The OsbHLH002/OsICE1-OSH1 module orchestrates secondary cell wall formation in rice

文献类型： 外文期刊

第一作者： Chen, Ying

作者： Chen, Ying;Qi, Haoyue;Yang, Lijia;Xu, Liang;Wang, Jiaxuan;Guo, Jiazhuo;Zhang, Liang;Tan, Yuanyuan;Pan, Ronghui;Shu, Qingyao;Song, Shiyong;Chen, Ying;Pan, Ronghui;Chen, Ying;Qian, Qian

作者机构：

期刊名称：CELL REPORTS （ 影响因子：8.8； 五年影响因子：9.9 ）

ISSN： 2211-1247

年卷期： 2023 年 42 卷 7 期

页码：

收录情况： SCI

摘要： Transcriptional regulation of secondary cell wall (SCW) formation is strictly controlled by a complex network of transcription factors in vascular plants and has been shown to be mediated by a group of NAC master switches. In this study, we show that in a bHLH transcription factor, OsbHLH002/OsICE1, its loss-of-function mutant displays a lodging phenotype. Further results show that OsbHLH002 and Oryza sativa homeobox1 (OSH1) interact and share a set of common targets. In addition, the DELLA protein SLENDER RICE1, rice ortholog of KNOTTED ARABIDOPSIS THALIANA7, and OsNAC31 interact with OsbHLH002 and OSH1 and regulate their binding capacity on OsMYB61, a key regulatory factor in SCW development. Collectively, our results indicate OsbHLH002 and OSH1 as key regulators in SCW formation and shed light on molecular mechanisms of how active and repressive factors precisely orchestrate SCW synthesis in rice, which may provide a strategy for manipulating plant biomass production.

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