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作者: TiantianYe, HaitaoShi, YanpingWang, FanYang and ZhulongChan*
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通讯作者: ZhulongChan*
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刊物名称: Frontiers in Plant Science
论文题目:
论文题目: Contrasting Proteomic and Metabolomic Responses of Bermudagrass to Drought and Salt Stresses
摘要:
摘要:

 Bermudagrass (Cynodon dactylon) is one of tolerant grasss pecies to drought and salt. The comparative analyses of bermudagrass in response to drought and salt stresses at the physiological, proteomic, and metabolomic levels were performed in this study. The physiological results indicated that osmolytes accumulation, ROS level and antioxidant enzyme activities were extensively changed by drought and salt stresses. Through comparative proteomic analyses, we successfully identified a total of 77 proteins involved in photosynthesis, oxidative pentose phosphate, glycolysis, and redox metabolic pathways when exposed to drought and salt stresses. Among them, 36 proteins were commonly regulated by both treatments, while other 40 and 13 proteins were specifically regulated by drought and salt, respectively. Totally 15 proteins were involved in carbon metabolic pathway. Moreover, contents of 37 metabolites in cluding amino acids, organic acids, sugars, and sugar alcohols were regulated by drought and salt treatments. Amongthem, 18 commonly modulated metabolites were involved in carbon and amino acid metabolic pathways. Drought treatment or 21 days caused less accumulation of sugars and sugar alcohols and increased ROS level in bermudagrass which led to relatively more severe cell membrane reflected by high EL-value and lower survival rate when compared to 400 mM salt treatment for 21 days. These results suggested that drought and 400 mM NaCl stresses for 21 days treatment affected common and specific changes in bermudagrass, which would provide new insights to understand the underlying molecular mechanisms and metabolic homeostasis  of  bermudagrass in responses to abiotic stresses.

年: 2016
卷: 7
期:
页: 1674
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