Effect of genotype and exogenous application of glycinebetaine on antioxidant enzyme activity in native gels of 7-day-old salt-stressed tomato (Solanum lycopersicum) seedlings

文献类型： 外文期刊

第一作者： Chen, Songbi

作者： Chen, Songbi;Heuer, Bruria

作者机构：

关键词： Salinity;Antioxidant enzymes;Exogenous application;Glycinebetaine;Tomato (Solanum esculentum) genotypes

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

ISSN： 0304-4238

年卷期： 2013 年 162 卷

页码：

收录情况： SCI

摘要： Tomatoes are classified as moderately salt-tolerant crops, but they are unable to synthesize glycinebetaine (GB), a compound that alleviates salinity-induced inhibition of plant growth. We investigated the effects of salinity on the antioxidative system of tolerant/susceptible genotypes of tomato. In the susceptible genotype's (F144) hypocotyls and radicles, the activities of superoxide dismutase (SOD), L-ascorbate oxidase (L-AAO), ascorbate peroxidase (APX) and catalase increased under salt stress, whereas that of peroxidase (POD) II decreased slightly. In the relatively tolerant genotype Patio, salt stress made little difference in the hypocotyls, whereas the activities of SOD, L-AAO, APX and POD increased significantly in the radicles. The effect of exogenous application of GB under salt stress on antioxidative enzyme activity was also investigated. The results constitute an important step in the elucidation of mechanisms underlying resistance to salinity. (C) 2013 Elsevier B.V. All rights reserved.

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