JA modulates phytochrome a signaling via repressing FHY3 activity by JAZ proteins

文献类型: 外文期刊

第一作者: Liu, Yang

作者: Liu, Yang;Wang, Haiyang;Wang, Haiyang

作者机构:

关键词: FHY3; JAZ1; FHY1; FHL; phyA

期刊名称:PLANT SIGNALING & BEHAVIOR ( 影响因子:2.247; 五年影响因子:2.369 )

ISSN: 1559-2316

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收录情况: SCI

摘要: Phytochrome A (phyA) is the primary photoreceptor mediating various plant responses to far-red (FR) light. The defense-related phytohorme jasmonic acid (JA) has been shown recently to play a role in regulating phyA-mediated FR signaling. However, the detailed molecular mechanisms governing phyA- and JA-mediated signaling cross talks are still not well understood. Here, we uncover a molecular cascade in which JAZ1 inactivates phyA signaling through repressing the transcriptional activity of FHY3 on FHY1 and FHL. Furthermore, we demonstrate that the expression levels of FHY1 and FHL, and some FR response genes are reduced in the coi1 mutant. These findings unveil a previously unrecognized mechanism whereby JA modulates phyA signaling through repressing the activities of FHY3 by JAZs.

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