Ethylene Enhances Seed Germination and Seedling Growth Under Salinity by Reducing Oxidative Stress and Promoting Chlorophyll ContentviaETR2 Pathway

文献类型： 外文期刊

第一作者： Wang, Yue

作者： Wang, Yue;Diao, Pengfei;Yu, Ruonan;Zhang, Man;Zuo, Tiantian;Fan, Yanyan;Niu, Yiding;Yan, Fang;Wuriyanghan, Hada;Wang, Yue;Diao, Pengfei;Yu, Ruonan;Zhang, Man;Zuo, Tiantian;Fan, Yanyan;Niu, Yiding;Yan, Fang;Wuriyanghan, Hada;Kong, Lingqi

作者机构：

关键词： alfalfa; salinity; ethylene; MsETR2; seed germination; seedling growth

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2020 年 11 卷

页码：

收录情况： SCI

摘要： Alfalfa (Medicago sativaL.) is an important forage, and salinity is a major stress factor on its yield. In this study, we show that osmotic stress retards alfalfa seedling growth, while ionic/oxidative stress reduces its seed germination. Ethylene treatment can recover the germination rate of alfalfa seeds under salt stress, while ethylene inhibitor silver thiosulfate exacerbates salt effects. ETH reduces the accumulation of MDA and H(2)O(2)and increases POD activity. ETH and ACC improve the salt tolerance of alfalfa by increasing proline content under salt stress. In contrast, STS inhibits alfalfa seed germination by reducing POD activity. NaCl treatment reduces chlorophyll content in alfalfa leaves, while ETH and ACC can increase the chlorophyll content and promote seedling growth. ETH promotes the growth of alfalfa in saline condition by reducing the expression ofMsACOandMsERF8genes, while increases its germination rate by upregulatingMsERF11gene. Silencing ofMsETR2, a putative ethylene receptor gene in alfalfa, abolishes ethylene triggered tolerance to salt stress. In summary, we show that ethylene improves salt tolerance in alfalfavia MsETR2dependent manner, and we also analyze the regulatory mechanism of ethylene during germination of alfalfa seeds under salt stress.

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[1]Ethylene Enhances Seed Germination and Seedling Growth Under Salinity by Reducing Oxidative Stress and Promoting Chlorophyll Content via ETR2 Pathway (vol 11, 1066, 2020). Wang, Yue,Diao, Pengfei,Yu, Ruonan,Zhang, Man,Zuo, Tiantian,Fan, Yanyan,Niu, Yiding,Yan, Fang,Wuriyanghan, Hada,Wang, Yue,Diao, Pengfei,Yu, Ruonan,Zhang, Man,Zuo, Tiantian,Fan, Yanyan,Niu, Yiding,Yan, Fang,Wuriyanghan, Hada,Kong, Lingqi. 2021

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