A Dual-Function Transcription Factor, AtYY1, Is a Novel Negative Regulator of the Arabidopsis ABA Response Network

文献类型： 外文期刊

第一作者： Li, Tian

作者： Li, Tian;Wu, Xiu-Yun;Li, Hui;Song, Jian-Hui;Liu, Jin-Yuan;Li, Tian;Li, Hui

作者机构：

关键词： AtYY1;ABA response;negative regulator;ABR1;ABI4

期刊名称：MOLECULAR PLANT （ 影响因子：13.164； 五年影响因子：16.357 ）

ISSN： 1674-2052

年卷期： 2016 年 9 卷 5 期

页码：

收录情况： SCI

摘要： Abscisic acid (ABA) plays crucial roles in plant growth and development, as well as in response to various environmental stresses. To date, many regulatory genes involved in the ABA response network have been identified; however, their roles have remained to be fully elucidated. In this study, we identified AtYY1, an Arabidopsis homolog of the mammalian C2H2 zinc-finger transcription factor Yin Yang 1 (YY1), as a novel negative regulator of the ABA response. AtYY1 is a dual-function transcription factor with both repression and activation domains. The expression of AtYY1 was induced by ABA and stress conditions including high salt and dehydration. The yy1 mutant was more sensitive to ABA and NaCl than the wild-type, while overexpressing AtYY1 plants were less sensitive. AtYY1 loss also enhanced ABA-induced stomatal closing and drought resistance. Moreover, AtYY1 can bind the ABA REPRESSOR1 (ABR1) promoter and directly upregulate ABR1 expression, as well as negatively regulate ABA-and salt-responsive gene expression. Additional analysis indicated that ABA INSENSITIVE4 (ABI4) might positively regulate AtYY1 expression and that ABR1 can antagonize this regulation. Our findings provide direct evidence that AtYY1 is a novel negative regulator of the ABA response network and that the ABI4-AtYY1-ABR1 regulatory pathway may fine-tune ABA-responsive gene expression in Arabidopsis.

分类号：

  • 相关文献

[1]A Casein Kinase II Phosphorylation Site in AtYY1 Affects Its Activity, Stability, and Function in the ABA Response. Wu, Xiu-Yun,Li, Tian. 2017

[2]The roles of two transcription factors, ABI4 and CBFA, in ABA and plastid signalling and stress responses. Feng, Ling-Yang,Yuan, Shu,Cheng, Jian,Tang, He,Xu, Fei,Zhu, Feng,Zhao, Zhong-Yi,Lin, Hong-Hui,Yuan, Ming,Chen, Yang-Er,Wang, Jian-Hui.

[3]Abscisic Acid Antagonizes Ethylene Production through the ABI4-Mediated Transcriptional Repression of ACS4 and ACS8 in Arabidopsis. Dong, Zhijun,Tang, Saijun,Dong, Zhijun,Yu, Yanwen,Li, Shenghui,Wang, Juan,Huang, Rongfeng,Dong, Zhijun,Wang, Juan,Huang, Rongfeng. 2016

[4]A Rice OsAP23, Functioning as an AP2/ERF Transcription Factor, Reduces Salt Tolerance in Transgenic Arabidopsis. Zhuang, Jing,Wang, Feng,Xiong, Ai-Sheng,Jiang, Hai-Hua,Peng, Ri-He,Yao, Quan-Hong.

[5]HbMADS4, a MADS-box Transcription Factor from Hevea brasiliensis, Negatively Regulates HbSRPP. Li, Hui-Liang,Wei, Li-Ran,Guo, Dong,Wang, Ying,Zhu, Jia-Hong,Chen, Xiong-Ting,Peng, Shi-Qing. 2016

[6]Mutation of the rice narrow leaf1 gene, which encodes a novel protein, affects vein patterning and polar auxin transport. Qi, Jing,Bu, Qingyun,Li, Shuyu,Chen, Qian,Sun, Jiaqiang,Liang, Wenxing,Zhou, Yihua,Chu, Chengcai,Chen, Jinfeng,Chen, Mingsheng,Li, Chuanyou,Qian, Qian,Qi, Jing,Li, Shuyu,Chen, Qian,Liang, Wenxing,Li, Xugang,Ren, Fugang,Palme, Klaus,Li, Xugang,Ren, Fugang,Palme, Klaus,Zhao, Bingran.

作者其他论文 更多>>

微信小程序