Biotechnology Bulletin ›› 2022, Vol. 38 ›› Issue (7): 1-12.doi: 10.13560/j.cnki.biotech.bull.1985.2022-0071

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Advances in Histone Variants in Plant Epigenetic Regulation

XUE Man-de1,2(), ZHAO Feng-yue1,2, LI Jie1,2, JIANG Dan-hua1,2()   

  1. 1. State Key Laboratory of Plant Genomics,Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Beijing 100101
    2. University of Chinese Academy of Sciences,Beijing 101408
  • Received:2022-01-17 Online:2022-07-26 Published:2022-08-09
  • Contact: JIANG Dan-hua E-mail:xuemande@genetics.ac.cn;dhjiang@genetics.ac.cn

Abstract:

The basic subunit of chromatin is nucleosome that consists of DNA and histone proteins,and it serves as a carrier of genetic and epigenetic information in regulating life activities. Histone variants are related isoforms in the same histone family. In addition to their sequence divergence,their chromatin assembly is done under specific molecular chaperones. The incorporation of histone variants into nucleosomes generates profound impacts on nucleosome property and chromatin activity. Growing studies in plants support a pivotal role of histone variants in chromatin regulation including chromatin structure and maintenance of the epigenetic information,DNA damage repair and transcription regulation,which subsequently impact plant development and environmental response. Here we summarize recent progress on the chromatin locations of plant histone variants,molecular chaperons and their biological functions,and we propose a few new directions for the study of plant histone variants,aiming to provide a reference for deeply studying the histone variant-mediated epigenetic regulation.

Key words: histone variants, plant, epigenetics, chromatin regulation