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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (9): 202-205.

所属专题： 生物技术

• 农学 农业基础科学 • 上一篇    下一篇

渗透胁迫对白三叶幼苗根系离子分泌和质膜ATP酶活性的影响

韩建秋   

  • 收稿日期:2009-12-21 修回日期:2010-01-14 出版日期:2010-05-05 发布日期:2010-05-05
  • 基金资助:

    盆栽植物综合控根技术研究

Effects of PEG Stress on Plasma Membrane Permeability and ATPase Activity of White Clovers

Han Jianqiu   

  • Received:2009-12-21 Revised:2010-01-14 Online:2010-05-05 Published:2010-05-05

PDF (PC)

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摘要：

用PEG－6000渗透胁迫处理，白三叶根系质膜透性升高,抗旱品种‘海发’增幅小于不抗旱品种‘瑞文德’。根系分泌物中K+、Ca2+、H+的含量变化与根系质膜透性的变化一致。水分胁迫早期,白三叶根系PM H＋-ATPase活性升高,胁迫时间延长,不抗旱品种‘瑞文德’的PM H＋-ATPase酶活性下降,但抗旱品种‘海发’的酶活性一直较高。PM Ca2+-ATPase酶的活性与PM H＋-ATPase酶表现一致。

关键词: 荷花, 荷花, 花粉形态, 主成分分析

Abstract:

The plasma membrane (PM) permeability increased in white clover roots under PEG-6000 osmotic stress, and the amplitude of changes in drought-resistant cultivar was more sensitive than that in the drought one. the contents of K+, Ca2+ and H+ in root exudates changed with the plasma membrane permeability. PM H+-ATPase activity increased at early stage under stress, but dropped at late stage under serious stress in drought-resistant cultivar. PM Ca2+-ATPase activity changed like PM H+-ATPase activity.