OsWR2 recruits HDA704 to regulate the deacetylation of H4K8ac in the promoter of OsABI5 in response to drought stress
文献类型： 外文期刊
作者： Guo, Yalu 1 ; Tan, Yiqing 3 ; Qu, Minghao 4 ; Hong, Kai 3 ; Zeng, Longjun 5 ; Wang, Lei 6 ; Zhuang, Chuxiong 2 ; Qian, Qian 7 ; Hu, Jiang 7 ; Xiong, Guosheng 3 ;
作者机构： 1.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen 518120, Peoples R China
2.South China Agr Univ, Coll Life Sci, Guangdong Lab Lingnan Modern Agr, State Key Lab Conservat & Utilizat Subtrop Agrobio, Guangzhou 510642, Peoples R China
3.Nanjing Agr Univ, Acad Adv Interdisciplinary Studies, Plant Phen Res Ctr, Nanjing 210095, Peoples R China
4.Southwest Univ, Coll Anim Sci & Technol, Chongqing 402460, Peoples R China
5.Yichun Acad Sci, Yinchun 336000, Peoples R China
6.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Shijiazhuang 050022, Peoples R China
7.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310000, Peoples R China
关键词： drought stress; HDA704; histone acetylation; OsABI5; OsWR2; rice
期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：11.4； 五年影响因子：10.1 ）
ISSN： 1672-9072
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Drought stress is a major environmental factor that limits the growth, development, and yield of rice (Oryza sativa L.). Histone deacetylases (HDACs) are involved in the regulation of drought stress responses. HDA704 is an RPD3/HDA1 class HDAC that mediates the deacetylation of H4K8 (lysine 8 of histone H4) for drought tolerance in rice. In this study, we show that plants overexpressing HDA704 (HDA704-OE) are resistant to drought stress and sensitive to abscisic acid (ABA), whereas HDA704 knockout mutant (hda704) plants displayed decreased drought tolerance and ABA sensitivity. Transcriptome analysis revealed that HDA704 regulates the expression of ABA-related genes in response to drought stress. Moreover, HDA704 was recruited by a drought-resistant transcription factor, WAX SYNTHESIS REGULATORY 2 (OsWR2), and co-regulated the expression of the ABA biosynthesis genes NINE-CIS-EPOXYCAROTENOID DIOXYGENASE 3 (NCED3), NCED4, and NCED5 under drought stress. HDA704 also repressed the expression of ABA-INSENSITIVE 5 (OsABI5) and DWARF AND SMALL SEED 1 (OsDSS1) by regulating H4K8ac levels in the promoter regions in response to polyethylene glycol 6000 treatment. In agreement, the loss of OsABI5 function increased resistance to dehydration stress in rice. Our results demonstrate that HDA704 is a positive regulator of the drought stress response and offers avenues for improving drought resistance in rice.
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