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小麦胚休眠的蛋白质组分析

DOI: 10.7668/hbnxb.2009.02.001, PP. 1-7

Keywords: 小麦,休眠,ABA,过氧化氢,蛋白质组

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Abstract:

为探讨小麦种子休眠解除的机制,利用蛋白质组学方法比较解除休眠前后的小麦胚在ABA和H2O2中的蛋白质表达情况.H2O2能打破种子休眠,而ABA则使种子保持休眠状态.比较2D图谱后,利用MALD1-TOF-MS鉴定了10个在不同处理间表达丰度差异显著的蛋白点,其中一些蛋白在已知的种子萌发中起重要作用.种子休眠的解除是一个复杂的发育过程,涉及环境胁迫反应(胚发育后期丰度蛋白、NAD(P)H脱氢酶)、细胞循环(生长素反应蛋白)、信号转导(钙调素相关蛋白)和贮藏蛋白(2S种子清蛋白)代谢等生理活动.为研究H2O2打破小麦休眠的分子机理提供了重要参考.

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