Nitric Oxide Regulates Mitochondrial Fatty Acids and Promotes CBF Expression of Peach Fruit during Cold Storage

Low-temperature storage is convenient for postharvest preservation of peach fruit, but fruit sensitive to cold damage, which lowers its quality. Nitric oxide (NO) has the potential improve bitter resistance fruit. In this work, was treated with 15 ?mol L?1 NO and 5 c-PTIO [2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxo-3-oxide], study changes in mitochondrial fatty acids expression C-repeat binding factor (CBF). The results showed that exogenous significantly maintained quality, reduced peroxidation acids, increased activities antioxidants superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbic acid (APX), content hydrogen peroxide (H2O2). Meanwhile, treatment suppressed increase browning index ion leakage rate, activity S-nitrosoglutathione reductase (GSNOR), contents S-nitrosothiols (SNOs), ratios NAD+/NADH NADP+/NADPH, levels PpCBF1/5/6. However, PpCBF2/3/4 were not regulated by NO. Peaches opposite effects those These suggest can antioxidant capacity, preserve upregulate PpCBF1/5/6 alleviate tolerance maintain quality during storage.