Differential response of antioxidant enzymes to salinity stress in two varieties of Azolla (Azolla pinnata and Azolla filiculoides)
Differential response of antioxidant enzymes to salinity stress in two varieties of Azolla (Azolla pinnata and Azolla filiculoides)
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DOI：
10.1016/j.envexpbot.2005.08.002
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发表时间：
2006-12-01
影响因子：
5.7
通讯作者：
Abraham, G.
中科院分区：
文献类型：
--
作者：
Masood, Amjad;Shah, Nisar Ahmad;Abraham, G.
比较分析了不同浓度NaCl处理下两个品种杜鹃花（羽状杜鹃花和毛毛杜鹃花）抗氧化成分的活性及其调控作用。总超氧化物歧化酶（SOD）和抗坏血酸过氧化物酶（APX）活性升高，而黄丝桃活性降低。在30 mM NaCl处理下，桄榔子的Na+离子含量较低，电解质泄漏量较低。我们的研究表明，抗氧化酶对杜鹃花耐盐性有不同的反应。根据我们的比较分析，与盐敏感的A. filiculoides相比，A. pinnata具有耐盐性。(c) 2005 Elsevier B.V.版权所有
The activity and modulation of antioxidant components were comparatively analyzed in two varieties of Azolla (Azolla pinnata and Azolla filiculoides) under different concentrations of NaCl. The total superoxide dismutase (SOD) and ascorbate peroxidase (APX) activity increased in A. pinnata, whereas both enzyme activities decreased in A. filiculoides. The plants of A. pinnata exposed to 30 mM NaCl contained a lower amount of Na+ ions and showed a lower electrolyte leakage than A. filiculoides. Our studies indicate a differential response of antioxidant enzymes in relation to salt tolerance in Azolla plants. On the basis of our comparative analysis, A. pinnata has been ranked salt tolerant as compared with A. filiculoides, which is salt sensitive. (c) 2005 Elsevier B.V. All rights reserved.