Adaptability to elevated temperature and nitrogen addition is greater in a high-elevation population than in a low-elevation population of Hippophae rhamnoides

	Adaptability to elevated temperature and nitrogen addition is greater in a high-elevation population than in a low-elevation population of Hippophae rhamnoides
	Li, Yan ; Zhao, Hongxia ; Duan, Baoli ; Korpelainen, Helena ; Li, Chunyang
刊名	TREES-STRUCTURE AND FUNCTION
	2011
卷号	25 期号:6 页码:1073-1082
关键词	Antioxidant enzymes Chlorophyll pigments Gas exchange Growth responses Water use efficiency
ISSN号	0931-1890
通讯作者	Li, CY (reprint author), Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China.
产权排序	1
英文摘要	Hippophae rhamnoides L. is a broadleaf deciduous woody shrub occurring in southwest China, where it has been widely used in ecological restoration. In this study we investigated growth and physiological responses of 2-year-old healthy seedlings to elevated temperature, nitrogen (N) addition and their combination in two contrasting populations from high and low elevations. In closed-top chamber experiments, two populations were subjected to two temperature conditions (ambient temperature and temperature elevated by 2.2 +/- 0.2 degrees C) and two N levels (0 and 25 g N m(-2) a(-1)). Compared with the control, increases in total leaf area (TLA), total chlorophyll content (TC), light-saturated photosynthetic rate (P-max), guaiacol peroxidase activity (POD), catalase activity (CAT) and carbon isotope composition (delta C-13) were greater in the high-elevation population than in the low-elevation population under elevated temperature. On the other hand, decreases in root and shoot biomass ratio (RS), TC, P-max, light saturation point (L-SP), light compensation point (L-CP), superoxide dismutase (SOD), POD, CAT and delta C-13 were lower in the high-elevation population than in the low-elevation population under N addition. Moreover, the combination of elevated temperature and N addition decreased RS, P-max, apparent quantum efficiency (Phi), SOD, POD and delta C-13 significantly more in the low-elevation population than in the high-elevation population. These results demonstrated that there are different adaptive strategies among H. rhamnoides populations, the high-elevation population exhibiting higher adaptability to elevated temperature and N addition than the low-elevation population.
学科主题	Forestry
收录类别	SCI
资助信息	National Natural Science Foundation of China[30930075]
语种	英语
WOS记录号	WOS:000300083000012
公开日期	2012-11-09
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/23420]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Li, Yan,Zhao, Hongxia,Duan, Baoli,et al. Adaptability to elevated temperature and nitrogen addition is greater in a high-elevation population than in a low-elevation population of Hippophae rhamnoides[J]. TREES-STRUCTURE AND FUNCTION,2011,25(6):1073-1082.
APA	Li, Yan,Zhao, Hongxia,Duan, Baoli,Korpelainen, Helena,&Li, Chunyang.(2011).Adaptability to elevated temperature and nitrogen addition is greater in a high-elevation population than in a low-elevation population of Hippophae rhamnoides.TREES-STRUCTURE AND FUNCTION,25(6),1073-1082.
MLA	Li, Yan,et al."Adaptability to elevated temperature and nitrogen addition is greater in a high-elevation population than in a low-elevation population of Hippophae rhamnoides".TREES-STRUCTURE AND FUNCTION 25.6(2011):1073-1082.