Leaf anatomical structures of Paphiopedilum and Cypripedium and their adaptive significance

doi:10.1007/s10265-010-0372-z

	Leaf anatomical structures of Paphiopedilum and Cypripedium and their adaptive significance
	Guan, Zhi-Jie 1,2; Zhang, Shi-Bao3 ; Guan, Kai-Yun 1; Li, Shu-Yun 1; Hu, Hong1
通讯作者	Hu, H (reprint author), Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
	2011-03-01
发表期刊	JOURNAL OF PLANT RESEARCH
ISSN	0918-9440
卷号	124 期号:2 页码:289-298
摘要	Paphiopedilum and Cypripedium are closely related in phylogeny, but have contrasting leaf traits and habitats. To understand the divergence in leaf traits of Paphiopedilum and Cypripedium and their adaptive significance, we analyzed the leaf anatomical structures, leaf dry mass per area (LMA), leaf lifespan (LL), leaf nitrogen concentration (N(mass)), leaf phosphorus concentration (P(mass)), mass-based light-saturated photosynthetic rate (A(mass)), water use efficiency (WUE), photosynthetic nitrogen use efficiency (PNUE) and leaf construction cost (CC) for six species. Compared with Cypripedium, Paphiopedilum was characterized by drought tolerance derived from its leaf anatomical structures, including fleshy leaves, thick surface cuticles, huge adaxial epidermis cells, lower total stoma area, and sunken stomata. The special leaf structures of Paphiopedilum were accompanied by longer LL; higher LMA, WUE, and CC; and lower N(mass), P(mass), A(mass), and PNUE compared with Cypripedium. Leaf traits in Paphiopedilum helped it adapt to arid and nutrient-poor karst habitats. However, the leaf traits of Cypripedium reflect adaptations to an environment characterized by rich soil, abundant soil water, and significant seasonal fluctuations in temperature and precipitation. The present results contribute to our understanding of the divergent adaptation of leaf traits in slipper orchids, which is beneficial for the conservation of endangered orchids.
关键词	Cypripedium Leaf Anatomical Structure Leaf Trait Paphiopedilum Stomata
学科领域	Plant Sciences
DOI	10.1007/s10265-010-0372-z
收录类别	SCI
语种	英语
WOS记录号	WOS:000289859200009
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/5241
专题	资源植物与生物技术所级重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Kunming 650223, Peoples R China
推荐引用方式 GB/T 7714	Guan, Zhi-Jie,Zhang, Shi-Bao,Guan, Kai-Yun,et al. Leaf anatomical structures of Paphiopedilum and Cypripedium and their adaptive significance[J]. JOURNAL OF PLANT RESEARCH,2011,124(2):289-298.
APA	Guan, Zhi-Jie,Zhang, Shi-Bao,Guan, Kai-Yun,Li, Shu-Yun,&Hu, Hong.(2011).Leaf anatomical structures of Paphiopedilum and Cypripedium and their adaptive significance.JOURNAL OF PLANT RESEARCH,124(2),289-298.
MLA	Guan, Zhi-Jie,et al."Leaf anatomical structures of Paphiopedilum and Cypripedium and their adaptive significance".JOURNAL OF PLANT RESEARCH 124.2(2011):289-298.

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