J Integr Plant Biol. ›› 2021, Vol. 63 ›› Issue (3): 438-450.DOI: 10.1111/jipb.13064

Special Issue: Abiotic stress Epigenetics

• Mini Review • Previous Articles     Next Articles

Chromatin remodeling factors regulate environmental stress responses in plants

Ze‐Ting Song1,2, Jian‐Xiang Liu2* and Jia‐Jia Han1,3*   

  1. 1Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Yunnan University, Kunming 650500, China
    2State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310027, China
    3Laboratory of Ecology and Evolutionary Biology, State Key Laboratory for Conservation and Utilization of Bio‐Resources in Yunnan, Yunnan University, Kunming 650500, China

    *Correspondences: Jian‐Xiang Liu (jianxiangliu@zju.edu.cn); Jia‐Jia Han (hanjiajia@ynu.edu.cn, Dr. Han is responsible for the distribution of the materials associated with this article)
  • Received:2020-09-26 Accepted:2020-12-23 Online:2020-01-09 Published:2021-03-01

Abstract: Environmental stress from climate change and agricultural activity threatens global plant biodiversity as well as crop yield and quality. As sessile organisms, plants must maintain the integrity of their genomes and adjust gene expression to adapt to various environmental changes. In eukaryotes, nucleosomes are the basic unit of chromatin around which genomic DNA is packaged by condensation. To enable dynamic access to packaged DNA, eukaryotes have evolved Snf2 (sucrose nonfermenting 2) family proteins as chromatin remodeling factors (CHRs) that modulate the position of nucleosomes on chromatin. During plant stress responses, CHRs are recruited to specific genomic loci, where they regulate the distribution or composition of nucleosomes, which in turn alters the accessibility of these loci to general transcription or DNA damage repair machinery. Moreover, CHRs interplay with other epigenetic mechanisms, including DNA methylation, histone modifications, and deposition of histone variants. CHRs are also involved in RNA processing at the post‐transcriptional level. In this review, we discuss major advances in our understanding of the mechanisms by which CHRs function during plants’ response to environmental stress.

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