Knowledge Management System of Kunming Institute of Botany,CAS
| Arabidopsis SIGMA FACTOR BINDING PROTEIN1 (SIB1) and SIB2 inhibit WRKY75 function in abscisic acid-mediated leaf senescence and seed germination | |
| Zhang,Haiyan; Zhang,Liping; Ji,Yunrui; Jing,Yifen; Li,Lanxin; Chen,Yanli; Wang,Ruling; Zhang,Huimin; Yu,Diqiu; Chen,Ligang | |
| 2022 | |
| 发表期刊 | JOURNAL OF EXPERIMENTAL BOTANY
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| ISSN | 0022-0957 |
| 卷号 | 73期号:1页码:182-196 |
| 摘要 | The plant-specific VQ gene family participates in diverse physiological processes but little information is available on their role in leaf senescence. Here, we show that the VQ motif-containing proteins, Arabidopsis SIGMA FACTOR BINDING PROTEIN1 (SIB1) and SIB2 are negative regulators of abscisic acid (ABA)-mediated leaf senescence. Loss of SIB1 and SIB2 function resulted in increased sensitivity of ABA-induced leaf senescence. In contrast, overexpression of SIB1 significantly delayed this process. Moreover, biochemical studies revealed that SIBs interact with WRKY75 transcription factor. Loss of WRKY75 function decreased sensitivity to ABA-induced leaf senescence, while overexpression of WRKY75 significantly accelerated this process. Chromatin immunoprecipitation assays revealed that WRKY75 directly binds to the promoters of GOLDEN 2-LIKE1(GLK1) and GLK2, to repress their expression. SIBs repress the transcriptional function of WRKY75 and negatively regulate ABA-induced leaf senescence in a WRKY75-dependent manner. In contrast, WRKY75 positively modulates ABA-mediated leaf senescence in a GLK-dependent manner. In addition, SIBs inhibit WRKY75 function in ABA-mediated seed germination. These results demonstrate that SIBs can form a complex with WRKY75 to regulate ABA-mediated leaf senescence and seed germination. |
| 关键词 | Abscisic acid GOLDEN 2-LIKE1/2 leaf senescence seed germination SIGMA FACTOR BINDING PROTEIN WRKY75 TRANSCRIPTION FACTOR WRKY75 MOTIF-CONTAINING PROTEINS SALICYLIC-ACID PLANT SENESCENCE KINASES GENES GROWTH |
| DOI | 10.1093/jxb/erab391 |
| WOS记录号 | WOS:000747681600016 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/73116 |
| 专题 | 中国科学院昆明植物研究所 |
| 作者单位 | 1.Chinese Acad Sci, CAS Key Lab Trop Plant Resources & Sustainable Us, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 2.Chinese Acad Sci, Ctr Econ Bot, Core Bot Gardens, Mengla 666303, Yunnan, Peoples R China 3.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Yunnan Univ, State Key Lab Conservat & Utilizat Bioresources Y, Kunming 650091, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang,Haiyan,Zhang,Liping,Ji,Yunrui,et al. Arabidopsis SIGMA FACTOR BINDING PROTEIN1 (SIB1) and SIB2 inhibit WRKY75 function in abscisic acid-mediated leaf senescence and seed germination[J]. JOURNAL OF EXPERIMENTAL BOTANY,2022,73(1):182-196. |
| APA | Zhang,Haiyan.,Zhang,Liping.,Ji,Yunrui.,Jing,Yifen.,Li,Lanxin.,...&Chen,Ligang.(2022).Arabidopsis SIGMA FACTOR BINDING PROTEIN1 (SIB1) and SIB2 inhibit WRKY75 function in abscisic acid-mediated leaf senescence and seed germination.JOURNAL OF EXPERIMENTAL BOTANY,73(1),182-196. |
| MLA | Zhang,Haiyan,et al."Arabidopsis SIGMA FACTOR BINDING PROTEIN1 (SIB1) and SIB2 inhibit WRKY75 function in abscisic acid-mediated leaf senescence and seed germination".JOURNAL OF EXPERIMENTAL BOTANY 73.1(2022):182-196. |
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