您好，欢迎访问安徽省农业科学院 机构知识库！

Melatonin improves antioxidant capacity and ion homeostasis and enhances salt tolerance in maize seedlings

文献类型： 外文期刊

作者： Jiang, Chaoqiang 1 ; Cui, Quanren 1 ; Feng, Kun 2 ; Xu, Dafeng 1 ; Li, Chengfeng 3 ; Zheng, Qingsong 2 ;

作者机构： 1.Anhui Acad Agr Sci, Tobacco Res Inst, Maize Res Ctr, Hefei 230031, Anhui, Peoples R China

2.Nanjing Agr Univ, Coll Nat Resources & Environm Sci, Key Lab Marine Biol, Nanjing 210095, Jiangsu, Peoples R China

3.Anhui Agr Univ, Coll Agr, Hefei 230036, Anhui, Peoples R China

关键词： Melatonin;Maize (Zea mays L.);Salt stress;Antioxidative capacity;Ion homeostasis

期刊名称：ACTA PHYSIOLOGIAE PLANTARUM （ 影响因子：2.354； 五年影响因子：2.711 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Melatonin (N-acetyl-5-methoxytryptamine) is a biological hormone involved in many important physiological processes in plants. To better understand the protective roles of melatonin in plants against salt stress, we determined the effects of exogenous melatonin (1 mu M) on plant growth, photosynthesis, antioxidant enzyme activity and ion homeostasis in maize plants under 100 mM NaCl. Results showed that salt stress decreased plant dry matter accumulation, net photosynthetic rate (P-n) and chlorophyll contents. However, 1 mu M melatonin application significantly alleviated this growth inhibition and enhanced P-n by 19 %. Melatonin application also enhanced the activities of antioxidative enzymes of salt-stressed maize leaves, and decreased their electrolyte leakage and MDA content by 25 and 22 %, respectively. In addition, melatonin application significantly increased K+ contents and K+/Na+ ratios in salt-stressed maize shoots by 18 and 52 %, respectively. However, the Na+ content was decreased significantly in melatonin-treated leaves under salinity. The results suggested that the melatonin enhanced maize salt tolerance in maize were most likely due to the improvement of photosynthetic capacity, antioxidative capacity and ion homeostasis in leaves. This study provides, for the first time, the evidence that support the protective roles of exogenous melatonin in maize against salinity.

  • 相关文献

[1]Overexpression of Arabidopsis thaliana Na+/H+ antiporter gene enhanced salt resistance in transgenic poplar (Populus x euramericana 'Neva'). Jiang, Chaoqiang,Zheng, Qingsong,Liu, Zhaopu,Liu, Ling,Zhao, Gengmao,Long, Xiaohua,Jiang, Chaoqiang,Xu, Wenjun. 2012

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：安徽省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台