Abstract
The potassium chloride (KCl), potassium nitrate (KNO3) and potassium sulfate (K2SO4) could inhibit G. citri-aurantii development in vitro, and control the efficient soaking of 0.1 and 0.5 M KCl reached 14.1% and 46.3% in vivo. In addition, 0.5 M KCl treatment made no difference on fruit quality of weight loss, soluble solid and titratable acid neither in the incidence of sour rot, which decreased to 2.35% during 90 days storage period. Furthermore, the citrus peel enzyme activity of CAT, PPO and Cellulase significant increased, G. citri-aurantii spores were gathered into long chain shape preventing spore germination and lipid droplets (LDs) accumulated in large quantities after KCl treatment by TEM. In addition, transcriptome sequencing analysis was confirmed and the six genes (Gci002087, Gci003354, Gci000394, Gci003505, Gci004433 and Gci000013) involved in target of rapamycin (TOR) pathway. The results of this study provide a new direction for sour rot prevention.
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