Deciphering the Protective Role of Nitric Oxide against Salt Stress at the Physiological and Proteomic Levels in Maize

doi:10.1021/pr200333f

	Deciphering the Protective Role of Nitric Oxide against Salt Stress at the Physiological and Proteomic Levels in Maize
	Bai, Xuegui 1; Yang, Liming 1,2; Yang, Yunqiang1 ; Ahmad, Parvaiz 3; Yang, Yongping1 ; Hu, Xiangyang 1
通讯作者	yangyp@mail.kib.ac.cn ; huxiangyang@mail.kib.ac.cn
	2011-10-01
发表期刊	JOURNAL OF PROTEOME RESEARCH
ISSN	1535-3893
卷号	10 期号:10 页码:4349-4364
摘要	Saline stress is a major factor that limits crop yield. Nitric oxide (NO) is functional during plant growth, development, and defense responses. In the present study, the protective role of NO in alleviating saline stress in maize at the physiological and proteomic levels was examined. Our results showed that salt treatment quickly induced NO accumulation and addition of the NO donor S-nitroso-N-acetylpenicillamine (SNAP) efficiently eliminated the inhibitory effect of salt on shoot growth and photosynthesis and inhibited salt-inducible H(2)O(2) accumulation. These effects could be reversed by NO metabolic scavengers and inhibitors. Further proteomic and Western blotting analysis revealed that NO induced G-protein-associated protein accumulation and antioxidant enzymes activities, in addition to activation of defense proteins, energy metabolism, and cell structure/division in salt-treated maize seedlings. Controlling the G-protein status with G-protein activators or inhibitors also affected NO generation and root and stem growth in maize seedlings after saline stress. On the basis of these results, we propose that NO enhances salt tolerance in maize seedlings by enhancing antioxidant enzyme activities and controlling H(2)O(2) levels, and these effects are accompanied by diverse downstream defense responses. During this process, G-protein signaling is an early event that works upstream of NO biogenesis.
关键词	Maize Nitric Oxide Ros Saline Stress
学科领域	Biochemical Research Methods
DOI	10.1021/pr200333f
收录类别	SCI
语种	英语
WOS记录号	WOS:000295602700001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/3830
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Yunnan, Peoples R China 2.Huaiyin Normal Univ, Sch Life Sci, Huaian 223300, Peoples R China 3.Univ Kashmir, Dept Bot, AS Coll, Srinagar 190008, Jammu & Kashmir, India
推荐引用方式 GB/T 7714	Bai, Xuegui,Yang, Liming,Yang, Yunqiang,et al. Deciphering the Protective Role of Nitric Oxide against Salt Stress at the Physiological and Proteomic Levels in Maize[J]. JOURNAL OF PROTEOME RESEARCH,2011,10(10):4349-4364.
APA	Bai, Xuegui,Yang, Liming,Yang, Yunqiang,Ahmad, Parvaiz,Yang, Yongping,&Hu, Xiangyang.(2011).Deciphering the Protective Role of Nitric Oxide against Salt Stress at the Physiological and Proteomic Levels in Maize.JOURNAL OF PROTEOME RESEARCH,10(10),4349-4364.
MLA	Bai, Xuegui,et al."Deciphering the Protective Role of Nitric Oxide against Salt Stress at the Physiological and Proteomic Levels in Maize".JOURNAL OF PROTEOME RESEARCH 10.10(2011):4349-4364.

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