Interplay between ARABIDOPSIS Gβ and WRKY transcription factors differentiates environmental stress responses

编号 040036502

推送时间 20221017

研究领域 森林培育 

年份 2022 

类型 期刊 

语种 英语

标题 Interplay between ARABIDOPSIS Gβ and WRKY transcription factors differentiates environmental stress responses

来源期刊 Plant Physiology

期 第365期

发表时间 20220624

关键词 Arabidopsis thaliana;  stress responses;  ABA;  WRKY;  abiotic stress;  AGB1;  Gene; 

摘要 Different environmental stresses often evoke similar physiological disorders such as growth retardation; however, specific consequences reported among individual stresses indicate potential mechanisms to distinguish different stress types in plants. Here, we examined mechanisms to differentiate between stress types in Arabidopsis (Arabidopsis thaliana). Gene expression patterns recapitulating several abiotic stress responses suggested abscisic acid (ABA) as a mediator of the common stress response, while stress type-specific responses were related to metabolic adaptations. Transcriptome and metabolome analyses identified Arabidopsis Gβ (AGB1) mediating the common stress-responsive genes and primary metabolisms under nitrogen excess. AGB1 regulated the expressions of multiple WRKY transcription factors. Gene Ontology and mutant analyses revealed different roles among WRKYs: WRKY40 is involved in ABA and common stress responses, while WRKY75 regulates metabolic processes. The AGB1–WRKY signaling module controlled developmental plasticity in roots under nitrogen excess. Signal transmission from AGB1 to a selective set of WRKYs would be essential to evoke unique responses to different types of stresses.

服务人员 孙小满

服务院士 尹伟伦

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