Ecophysiological significance of leaf traits in Cypripedium and Paphiopedilum

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 资源植物与生物技术所级重点实验室

	Ecophysiological significance of leaf traits in Cypripedium and Paphiopedilum
	Chang, Wei 1,3; Zhang, Shi-Bao2 ; Li, Shu-Yun 1; Hu, Hong1
刊名	PHYSIOLOGIA PLANTARUM
	2011
卷号	141 期号:1 页码:30-39
关键词	NITROGEN-USE EFFICIENCY STOMATAL CONDUCTANCE CARBON GAIN LIFE-SPAN MESOPHYLL CONDUCTANCE CONSTRUCTION COSTS GAS-EXCHANGE PHOTOSYNTHESIS PLANTS ORCHIDACEAE
ISSN号	0031-9317
通讯作者	Hu, H (reprint author), Chinese Acad Sci, Key Lab Econ Plants & Biotechnol, Kunming Inst Bot, Kunming 650204, Peoples R China
英文摘要	There is a close phylogenetic relationship between Paphiopedilum and Cypripedium, but these two genera diverge considerably in terms of their leaf traits. To understand the evolution and the ecophysiological significance of leaf traits, we investigated the leaf traits of three Paphiopedilum species and three Cypripedium species in southwestern China. Cypripedium tibeticum and C. flavum showed a significantly higher light-saturated photosynthetic rate (P(max)), stomatal conductance (g(s)), photosynthetic nitrogen utilization efficiency (PNUE) and specific leaf area (SLA), but lower ratio of leaf carbon to nitrogen content (C/N) and leaf construction cost (CC) than Paphiopedilum. These leaf traits of Cypripedium suggest its high resource use efficiency and high growth rate reflecting adaptation to a short growing period and abundant soil nutrients and water in alpine habitats. Conversely, the low P(max), g(s), PNUE, SLA and the ratio of chlorophyll a to chlorophyll b (Chl a/b), but high leaf nitrogen investment in light-harvesting component (P(L)), CC and C/N in Paphiopedilum indicate its adaptation to a low light, nutrient-poor and limited soil water habitats in karst areas. As a sympatric species of Paphiopedilum, although C. lentiginosum retained the phylogenetic leaf traits of Cypripedium, such as high mass-based light-saturated photosynthetic rate (P(max-M)), g(s) and PNUE, it had some similar leaf traits to those of Paphiopedilum, such as low mesophyll conductance (g(m)) and Chl a/b, and high P(L), which reflected an adaptation to the same habitat. Our results show that the evolution of the leaf traits of Paphiopedilum and Cypripedium are shaped by both phylogeny and environment.
学科主题	Plant Sciences
类目[WOS]	Plant Sciences
研究领域[WOS]	Plant Sciences
关键词[WOS]	NITROGEN-USE EFFICIENCY ; STOMATAL CONDUCTANCE ; CARBON GAIN ; LIFE-SPAN ; MESOPHYLL CONDUCTANCE ; CONSTRUCTION COSTS ; GAS-EXCHANGE ; PHOTOSYNTHESIS ; PLANTS ; ORCHIDACEAE
收录类别	SCI
资助信息	NSFC[30870239, 30770225]; Knowledge Innovation Project[KSCX2-YW-Z-033]; Yunnan Social Development Science Program[2007C001Z]
语种	英语
WOS记录号	WOS:000285251300004
公开日期	2012-04-10
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/5257]
专题	昆明植物研究所_资源植物与生物技术所级重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Econ Plants & Biotechnol, Kunming Inst Bot, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Kunming 650223, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Chang, Wei,Zhang, Shi-Bao,Li, Shu-Yun,et al. Ecophysiological significance of leaf traits in Cypripedium and Paphiopedilum[J]. PHYSIOLOGIA PLANTARUM,2011,141(1):30-39.
APA	Chang, Wei,Zhang, Shi-Bao,Li, Shu-Yun,&Hu, Hong.(2011).Ecophysiological significance of leaf traits in Cypripedium and Paphiopedilum.PHYSIOLOGIA PLANTARUM,141(1),30-39.
MLA	Chang, Wei,et al."Ecophysiological significance of leaf traits in Cypripedium and Paphiopedilum".PHYSIOLOGIA PLANTARUM 141.1(2011):30-39.