TMT‐MS/MS proteomic analysis of the carbohydrate‐active enzymes in the fruiting body of Pleurotus tuoliensis during storage

BACKGROUND The fruiting body of Pleurotus tuoliensis deteriorates rapidly after harvest, causing a decline in its commercial value and a great reduction in its shelf life. According to the present research, carbohydrate‐active enzymes (CAZymes) may cause the softening, liquefaction and autolysis of mature mushrooms after harvest. To further understand the in vivo molecular mechanism of CAZymes affecting the postharvest quality of P. tuoliensis fruiting bodies, a tandem mass tags labelling combined liquid chromatography–tandem mass spectrometry (TMT‐MS/MS) proteomic analysis was performed on P. tuoliensis fruiting bodies during storage at 25 °C. RESULTS A total of 4737 proteins were identified, which had at least one unique peptide and had a confidence level above 95%. Consequently, 1307 differentially expressed proteins (DEPs) were recruited using the criteria of abundance fold change (FC) >1.5 or