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	Physiological responses of Kobresia pygmaea to warming in Qinghai-Tibetan Plateau permafrost region
	Yang, Y. ; Wang, G. X. ; Yang, L. D. ; Guo, J. Y. ; Li, N.
	2012
关键词	Active oxygen species Antioxidant capacities Non-structural carbohydrate Oxidative damage UV-B RADIATION PHASEOLUS-VULGARIS L. GLOBAL CLIMATE-CHANGE OPEN-TOP CHAMBERS WATER-STRESS PROLINE ACCUMULATION INTEGRATED APPROACH HYDROGEN-PEROXIDE POPULUS-CATHAYANA ATMOSPHERIC CO2
DOI	10.1016/j.actao.2012.01.012
英文摘要	Kobresia pygmaea (C.B. Clarke) C.B. Clarke is one dominant herbaceous species in the alpine meadows of the Qinghai-Tibetan Plateau. From 2006 to 2009, a warming experiment was conducted in this permafrost region. Two 2-year warming treatments with an annual average warming of 2.1 degrees C and 4.4 degrees C, and one 4-year warming treatment with an annual average warming of 2.3 degrees C were established to examine physiological responses of K. pygmaea to warming. Our results indicated that 2-years of warming increased malondialdehyde and non-structural carbohydrates in the plants. There was no effect of 2-year warming on electrolyte leakage and free proline content. In the 2-year warming treatment, superoxide dismutase activity and peroxidase activity increased, ascorbate peroxidase activity and ascorbic acid only increased in 2-year high warming treatment, whereas in the 4-year warming treatment, active oxygen species, electrolyte leakage. UV-absorbing compounds and anthocyanins decreased. The 4-year warming treatment also significantly increased non-structural carbonhydrate and free proline accumulation for osmotic adjustment. The results of this study suggest that K. pygmaea could adapt to a warmer environment in the future. (C) 2012 Elsevier Masson SAS. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000302832700015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Ecology; SCI(E); 4; ARTICLE; 109-116; 39
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/161048]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Yang, Y.,Wang, G. X.,Yang, L. D.,et al. Physiological responses of Kobresia pygmaea to warming in Qinghai-Tibetan Plateau permafrost region[J],2012.
APA	Yang, Y.,Wang, G. X.,Yang, L. D.,Guo, J. Y.,&Li, N..(2012).Physiological responses of Kobresia pygmaea to warming in Qinghai-Tibetan Plateau permafrost region..
MLA	Yang, Y.,et al."Physiological responses of Kobresia pygmaea to warming in Qinghai-Tibetan Plateau permafrost region".(2012).

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