Abscisic acid negatively regulates the Polycomb-mediated H3K27me3 through the PHD-finger protein, VIL1

编号 040035005

推送时间 20220704

研究领域 森林培育 

年份 2022 

类型 期刊 

语种 英语

标题 Abscisic acid negatively regulates the Polycomb-mediated H3K27me3 through the PHD-finger protein, VIL1

来源期刊 New Phytologist

期 第350期

发表时间 20220411

关键词 Arabidopsis;  PRC2;  VIL1;  abscisic acid (ABA);  drought tolerance;  germination.; 

摘要 Polycomb dictates developmental programs in higher eukaryotes, including flowering plants. A phytohormone, abscisic acid (ABA), plays a pivotal role in seed and seedling development and mediates responses to multiple environmental stresses, such as salinity and drought.
In this study, we show that ABA affects the Polycomb Repressive Complex 2 (PRC2)-mediated Histone H3 Lys 27 trimethylation (H3K27me3) through VIN3-LIKE1/VERNALIZATION 5 (VIL1/VRN5) to fine-tune the timely repression of ABSCISIC ACID INSENSITIVE 3 (ABI3) and ABSCISIC ACID INSENSITIVE 4 (ABI4) in Arabidopsis thaliana.
vil1 mutants exhibit hypersensitivity to ABA during early seed germination and show enhanced drought tolerance.
Our study revealed that the ABA signaling pathway utilizes a facultative component of the chromatin remodeling complex to demarcate the level of expression of ABA-responsive genes.

服务人员 孙小满

服务院士 尹伟伦

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