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The SWI/SNF ATP-Dependent Chromatin Remodeling Complex in Arabidopsis Responds to Environmental Changes in Temperature-Dependent Manner

Gratkowska-Żmuda, D.M. and Kubala, Szymon and Sarnowska, E.A. and Cwiek, P. and Oksińska, Paulina and Steciuk, J. and Rolicka, A.T. and Zaborowska, Magdalena and Bucior, E. and Maassen, Anna and Franzen, R. and Koncz, C. and Sarnowski, T.J. (2020) The SWI/SNF ATP-Dependent Chromatin Remodeling Complex in Arabidopsis Responds to Environmental Changes in Temperature-Dependent Manner. International Journal of Molecular Sciences, 21 (3). pp. 1-19. ISSN 1422-0067

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Official URL: https://www.mdpi.com/1422-0067/21/3/762

Abstract

SWI/SNF ATP-dependent chromatin remodeling complexes (CRCs) play important roles in the regulation of transcription, cell cycle, DNA replication, repair, and hormone signaling in eukaryotes. The core of SWI/SNF CRCs composed of a SWI2/SNF2 type ATPase, a SNF5 and two of SWI3 subunits is sufficient for execution of nucleosome remodeling in vitro. The Arabidopsis genome encodes four SWI2/SNF2 ATPases, four SWI3, a single SNF5 and two SWP73 subunits. Genes of the core SWI/SNF components have critical but not fully overlapping roles during plant growth, embryogenesis, and sporophyte development. Here we show that the Arabidopsis swi3c mutant exhibits a phenotypic reversion when grown at lower temperature resulting in partial restoration of its embryo, root development and fertility defects. Our data indicates that the swi3c mutation alters the expression of several genes engaged in low temperature responses. The location of SWI3C-containing SWI/SNF CRCs on the ICE1, MYB15 and CBF1 target genes depends on the temperature conditions, and the swi3c mutation thus also influences the transcription of several cold-responsive (COR) genes. These findings, together with genetic analysis of swi3c/ice1 double mutant and enhanced freezing tolerance of swi3c plants illustrate that SWI/SNF CRCs contribute to fine-tuning of plant growth responses to different temperature regimes.

Item Type:Article
Uncontrolled Keywords:SWI3C; SWI/SNF; cold response; ATP-dependent chromatin remodeling; transcriptional control of gene expression
Subjects:Q Science > QH Natural history > QH301 Biology
Q Science > QH Natural history > QH426 Genetics
Q Science > QK Botany
Q Science > QP Physiology
Divisions:Department of Protein Biosynthesis
ID Code:1826
Deposited By: PhD Szymon Kubala
Deposited On:03 Feb 2020 09:46
Last Modified:03 Feb 2020 09:46

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