果实对高温逆境的响应及其信号转导机理  

Response of Fruit to High Temperature Stress and Its Signal Transduction Mechanism

作　　者：刘洪涛[1] 黄卫东[1] 郝燕燕[1] 

机构地区：[1]中国农业大学食品科学与营养工程学院,北京100083

出　　处：《中国食品学报》2004年第2期95-99,共5页Journal of Chinese Institute Of Food Science and Technology

基　　金：国家自然科学基金资助项目(No.30070531;No.30270918)

摘　　要：介绍了高温对果实生理的主要影响,讨论了提高果实抗热性的机制及高温条件下果实对高温响应所介导的第二信使系统和热激蛋白(HSPs)在提高果实耐高温能力方面所起到的重要作用。高温锻炼作为一种果实对高温环境的适应性措施,显著提高了果实的抗热性。钙离子(Ca2+)、肌醇磷酯信使系统和过氧化氢(H2O2)都可能作为第二信使参与果实对高温逆境响应的信号转导过程。HSPs的产生和表达增强对提高果实细胞的抗高温能力起到了关键的作用。建议深入研究第二信使与果实耐热性之间的关系。The main effect of high temperature on fruit physiology was described in this paper. Mechanism of enhancing the fruit thermotolerance ability and main action of second messenger system and heat shock proteinHSPsintroduced from response of fruit to high temperature were also discussed. High temperature acclimation should be regarded as a method to adapt thermal stress and increase thermotolerance of fruit. Various second messengers such as calcium, H2O2, inositol phosphoinositide and PLC that are well known in signalling cellular cascades may involve signal transduction under high temperature adversity. Production and expression of heat shock protein confers the thermotolerance to fruit. To deep the investigation of relationship between the second messengers and acquisition of fruit thermotolerance should be suggested.

关 键 词：果实 高温逆境响应 信号转导机理 第二信使 热激蛋白 生理 耐热性 防御机理 

分 类 号：TS255[轻工技术与工程—农产品加工及贮藏工程]