文献类型： 外文期刊
作者： Zhang, Yihua 1 ; Su, Jiuchang 1 ; Cheng, Dan 1 ; Wang, Ren 2 ; Mei, Yudong 1 ; Hu, Huali 3 ; Shen, Wenbiao 1 ; Zhang, Yao 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Life Sci, Lab Ctr Life Sci, Nanjing 210095, Jiangsu, Peoples R China
2.Jiangsu Prov & Chinese Acad Sci, Inst Bot, Nanjing 210014, Jiangsu, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Jiangsu, Peoples R China
4.Shanxi Acad Agr Sci, Crop Res Inst, Taiyuan 030031, Shanxi, Peoples R China
关键词： Methane; Vigna radiate; Osmotic stress; Nitric oxide; Redox homeostasis
期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）
ISSN： 1471-2229
年卷期： 2018 年 18 卷
页码：
收录情况： SCI
摘要： Background: Osmotic stress is a major abiotic stress limiting crop production by affecting plant growth and development. Although previous reports discovered that methane (CH4) has a beneficial effect on osmotic stress, the corresponding downstream signal(s) is still elusive. Results: Polyethylene glycol (PEG) treatment progressively stimulated the production of CH4 in germinating mung bean seeds. Exogenous CH4 and sodium nitroprusside (SNP) not only triggered nitric oxide (NO) production in PEGstressed plants, but also alleviated the inhibition of seed germination. Meanwhile, amylase activity was activated, thus accelerating the formation of reducing sugar and total soluble sugar. Above responses could be impaired by NO scavenger(s), suggesting that CH4-induced stress tolerance was dependent on NO. Subsequent tests showed that CH4 could reestablish redox balance in a NO-dependent fashion. The addition of inhibitors of the nitrate reductase (NR) and NO synthase in mammalian (NOS), suggested that NR and NOS-like protein might be partially involved in CH4-alleviated seed germination inhibition. In vitro and scavenger tests showed that NO-mediated S-nitrosylation might be associated with above CH4 responses. Conclusions: Together, these results indicated an important role of endogenous NO in CH4-enhanced plant tolerance against osmotic stress, and NO-regulated redox homeostasis and S-nitrosylation might be involved in above CH4 action.
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