Proteome dynamics and physiological responses to short-term salt stress in Leymus chinensis leaves

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 study understand the potential mechanism salt tolerance in L. that used for crop molecular breeding. A series short-term (<48 h) NaCl treatments (0 ~ 700 mM) conducted. Physiological data indicated root leaves growth inhibited, chlorophyll contents decreased, while hydraulic conductivity, proline, sugar sucrose accumulated under stress. For proteomic analysis, we obtained 274 differentially expressed proteins response treatments. GO revealed 44 out are involved biosynthesis amino acids carbon metabolism. Our findings suggested copes with by stimulating activities POD, SOD CAT enzymes, speeding up reactions later steps citrate cycle, synthesis proline sugar. agreement our data, also showed depress expression photosystem relevant proteins, Calvin chloroplast biosynthesis.