show Abstracthide AbstractSucrose non-fermentation 1 (SNF1) related kinase 1 (SnRK1) is the central energy sensor kinase in plants, and it is a key switch for regulating carbon and nitrogen metabolism. The level of leaf photosynthetic efficiency and the accumulation of carbohydrates are critical to fruit quality, but how PpSnRK1alpha regulates leaf carbon metabolism and light signal response is not clear.