高温响应基因MdMYB308抑制苹果花青苷合成OA北大核心CSTPCD

High temperatures suppress anthocyanin synthesis in apples,thereby affecting the fruit's coloration.This study found that the expression of the MdMYB308 gene was strongly induced under high-temperature conditions.Subcellular localization experiments revealed that MdMYB308 is predominantly localized in the cell nucleus.To investigate the function of MdMYB308,we explored it using overexpression and CRISPR/Cas9 gene editing techniques.The results demonstrated that MdMYB308 suppresses the expression of anthocyanin structural genes and anthocyanin synthesis.MdMYB308 plays a significant role in suppressing anthocyanin synthesis under high temperatures and has significant potential for application in breeding heat-tolerant red apples.