Salicylic acid regulates biosynthesis of floral fragrance (E)-β-farnesene via NPR3-WRKY1 module in chrysanthemum.

ABSTRACT: Floral fragrance is essential for the attraction of pollinators and responses to biotic and abiotic stresses. It also enhances the quality and economic value of plants. Phytohormones, acting as key signaling molecules, are crucial roles in regulating plant growth and development. However, the molecular mechanisms underlying the biosynthesis of fragrance-related volatiles and their crosstalk with other endogenous signals within plants remain largely unknown. Here, we identified a sesquiterpene synthase gene, CmEβFS, in chrysanthemum, which encodes a catalytic enzyme responsible for synthesizing the key fragrance-related compound (E)-β-farnesene. We demonstrated that CmEβFS is negatively regulated by CmWRKY1, thereby inhibiting (E)-β-farnesene biosynthesis. Furthermore, CmWRKY1 interacts wit

SUBMITTER: Wang Z 

PROVIDER: S-EPMC12412252 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature