et Biophysica Acta: Gene Regulatory Mechanisms, 1860(1), pp. 106-122. (doi: 10.1016/j.bbagrm.2016.07.015) (PMID:27487458)
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Abstract
The ability of plants to cope with abiotic environmental stresses such as drought, salinity, heat, cold or flooding relies on flexible mechanisms for re-programming gene expression. Over recent years it has become apparent that transcriptional regulation needs to be understood within its structural context. Chromatin, the assembly of DNA with histone proteins, generates a local higher-order structure that impacts on the accessibility and effectiveness of the transcriptional machinery, as well as providing a hub for multiple protein interactions. Several studies have shown that chromatin features such as histone variants and post-translational histone modifications are altered by environmental stress, and they could therefore be primary stress targets that initiate transcriptional stress responses. Alternatively, they could act downstream of stress-induced transcription factors as an integral part of transcriptional activity. A few experimental studies have addressed this ‘chicken-and-egg’ problem in plants and other systems, but to date the causal relationship between dynamic chromatin changes and transcriptional responses under stress is still unclear. In this review we have collated the existing information on concurrent epigenetic and transcriptional responses of plants to abiotic stress, and we have assessed the evidence using a simple theoretical framework of causality scenarios.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Amtmann, Professor Anna and Perrella, Dr Giorgio and Asensi-Fabado, Ms Maria Amparo |
Authors: | Asensi-Fabado, M. A., Amtmann, A., and Perrella, G. |
College/School: | College of Medical Veterinary and Life Sciences > School of Molecular Biosciences |
Journal Name: | Biochimica et Biophysica Acta: Gene Regulatory Mechanisms |
Publisher: | Elsevier |
ISSN: | 1874-9399 |
ISSN (Online): | 1876-4320 |
Published Online: | 31 July 2016 |
Copyright Holders: | Copyright © 2016 The Authors |
First Published: | First published in Biochimica et Biophysica Acta: Gene Regulatory Mechanisms 1860(1): 106-122 |
Publisher Policy: | Reproduced under a Creative Commons License |
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