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当前位置: 首页 > 文章 > 外源钙对盐胁迫下盐地碱蓬生长影响的初步探讨 河南农业科学 2010,39 (7) 34-36+80
Position: Home > Articles > Effects of Exogenous Calcium on the Growth of Halophyte Suaeda salsa under Salt-stress Journal of Henan Agricultural Sciences 2010,39 (7) 34-36+80

外源钙对盐胁迫下盐地碱蓬生长影响的初步探讨

作  者：
韩宁;何熹;王伟
单  位：
山东福瑞达生物工程有限公司;山东轻工业学院
关键词：
盐地碱蓬;盐处理;Ca2+;Ca2+/H+逆向转运体;Ca2+-ATPase
摘  要：
以不同浓度的Ca2+(0、20 mmol/L)及不同浓度的NaCl(0、100、400 mmol/L)处理盐地碱蓬(Suaeda salsa)幼苗,探索盐渍条件下Ca2+对该植物在生理和分子水平上的影响。结果表明,外源Ca2+处理使盐地碱蓬幼苗鲜质量明显高于对照,Ca2+、K+浓度也高于对照;叶片液泡膜Ca2+-AT-Pase活性升高。Ca2+/H+逆向转运体(Ca2+/H+antiporter)基因的表达量不仅随外源Ca2+处理而升高,而且NaCl处理后也明显升高。以上结果说明,盐对盐地碱蓬生长的促进是依赖Ca2+的,维持盐胁迫下胞质Ca2+浓度稳态的运输体主要是液泡膜Ca2+/H+逆向转运体。
译  名：
Effects of Exogenous Calcium on the Growth of Halophyte Suaeda salsa under Salt-stress
作  者：
HAN Ning1,HE Xi1,WANG Wei2(1.Food and Biologic Engineering Department,Shandong Institute of Light Industry,Jinan 250353,China;2.Shandong Freda Bioengineering Co.Ltd.,Jinan 250101,China)
关键词：
Suaeda salsa;Salt treatment;Ca2+;Ca2+/H+ antiporter;Ca2+-ATPase
摘  要：
In order to study the effects of Ca2+ nutrition on the seedling physiological and molecular levels of Suaeda salsa,the seedlings grown in Hoagland nutrient solution were treated with different NaCl concentrations combined with two levels of Ca2+(0mmol/L and 20mmol/L).Increasing of Ca2+ concentration in the solution markedly increased the fresh weight of S.salsa seedlings,and the concentration of Ca2+,K+ in the leaf cell sap under NaCl stress was higher than that of the contral.Furthermore,the leaf tonoplast Ca2+-ATPase activity was significantly increased with increasing of exogenous Ca2+ concentration,but little changed was found under NaCl stress.However,Ca2+/H+ antiporter expression levels were markedly increased under NaCl stress with different Ca2+ nutrition level.The results suggest that the enhancement of S.salsa seedlings growths under salt stress was Ca2+-dependented process and Ca2+/H+ antiporter played an important role in maintaining cytosolic Ca2+ homeostasis.

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