Skip to Main content Skip to Navigation
Journal articles

Histone Deacetylase HDA9 and WRKY53 Transcription Factor Are Mutual Antagonists in Regulation of Plant Stress Response

Abstract : Epigenetic regulation of gene expression is important for plant adaptation to environmental changes. Previous results showed that Arabidopsis RPD3-like histone deacetylase HDA9 is known to function in repressing plant response to stress in Arabidopsis. However, how HDA9 targets to specific chromatin loci and controls gene expression networks involved in plant response to stress remains largely unclear. Here, we show that HDA9 represses stress tolerance response by interacting with and regulating the DNA binding and transcriptional activity of WRKY53, which functions as a high-hierarchy positive regulator of stress response. We found that WRKY53 is post-translationally modified by lysine acetylation at multiple sites, some of which are removed by HDA9, resulting in inhibition of WRKY53 transcription activity. Conversely, WRKY53 negatively regulates HDA9 histone deacetylase activity. Collectively, our results indicate that HDA9 and WRK53 are reciprocal negative regulators of each other's activities, illustrating how the functional interplay between a chromatin regulator and a transcription factor regulates stress tolerance in plants.
Document type :
Journal articles
Complete list of metadata

https://hal.inrae.fr/hal-03217213
Contributor : Christopher Lallemant <>
Submitted on : Tuesday, May 4, 2021 - 4:45:33 PM
Last modification on : Thursday, July 1, 2021 - 11:02:47 AM

Links full text

Identifiers

Citation

Yu Zheng, Jingyu Ge, Chun Bao, Wenwen Chang, Jingjing Liu, et al.. Histone Deacetylase HDA9 and WRKY53 Transcription Factor Are Mutual Antagonists in Regulation of Plant Stress Response. Molecular Plant, Cell Press/Oxford UP, 2020, 13 (4), pp.598-611. ⟨10.1016/j.molp.2019.12.011⟩. ⟨hal-03217213⟩

Share

Metrics

Record views

16