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A systematic proteomic analysis of NaCl-stressed germinating maize seeds

文献类型： 外文期刊

作者： Meng, Ling-Bo 1 ; Chen, Yi-Bo 3 ; Lu, Tian-Cong 4 ; Wang, Yue-Feng 3 ; Qian, Chun-Rong 6 ; Yu, Yang 6 ; Ge, Xuan-Liang 6 ;

作者机构： 1.Harbin Univ, Dept Life Sci, Harbin 150086, Peoples R China

2.Northeast Agr Univ, Sch Hort, Harbin 150030, Peoples R China

3.Chinese Acad Sci, Inst Bot, Key Lab Photobiol, Beijing 100093, Peoples R China

4.Chinese Acad Sci, State Key Lab Plant Genom, Beijing 100093, Peoples R China

5.Chinese Acad Sci, Natl Ctr Plant Gene Res, Inst Genet & Dev Biol, Beijing 100093, Peoples R China

6.Heilongjiang Acad Agr Sci, Inst Crop Cultivat & Farming, Harbin 150086, Peoples R China

7.Jilin Acad Agr Sci, Ctr Agribiotechnol, Changchun 130033, Peoples R China

关键词： Germination;Maize embryo;Salt stress;Proteomics

期刊名称：MOLECULAR BIOLOGY REPORTS （ 影响因子：2.316； 五年影响因子：2.357 ）

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收录情况： SCI

摘要： Salt (NaCl) is a common physiological stressor of plants. To better understand how germinating seeds respond to salt stress, we examined the changes that occurred in the proteome of maize seeds during NaCl-treated germination. Phenotypically, salt concentrations less than 0.2 M appear to delay germination, while higher concentrations disrupt development completely, leading to seed death. The identities of 96 proteins with expression levels altered by NaCl-incubation were established using 2-DE-MALDI-TOF-MS and 2-DE-MALDI-TOF-MS/MS. Of these 96 proteins, 79 were altered greater than twofold when incubated with a 0.2 M salt solution, while 51 were altered when incubated with a 0.1 M salt solution. According to their functional annotations in the Swiss-Prot protein-sequence databases, these proteins are mainly involved in seed storage, energy metabolism, stress response, and protein metabolism. Notably, the expression of proteins that respond to abscisic acid signals increased in response to salt stress. The results of this study provide important clues as to how NaCl stresses the physiology of germinating maize seeds.

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