MYB、bHLH、WD40调控兰科植物花色花香研究进展

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Abstract： The MYB，bHLH，WD4O transcriptional factors functions asan evolutionarilyconserved master regulatorof diverse biological processes inhigher plants，with particularlycriticalroles insecondarymetabolite biosynthesis （including anthocyanin and proanthocyanidin biosynthesis），as well as in epidermal cel morphogenesis （including petal epidermal cell differentiation and trichome formation），along with environmental responses. Orchidaceae is renowned for its exceptional diversity in floral characteristics，whichare key to attracting pollinators atraction and ensuring reproductive successThese traits underpin the significant omamental and economic value oforchids.Consequently，elucidating the molecular networks that govern floral color and scent in orchids has emergedas a major research priority in this family.This review systematically summarizes recent advances regarding the pivotal role of the MBW complex in regulating floral pigmentation and scent production in orchids.We mainly focus on the biosynthetic pathways of major floral pigments and aromatic volatiles，together with the molecular mechanisms by which the MBW complex regulates the expression of structural and regulatory genes.By providing atheoretical framework forunderstanding the molecular basis ofcomplex floral traits，this overview offers valuable perspectives into molecular breeding and genetic enhancement of ornamental orchids.

Keywords：MYB;bHLH;WD40;Orchidaceae;flowercolor;floral scent

花色与花香是被子植物花部性状的重要组成部分，不仅决定其观赏与经济价值，还在吸引传粉者、促进有性繁殖及维系种群多样性方面发挥关键作用。（剩余30445字）