AtWRKY75 positively regulates age-triggered leaf senescence through gibberellin pathway
文献类型：期刊论文
| 作者 | Zhang,Haiyan; Zhang,Liping; Wu,Songguo; Chen,Yanli; Yu,Diqiu; Chen,Ligang |
| 刊名 | PLANT DIVERSITY
 |
| 出版日期 | 2021 |
| 卷号 | 43期号:4页码:331-340 |
| 关键词 | WRKY75 Leaf senescence GA DELLAs TRANSCRIPTION FACTOR WRKY75 SALICYLIC-ACID PLANT SENESCENCE ARABIDOPSIS EXPRESSION STRESS PROTEINS GENES |
| ISSN号 | 2096-2703 |
| DOI | 10.1016/j.pld.2020.10.002 |
| 英文摘要 | WRKY transcription factors play essential roles during leaf senescence. However, the mechanisms by which they regulate this process remains largely unknown. Here, we identified the transcription factor WRKY75 as a positive regulator during leaf senescence. Mutations of WRKY75 caused a delay in age-triggered leaf senescence, whereas overexpression of WRKY75 markedly accelerated this process. Expression of senescence-associated genes (SAGs) was suppressed in WRKY75 mutants but increased in WRKY75-overexpressing plants. Further analysis demonstrated that WRKY75 directly associates with the promoters of SAG12 and SAG29, to activate their expression. Conversely, GAI and RGL1, two DELLA proteins, can suppress the WRKY75-mediated activation, thereby attenuating SAG expression during leaf senescence. Genetic analyses showed that GAI gain-of-function or RGL1 overexpression can partially rescue the accelerated senescence phenotype caused by WRKY75 overexpression. Furthermore, WRKY75 can positively regulate WRKY45 expression during leaf senescence. Our data thus imply that WRKY75 may positively modulate age-triggered leaf senescence through the gibberellin-mediated signaling pathway. Copyright (C) 2020 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. |
| WOS记录号 | WOS:000687818400010 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/73117]  |
| 专题 | 中国科学院昆明植物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China 2.Yunnan Univ, State Key Lab Conservat & Utilizat Bioresources Y, Kunming 650091, Yunnan, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Trop Plant Resources & Sustainable Us, Xishuangbanna Trop Bot Garden, Kunming 650223, Yunnan, Peoples R China 4.Chinese Acad Sci, Ctr Econ Bot, Core Bot Gardens, Mengla 666303, Yunnan, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang,Haiyan,Zhang,Liping,Wu,Songguo,et al. AtWRKY75 positively regulates age-triggered leaf senescence through gibberellin pathway[J]. PLANT DIVERSITY,2021,43(4):331-340. |
| APA | Zhang,Haiyan,Zhang,Liping,Wu,Songguo,Chen,Yanli,Yu,Diqiu,&Chen,Ligang.(2021).AtWRKY75 positively regulates age-triggered leaf senescence through gibberellin pathway.PLANT DIVERSITY,43(4),331-340. |
| MLA | Zhang,Haiyan,et al."AtWRKY75 positively regulates age-triggered leaf senescence through gibberellin pathway".PLANT DIVERSITY 43.4(2021):331-340. |
入库方式： OAI收割
来源：昆明植物研究所
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