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木麻黄幼苗小枝质膜离子泵活性对酸雨的响应
Authors
严重玲
李裕红
Publication date
1 January 2006
Publisher
Abstract
对模拟p H4. 5~2. 5 酸雨胁迫3 个月后木麻黄幼苗小枝质膜离子泵活性测定结果表明,木麻黄幼苗嫩枝质膜H+ 2 ATPase 和Ca2 + 2ATPase 对酸雨非常敏感,常随酸雨强度的加大其活性受愈来愈强的抑制. p H4. 5~2. 5 酸雨处理使质膜 H + 2ATPase 活性被抑制76. 64 %~85. 88 % ,而Ca2 + 2ATPase 活性仅为对照的14. 12 %~4. 7 %. 在p H3. 0 酸雨处理组,质 膜H+ 2ATPase 和Ca2 + 2ATPase 活性均出现反弹升高. 酸雨对质膜H + 2ATPase 和Ca2 + 2ATPase 活性所产生的相似作用, 体现出质膜H+ 2ATPase 和Ca2 + 2ATPase 对酸雨胁迫信号具有某种程度上相同的活性响应调节机制
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Last time updated on 16/06/2016