The chromatin remodelling ATPase BRAHMA interacts with GATA-family transcription factor GNC to regulate flowering time in Arabidopsis
文献类型： 外文期刊
作者： Yang, Jie 1 ; Xu, Yingchao 1 ; Wang, Jianhao 3 ; Gao, Sujuan 4 ; Huang, Yisui 1 ; Hung, Fu-Yu 6 ; Li, Tao 7 ; Li, Qing 8 ; Yue, Lin 3 ; Wu, Keqiang 6 ; Yang, Songguang 1 ;
作者机构： 1.Chinese Acad Sci, Key Lab South China Agr Plant Mol Anal & Genet Im, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou 510650, Peoples R China
2.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Guangzhou Univ, Innovat Ctr Mol Genet & Evolut, Sch Life Sci, Guangzhou, Peoples R China
4.Zhongkai Univ Agr & Engn, Coll Light Ind & Food Sci, Guangzhou 510225, Peoples R China
5.Zhongkai Univ Agr & Engn, Acad Contemporary Agr Engn Innovat, Guangzhou 510225, Peoples R China
6.Natl Taiwan Univ, Inst Plant Biol, Taipei 106, Taiwan
7.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangzhou, Peoples R China
8.Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, Guangdong Prov Key Lab Crop Germplasm Resources P, Guangzhou, Peoples R China
关键词： BRAHMA (BRM); chromatin remodelling; flowering time; GNC (GATA; NITRATE-INDUCIBLE; CARBON METABOLISM INVOLVED); SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1)
期刊名称：JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：7.298； 五年影响因子：8.291 ）
ISSN： 0022-0957
年卷期： 2022 年 73 卷 3 期
页码：
收录情况： SCI
摘要： BRAHMA (BRM) is the ATPase of the SWItch/Sucrose Non-Fermentable (SWI/SNF) chromatin remodelling complex, which is indispensable for transcriptional inhibition and activation, associated with vegetative and reproductive development in Arabidopsis thaliana. Here, we show that BRM directly binds to the chromatin of SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1), which integrates multiple flowering signals to regulate floral transition, leading to flowering. In addition, genetic and molecular analysis showed that BRM interacts with GNC (GATA, NITRATE-INDUCIBLE, CARBON METABOLISM INVOLVED), a GATA transcription factor that represses flowering by directly repressing SOC1 expression. Furthermore, BRM is recruited by GNC to directly bind to the chromatin of SOC1. The transcript level of SOC1 is elevated in brm-3, gnc, and brm-3/gnc mutants, which is associated with increased histone H3 lysine 4 tri-methylation (H3K4Me3) but decreased DNA methylation. Taken together, our results indicate that BRM associates with GNC to regulate SOC1 expression and flowering time. The chromatin remodelling ATPase BRAHMA associates with the GATA-family transcription factor GNC to directly repress SOC1expression by decreasing H3K4Me3 and increasing DNA methylation at the SOC1locus during flowering.
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