The diverse and unanticipated roles of Histone deacetylase 9 in coordinating plant development and environmental acclimation

de Rooij, P. G.H., Perrella, G., Kaiserli, E. and van Zanten, M. (2020) The diverse and unanticipated roles of Histone deacetylase 9 in coordinating plant development and environmental acclimation. Journal of Experimental Botany, 71(20), pp. 6211-6225. (doi: 10.1093/jxb/eraa335) (PMID:32687569) (PMCID:PMC7586748)

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Abstract

Plants tightly control gene transcription to adapt to environmental conditions and steer growth and development. Different types of epigenetic modifications are instrumental in this. In recent years, an important role for the chromatin modifying RPD3/HDA1 class I HDAC HISTONE DEACETYLASE 9 (HDA9) emerged in the regulation of a multitude of plant traits and responses. HDACs are widely considered transcriptional repressors and are typically part of multiprotein complexes containing co-repressors, DNA and histone binding proteins. By catalyzing the removal of acetyl groups from lysine residues of histone protein tails, HDA9 indeed negatively controls gene expression in many cases, in concert with interacting proteins such as POWERDRESS (PWR), HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENES 15 (HOS15), WRKY53, ELONGATED HYPOCOTYL 5 (HY5), ABA INSENSITIVE 4 (ABI4) and EARLY FLOWERING 3 (ELF3). However, HDA9 activity has also been directly linked to transcriptional activation. In addition, following the recent breakthrough discovery of mutual negative feedback regulation between HDA9 and its interacting WRKY-domain transcription factor WRKY53, swift progress in gaining understanding of HDA9 biology is expected. In this review, we summarize knowledge on this intriguing versatile – and long underrated – protein and propose novel leads to further unravel HDA9-governed molecular networks underlying plant development and environmental biology.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Perrella, Dr Giorgio and Kaiserli, Dr Eirini
Authors: de Rooij, P. G.H., Perrella, G., Kaiserli, E., and van Zanten, M.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
Journal Name:Journal of Experimental Botany
Publisher:Oxford University Press
ISSN:0022-0957
ISSN (Online):1460-2431
Published Online:20 July 2020
Copyright Holders:Copyright © 2020 The Authors
First Published:First published in Journal of Experimental Botany 71(20): 6211-6225
Publisher Policy:Reproduced under a Creative Commons License

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