水分胁迫下柑桔果皮的生化变化与复水后补偿生长的关系Biochemical Changes in the Rind of Water Stressed Citrus Fruit as Related to Compensatory Growth After Rewatering
黄旭明,黄辉白,吕雪娟
摘要(Abstract)：
比较了控水与正常浇水处理的盆栽柑桔（CitrusreticulataBlanco.ev.Zhuju）果实的果皮中过氧化物酶（POD）、SDS-不可溶性（共价键壁结合）蛋白氨基酸组成、羟脯氨酸（Hpro）含量及SDS-可溶性成分中氨基酸组成与含量。结果表明，柑桔砂囊膨大早期，水分胁迫并未引起果皮中POD活性提高及共价键壁结合结构蛋白在质与量上的明显改变，显示POD介导的细胞壁硬化未被激活，而氨基酸组成中最明显的变化是脯氨酸（Pro）比率大幅提高，这暗示渗透调节已经启动，这些均有利于胁迫果复水后迅速恢复膨大生长。
关键词(KeyWords)： 柑桔;水分胁迫;过氧化物酶;氨基酸组成;羟脯氨酸;脯氨酸
基金项目(Foundation): 国家自然科学基金
作者(Author): 黄旭明,黄辉白,吕雪娟
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