山东农业科学2025，Vol.57Issue(10)：83-94,12.DOI:10.14083/j.issn.1001-4942.2025.10.010
茉莉酸甲酯处理对采后荔枝褐变及能量代谢的影响
Effects of Methyl Jasmonate Treatment on Postharvest Litchi Browning and Energy Metabolism
摘要
Abstract
Litchi is primarily consumed fresh.However,it is highly susceptible to browning after har-vest,making the exploration of preservation techniques particularly important.In this study,methyl jasmonate(MeJA)at concentrations of 0,10,50 and 100 μmol/L was used to treat postharvest litchi.The changes of browning index,colorimetric values,antioxidant capacity and ATP content,and the expression of energy me-tabolism-related genes in pericarp during storage were measured to elucidate the effects of MeJA treatment on browning and energy metabolism in postharvest litchi.The results indicated that MeJA significantly inhibited browning of postharvest litchi(P＜0.05),and 100 μmol/L MeJA was the most effective.Additionally,it was found that 100 pmol/L MeJA treatment significantly maintained high erexpression of energy metabolism-related genes including LcSnRK2、LcATPb、LcAAC、LcAOX1 and LcAOX1 in later storage period,thereby sustained higher ATP content and energy charge,and ultimately inhibited the occurrence of browning.On the other hand,100 pmol/L MeJA treatment could also significantly maintain higher ascorbic acid(AsA)and glutathi-one(GSH)contents,as well as higher activities of catalase(CAT)and superoxide dismutase(SOD)in litchi pericarp in later storage period,thereby preserve stronger antioxidant capacity and delay the onset of browning.The results of this study could provide a theoretical foundation for future research on the relationship between browning and energy metabolism in postharvest litchi.关键词
荔枝/茉莉酸甲酯/褐变/能量代谢/相关性分析Key words
Litchi chinensis/Methyl jasmonate/Browning/Energy metabolism/Correlation analysis分类
农业科技引用本文复制引用
何妹英,王敏,帅良,廖玲燕,殷菲胧,刘云芬,梁园丽,蔡文,宋慕波,黄亮亮..茉莉酸甲酯处理对采后荔枝褐变及能量代谢的影响[J].山东农业科学,2025,57(10):83-94,12.基金项目
广西自然科学基金项目(2024GXNSFBA010323) （2024GXNSFBA010323）
国家自然科学基金项目(32260611) （32260611）
中国博士后科学基金项目(2023MD744202) （2023MD744202）
贺州学院博士科研启动基金项目(2024BSQD06) （2024BSQD06）
贺州学院博士后创新实践基地科研启动基金项目(349000075) （349000075）
