气候变化领域集成服务门户(CCPortal): Comparative Proteomics Analyses of Kobresia pygmaea Adaptation to Environment along an Elevational Gradient on the Central Tibetan Plateau

CCPortal

DOI	10.1371/journal.pone.0098410
	Comparative Proteomics Analyses of Kobresia pygmaea Adaptation to Environment along an Elevational Gradient on the Central Tibetan Plateau
	Li, Xiong; Yang, Yunqiang; Ma, Lan; Sun, Xudong; Yang, Shihai; Kong, Xiangxiang; Hu, Xiangyang; Yang, Yongping
通讯作者	Hu, XY (通讯作者)
发表日期	2014
ISSN	1932-6203
卷号	9 期号:6
英文摘要	Variations in elevation limit the growth and distribution of alpine plants because multiple environmental stresses impact plant growth, including sharp temperature shifts, strong ultraviolet radiation exposure, low oxygen content, etc. Alpine plants have developed special strategies to help survive the harsh environments of high mountains, but the internal mechanisms remain undefined. Kobresia pygmaea, the dominant species of alpine meadows, is widely distributed in the Southeastern Tibet Plateau, Tibet Autonomous Region, China. In this study, we mainly used comparative proteomics analyses to investigate the dynamic protein patterns for K. pygmaea located at four different elevations (4600, 4800, 4950 and 5100 m). A total of 58 differentially expressed proteins were successfully detected and functionally characterized. The proteins were divided into various functional categories, including material and energy metabolism, protein synthesis and degradation, redox process, defense response, photosynthesis, and protein kinase. Our study confirmed that increasing levels of antioxidant and heat shock proteins and the accumulation of primary metabolites, such as proline and abscisic acid, conferred K. pygmaea with tolerance to the alpine environment. In addition, the various methods K. pygmaea used to regulate material and energy metabolism played important roles in the development of tolerance to environmental stress. Our results also showed that the way in which K. pygmaea mediated stomatal characteristics and photosynthetic pigments constitutes an enhanced adaptation to alpine environmental stress. According to these findings, we concluded that K. pygmaea adapted to the high-elevation environment on the Tibetan Plateau by aggressively accumulating abiotic stress-related metabolites and proteins and by the various life events mediated by proteins. Based on the species'lexible physiological and biochemical processes, we surmised that environment change has only a slight impact on K. pygmaea except for possible impacts to populations on vulnerable edges of the species' range.
关键词	STOMATAL DENSITY OXIDATIVE STRESS HIGH-TEMPERATURE NITRIC-OXIDE ANTIOXIDANT ENZYMES ABSCISIC-ACID PLANT LIFE LEAF-AREA RESPONSES LEAVES
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000336956300063
来源期刊	PLOS ONE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258278
推荐引用方式 GB/T 7714	Li, Xiong,Yang, Yunqiang,Ma, Lan,et al. Comparative Proteomics Analyses of Kobresia pygmaea Adaptation to Environment along an Elevational Gradient on the Central Tibetan Plateau[J]. 中国科学院青藏高原研究所,2014,9(6).
APA	Li, Xiong.,Yang, Yunqiang.,Ma, Lan.,Sun, Xudong.,Yang, Shihai.,...&Yang, Yongping.(2014).Comparative Proteomics Analyses of Kobresia pygmaea Adaptation to Environment along an Elevational Gradient on the Central Tibetan Plateau.PLOS ONE,9(6).
MLA	Li, Xiong,et al."Comparative Proteomics Analyses of Kobresia pygmaea Adaptation to Environment along an Elevational Gradient on the Central Tibetan Plateau".PLOS ONE 9.6(2014).