Deciphering the Protective Role of Nitric Oxide against Salt Stress at the Physiological and Proteomic Levels in Maize
Bai, Xuegui1; Yang, Liming1,2; Yang, Yunqiang1; Ahmad, Parvaiz3; Yang, Yongping1; Hu, Xiangyang1
Corresponding Authoryangyp@mail.kib.ac.cn ; huxiangyang@mail.kib.ac.cn
2011-10-01
Source PublicationJOURNAL OF PROTEOME RESEARCH
ISSN1535-3893
Volume10Issue:10Pages:4349-4364
AbstractSaline 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.
KeywordMaize Nitric Oxide Ros Saline Stress
Subject AreaBiochemical Research Methods
DOI10.1021/pr200333f
Indexed BySCI
Language英语
WOS Research AreaBiochemistry & Molecular Biology
WOS SubjectBiochemical Research Methods
WOS IDWOS:000295602700001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/3830
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Affiliation1.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
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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