Mycorrhizal specificity, preference, and plasticity of six slipper orchids from South Western China

doi:10.1007/s00572-010-0307-5

	Mycorrhizal specificity, preference, and plasticity of six slipper orchids from South Western China
	Yuan, Li 1,2; Yang, Zhu L.1 ; Li, Shu-Yun 1; Hu, Hong1 ; Huang, Jia-Lin1
通讯作者	huhong@mail.kib.ac.cn
	2010-11-01
发表期刊	MYCORRHIZA
ISSN	0940-6360
卷号	20 期号:8 页码:559-568
摘要	Mycorrhizal fungi of six endangered species, Paphiopedilum micranthum, Paphiopedilum armeniacum, Paphiopedilum dianthum, Cypripedium flavum, Cypripedium guttatum, and Cypripedium tibeticum, from two closely related genera in the Orchidaceae from Southwestern China, were characterized using the nuclear internal transcribed spacer (ITS) and part of the large subunit gene of mitochondrial rDNA (mtLSU) sequences. The most frequently detected fungi belonged to the Tulasnellaceae. These fungi were represented by 25 ITS sequence types and clustered into seven major clades in the phylogenetic analysis of 5.8S sequences. Species of Paphiopedilum and Cypripedium shared no fungal ITS sequence types in common, but their fungal taxa sometimes occurred in the same major clade of the 5.8S phylogenetic tree. Although it had several associated fungal ITS sequence types in a studied plot, each orchid species had in general only a single dominant type. The fungal sequence type spectra of different species of Paphiopedilum from similar habitats sometimes overlapped; however, the dominant sequence types differed among the species and so did the sequence-type spectra within Cypripedium. Orchids of P micranthum and P. armeniacum transplanted from the field and grown in two greenhouses had a greater number of mycorrhizal associations than those sampled directly from the field. Root specimens from P micranthum taken from the greenhouses were preferably associated with mycobionts of the Tulasnella calospora complex, while those from the field had mycorrhizal associations of other tulasnelloid taxa. Such plasticity in mycorrhizal associations makes ex situ conservation or even propagation by means of mycorrhization of axenically grown seedlings possible.
关键词	Cypripedium Molecular Identification Sequence Type Paphiopedilum Tulasnellaceae Tulasnella Calospora
学科领域	Mycology
DOI	10.1007/s00572-010-0307-5
收录类别	SCI
语种	英语
WOS记录号	WOS:000284189700005
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/3038
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Li,Yang, Zhu L.,Li, Shu-Yun,et al. Mycorrhizal specificity, preference, and plasticity of six slipper orchids from South Western China[J]. MYCORRHIZA,2010,20(8):559-568.
APA	Yuan, Li,Yang, Zhu L.,Li, Shu-Yun,Hu, Hong,&Huang, Jia-Lin.(2010).Mycorrhizal specificity, preference, and plasticity of six slipper orchids from South Western China.MYCORRHIZA,20(8),559-568.
MLA	Yuan, Li,et al."Mycorrhizal specificity, preference, and plasticity of six slipper orchids from South Western China".MYCORRHIZA 20.8(2010):559-568.

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