热带作物学报2018，Vol.39Issue(2)：254-259,6.DOI:10.3969/j.issn.1000-2561.2018.02.007
能量供应对‘南岛无核’荔枝果实采后能量代谢及衰老的影响
Effects of Energy Supply on Energy Metabolism and Postharvest Senescence of 'Nandao wuhe' Litchi Fruit
摘要
Abstract
In the test,seedless litchi fruits were soaked in the solution with ATP and DNP.The relationship between browning induced by senescence and respiration,cell membrane damage,mitochondrial electron transport and energy production of oxidative phosphorylation,the key enzyme activities of litchi fruits in the postharvest storage were studied.The results showed that uncouple agent DNP treated inhibited energy supply,promoted dehydration of litchi pericarp,accelerated damage of cell membrane,decreased energy charge,and promoted senescence of litchi fruit browning.ATP treated decreased dehydration and cell membrane damage of pericarp,relative high energy charge were kept during storage,and the senescence and browning of litchi fruit were delayed.At earlier storage,the production of ATP in mitochondrial was blocked by the uncoupling effect of DNP,and the activities of cytochrome c oxidase(COX),H+-ATPase,and Ca2+-ATPase induced and enhanced directly,and the utilization of energy-yielding material increased.At later storage,the activities of COX,H+-ATPase,and Ca2+-ATPase decreased,which were adverse to delaying fruit senescence.The activity of COX in litchi pericarp soaked in the solution with ATP at earlier storage reduced,and the utilization of energy-yielding material decreased.And the activities of COX,H+-ATPase,and Ca2+-ATPase were stimulated in pericarp by ATP,which were conducive to delaying fruit senescence.According to the results,measures in appropriately increasing the enzymes' activities of ATP production such as COX,H+-ATPase,and Ca2+-ATPase in pericarp of litchi at later storage to inhibit browning and prolong storage time were suggested.关键词
荔枝果实/能量代谢/采后衰老Key words
litchi fruit/energy metabolism/postharvest senescence分类
农业科技引用本文复制引用
高兆银,赵超,胡美姣,李敏,李焕苓,王果,孙进华,王家保..能量供应对‘南岛无核’荔枝果实采后能量代谢及衰老的影响[J].热带作物学报,2018,39(2):254-259,6.基金项目
国家荔枝龙眼产业技术体系(No.CARS-33-03). （No.CARS-33-03）
