Proteome dynamics and physiological responses to short-term salt stress in Leymus chinensis leaves
文献类型： 外文期刊
作者： Li, Jikai 1 ; Cui, Guowen 1 ; Hu, Guofu 1 ; Wang, Mingjun 1 ; Zhang, Pan 1 ; Qin, Ligang 1 ; Shang, Chen 2 ; Zhang, Haili 1 ;
作者机构： 1.Northeast Agr Univ, Anim Sci & Technol, Harbin, Heilongjiang, Peoples R China
2.Heilongjiang Acad Agr Sci, Inst Grass Res, Harbin, Heilongjiang, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Shanghai, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2017 年 12 卷 8 期
页码：
收录情况： SCI
摘要： Salt stress is becoming an increasing threat to global agriculture. In this study, physiological and proteomics analysis were performed using a salt-tolerant grass species, Leymus chinensis (L. chinensis). The aim of this study is to understand the potential mechanism of salt tolerance in L. chinensis that used for crop molecular breeding. A series of short-term (<48 h) NaCl treatments (0 similar to 700 mM) were conducted. Physiological data indicated that the root and leaves growth were inhibited, chlorophyll contents decreased, while hydraulic conductivity, proline, sugar and sucrose were accumulated under salt stress. For proteomic analysis, we obtained 274 differentially expressed proteins in response to NaCl treatments. GO analysis revealed that 44 out of 274 proteins are involved in the biosynthesis of amino acids and carbon metabolism. Our findings suggested that L. chinensis copes with salt stress by stimulating the activities of POD, SOD and CAT enzymes, speeding up the reactions of later steps of citrate cycle, and synthesis of proline and sugar. In agreement with our physiological data, proteomic analysis also showed that salt stress depress the expression of photosystem relevant proteins, Calvin cycle, and chloroplast biosynthesis.
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