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盐胁迫下氯丙嗪和LaCl_(3)对稻苗K~(+)、Na~(+)、Cl~(-)吸收转运的影响

宗会, 徐照丽, 刘娥娥, 李明启

华南农业大学生物技术学院.广东,广州 510642；沈阳农业大学土地与环境学院.辽宁,沈阳 110161

摘要

CPZ和LaCl_(3)预处理后,盐胁迫下稻苗对K~(+)/Na~(+)的选择性吸收下降,致使稻苗K~(+)含量减少、Na~(+)含量增加,Na~(+)/K~(+)比值显著增加;并且稻苗地上部Cl~(-)含量也显著增加。盐胁迫处理稻苗2d后解除盐胁迫,改用蒸馏水培养,在蒸馏水中加入CPZ或LaCl_(3)时,稻苗中含有较高的Na~(+),即CPZ和LaCl_(3)抑制稻苗将体内Na~(+)排出体外的能力。上述结果表明,盐胁迫下,Ca~(2+)·CaM信使系统可能参与稻苗对K~(+)、Na~(+)和Cl~(-)的吸收转运以适应盐胁迫。

关键词： 水稻幼苗; CPZ和LaCl3; K+、Na+和Cl-; 吸收转运; 盐胁迫

Effects of CPZ and LaCl_(3) on uptake and transport of K~(+), Na~(+) and Cl~(-) in rice seedlings under salt stress

Zong Hui, Xu Zhaoli, Liu Ee, Li Mingqi

College of Biotechnology,South China Agricultural University.Guangzhou 510642,Guangdong；China

Abstract

All the results above suggested that Ca~(2+)·CaM messenger system was involved in selective uptake of Na~(+)/K~(+) and Cl~(-) by rice seedlings under salt stress, thus rice seedling could have some action to adapt to salt stress.

Key words: Rice seedling;CPZ and LaCl_(3);K~(+);Na~(+) and Cl~(-);Uptake and transport

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引用本文：

宗会, 徐照丽, 刘娥娥, 李明启. 盐胁迫下氯丙嗪和LaCl_(3)对稻苗K~(+)、Na~(+)、Cl~(-)吸收转运的影响[J]. 生理学报 2001; 53 (4): .

Zong Hui, Xu Zhaoli, Liu Ee, Li Mingqi. Effects of CPZ and LaCl_(3) on uptake and transport of K~(+), Na~(+) and Cl~(-) in rice seedlings under salt stress. Acta Physiol Sin 2001; 53 (4): (in Chinese with English abstract).