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The molecular mechanism of transforming red light signal to (E)-β-caryophyllene biosynthesis in Arabidopsis

文献类型: 外文期刊

作者: Xu, Chuanjia 1 ; Wang, Xin 3 ; Mehraliyeva, Malakkhanim 2 ; Sun, Jia 2 ; Chen, Fangfang 4 ; Li, Changfu 2 ; Xu, Zhengqin 2 ; Tang, Nan 2 ; Zhang, Yansheng 2 ;

作者机构: 1.Shanghai Univ, Sch Environm & Chem Engn, Shanghai, Peoples R China

2.Shanghai Univ, Synthet Biol Res Ctr, Sch Life Sci, Shanghai Key Lab Bioenergy Crops, Shanghai, Peoples R China

3.Chinese Acad Agr Sci, Key Lab Biol & Genet Improvement Oil Crops, Minist Agr & Rural Affairs, Oil Crops Res Inst, Wuhan, Peoples R China

4.Chinese Acad Sci, CAS Key Lab Plant Germplasm Enhancement & Specialt, Wuhan Bot Garden, Wuhan, Peoples R China

期刊名称:PHYSIOLOGIA PLANTARUM ( 影响因子:3.6; 五年影响因子:5.4 )

ISSN: 0031-9317

年卷期: 2025 年 177 卷 1 期

页码:

收录情况: SCI

摘要: It is known that red light irradiation enhances the biosynthesis of (E)-beta-caryophyllene in plants. However, the underlying mechanism connecting red light to (E)-beta-caryophyllene biosynthesis remains elusive. This study reveals a molecular cascade involving the phyB-PIF4-MYC2 module, which regulates (E)-beta-caryophyllene biosynthesis in response to the red light signal in Arabidopsis thaliana. In this module, phyB positively regulates (E)-beta-caryophyllene biosynthesis under red light, whereas PIF4 negatively regulates it; both regulations require the involvement of MYC2, a transcription factor that can bind directly to the promoter of the TPS21 gene which encodes (E)-beta-caryophyllene synthase. Importantly, protein-protein and protein-DNA interaction assays show that PIF4 reduces the binding affinity of MYC2 to the TPS21 promoter through direct interaction with MYC2. We propose that the phyB-PIF4-MYC2 module represents a universal mechanism linking red light to sesquiterpene biosynthesis in plants.

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