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题名: Deciphering the Protective Role of Nitric Oxide against Salt Stress at the Physiological and Proteomic Levels in Maize
作者: Bai, Xuegui1; Yang, Liming1, 2; Yang, Yunqiang1; Ahmad, Parvaiz3; Yang Yongping(杨永平)1; null(胡向阳)1
刊名: JOURNAL OF PROTEOME RESEARCH
关键词: maize ; nitric oxide ; ROS ; saline stress
英文摘要: 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.
出版日期: 2011-10-01
卷号: 10, 期号:10, 页码:4349-4364
语种: 英语
收录类别: SCI
学科分类: Biochemical Research Methods
ISSN号: 1535-3893
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3830
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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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

Recommended Citation:
Bai, Xuegui; Yang, Liming; Yang, Yunqiang; Ahmad, Parvaiz; Yang, Yongping; Hu, Xiangyang.Deciphering the Protective Role of Nitric Oxide against Salt Stress at the Physiological and Proteomic Levels in Maize,JOURNAL OF PROTEOME RESEARCH,2011,10(10):4349-4364
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