The relationship between plant hormones and cuticular wax

作者：Huai‐Na Gao, Haitao Liu, Mengru Li, Si-Ji Fang, Rui-Han Qi, Shunfeng Ge, Yuanyuan Li, Han Jiang · 发表于：Plant Hormones · 年份：2025 · DOI：10.48130/ph-0025-0023 · 被引用次数：1 · 研究领域：Plant Surface Properties and Treatments、Plant Physiology and Cultivation Studies、Lipid metabolism and biosynthesis

Plant cuticular wax is a hydrophobic lipid complex composed of very-long-chain fatty acids (VLCFAs) and their derivatives. It serves as a physical barrier against drought and pathogens, and also modulates agronomic traits such as fruit glossiness and postharvest preservation. The biosynthesis of wax involves sequential stages, including de novo fatty acid synthesis and VLCFA elongation, relying on key genes such as β -ketoacyl-CoA synthase (KCSs ) and ECERIFERUM1( CER1 ). Abscisic acid (ABA), ethylene (ETH), gibberellins (GA), salicylic acid (SA), jasmonic acid (JA), and brassinosteroids (BRs) can regulate cuticular wax through a network of metabolic association, transcriptional crosstalk, and signal interaction. Metabolically, JA competes with wax for this precursor C16/C18 acyl-CoA. Transcriptionally, target conserved transcription Factors (TFs) such as MYB96 and BZR1, at the signal level, intersect at nodes like DELLA proteins. Each hormone exhibits differentiated functions, such as ABA for stress resistance, and ETH for fruit development. While individual hormone pathways have been clarified, gaps remain in understanding multi-hormone crosstalk and field application stability. This work provides targets for crop improvement.