NaCl胁迫下大麦根系液泡膜H+-ATPase活性与膜流动性的关系(英文)

被引:15
作者
章文华
陈沁
刘友良
机构
[1] 南京农业大学农学院,上海大学生命科学学院,南京农业大学农学院南京,上海,南京
关键词
盐胁迫; H+-ATPase; 膜流动性; 脂肪酸组分; 大麦;
D O I
暂无
中图分类号
Q945.78 [协迫生理学];
学科分类号
摘要
用 5 0~ 2 0 0mmol/LNaCl处理 2d后 ,大麦 (HordeumvulgareL .)品种“滩引 2号”(耐盐性强 )根的液泡膜H+ ATPase活性增强 ,6 0 0mmol/LNaCl处理下酶活性下降 ;“科品 7号”(耐盐性弱 )在 5 0~ 10 0mmol/LNaCl处理 2d后根的液泡膜H+ ATPase活性增强 ,2 0 0~ 6 0 0mmol/LNaCl处理下酶活性随盐浓度增加而降低。 5 0~ 2 0 0mmol/LNaCl处理下“滩引 2号”根的液泡膜流动性下降 ,6 0 0mmol/LNaCl处理下膜流动性明显增大 ;盐胁迫下液泡膜膜脂脂肪酸不饱和度下降时 ,膜流动性下降 ,反之则膜流动性上升。由此推断高盐胁迫下液泡膜膜脂脂肪酸不饱和度上升而引起膜流动性上升可能是引起H+ ATPase活性下降的原因之一。
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页码:292 / 296
页数:5
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