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BLISTER promotes seed maturation and fatty acid biosynthesis by interacting with WRINKLED1 to regulate chromatin dynamics in Arabidopsis

文献类型： 外文期刊

作者： Huang, Ruihua 1 ; Liu, Mengling 1 ; Gong, Guanping 1 ; Wu, Pingzhi 2 ; Bai, Mei 3 ; Qin, Hongting 1 ; Wang, Guohe 1 ; Liao, Huimei 1 ; Wang, Xiaoxiu 1 ; Li, Yanqun 3 ; Wu, Hong 3 ; Wang, Xiaojing 1 ; Yang, Chengwei 1 ; Schubert, Daniel 4 ; Zhang, Shengchun 1 ;

作者机构： 1.South China Normal Univ, Coll Life Sci, Guangdong Key Lab Biotechnol Plant Dev, Guangzhou 510631, Peoples R China

2.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Key Lab South Subtrop Fruit Biol & Genet Resource, Minist Agr, Guangzhou 510640, Peoples R China

3.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangzhou 510642, Peoples R China

4.Free Univ Berlin, Inst Biol, D-14195 Berlin, Germany

期刊名称：PLANT CELL （ 影响因子：12.085； 五年影响因子：12.796 ）

ISSN： 1040-4651

年卷期： 2022 年 34 卷 6 期

页码：

收录情况： SCI

摘要： LISTER promotes seed maturation and activates fatty acid biosynthesis genes by linking WRINKLED1 to chromatin remodeling factors and by regulating nucleosomal occupancy and histone modifications. WRINKLED1 (WRI1) is an important transcription factor that regulates seed oil biosynthesis. However, how WRI1 regulates gene expression during this process remains poorly understood. Here, we found that BLISTER (BLI) is expressed in maturing Arabidopsis thaliana seeds and acts as an interacting partner of WRI1. bli mutant seeds showed delayed maturation, a wrinkled seed phenotype, and reduced oil content, similar to the phenotypes of wri1. In contrast, BLI overexpression resulted in enlarged seeds and increased oil content. Gene expression and genetic analyses revealed that BLI plays a role in promoting the expression of WRI1 targets involved in fatty acid biosynthesis and regulates seed maturation together with WRI1. BLI is recruited by WRI1 to the AW boxes in the promoters of fatty acid biosynthesis genes. BLI shows a mutually exclusive interaction with the Polycomb-group protein CURLY LEAF (CLF) or the chromatin remodeling factor SWITCH/SUCROSE NONFERMENTING 3B (SWI3B), which facilitates gene expression by modifying nucleosomal occupancy and histone modifications. Together, these data suggest that BLI promotes the expression of fatty acid biosynthesis genes by interacting with WRI1 to regulate chromatin dynamics, leading to increased fatty acid production. These findings provide insights into the roles of the WRI1-BLI-CLF-SWI3B module in mediating seed maturation and gene expression.

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