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Zinc improves salt tolerance by increasing reactive oxygen species scavenging and reducing Na+ accumulation in wheat seedlings

文献类型： 外文期刊

作者： Xu, L. H. 1 ; Wang, W. Y. 1 ; Guo, J. J. 2 ; Qin, J. 3 ; Shi, D. Q. 2 ; Li, Y. L. 5 ; Xu, J. 1 ;

作者机构： 1.Qinghai Normal Univ, Coll Life Sci & Geog, Xining 810008, Peoples R China

2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Plant Resource & Sustainable Use, Mengla 666303, Yunnan, Peoples R China

3.Hebei Acad Agr & Forestry Sci, Cereal & Oil Crop Inst, Shijiazhuang 050031, Peoples R China

4.Henan Univ, Coll Life Sci, Kaifeng 475000, Peoples R China

5.Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, Shijiazhuang 050021, Peoples R China

关键词： antioxidative enzyme;ascorbate peroxidase;Na+/H+ antiporter;peroxidase;superoxide dismutase;Triticum aestivum

期刊名称：BIOLOGIA PLANTARUM （ 影响因子：1.747； 五年影响因子：2.146 ）

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收录情况： SCI

摘要： Salt decreases the uptake of Zn and other minerals and causes nutritional disorders in plants. Zn is an essential micronutrient for all organisms and it is reasonable to hypothesize that Zn status is essential for maintaining salt tolerance in plants. In this study, the physiological and molecular mechanisms of Zn-based alleviation of salt stress in wheat seedlings were investigated. Our results indicate that sufficient Zn nutrition maintained antioxidative enzyme activities and decreased a reactive oxygen species over-accumulation in wheat seedlings. Our data also reveal that sufficient Zn nutrition improved the expression of Na+/H+ antiporter genes, TaSOS1 and TaNHX1, thereby decreasing the Na+ accumulation and subsequently improving salt tolerance in wheat seedlings.

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