MdKIM1-MdMYB306 enhances apple resistance to Cytospora mali via brassinosteroid biosynthesis under sufficient potassium status.
Potassium (K) supplementation enhances apple (Malus ×domestica) resistance to Cytospora mali, thereby reducing apple Cytospora canker occurrence in the field. Nevertheless, the molecular mechanisms underlying this K-enhanced resistance remain largely unelucidated. Here, we found that brassinosteroid (BR) biosynthesis w...