The 3R-MYB transcription factor VvMYB3R5 regulates Colletotrichum viniferum resistance through affecting proanthocyanidin synthesis in grapevine.
The discovery of this VvMYB3R5-VvLARs module provides new insights into how plants coordinate metabolic defense through transcriptional reprogramming and offers a distinct genetic resource beyond conventional MYB targets for molecular breeding of disease-resistant grapes and potentially other crops.