Mycorrhizal specificity, preference, and plasticity of six slipper orchids from South Western China
Yuan, Li1,2; Yang, Zhu L.1; Li, Shu-Yun1; Hu, Hong1; Huang, Jia-Lin1
2010-11-01
发表期刊MYCORRHIZA
ISSN0940-6360
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
资助信息National Natural Science Foundation of China (NSFC) [30770225, 30525002, 30870239]; Yunnan Provincial Government [U0836604]; Chinese Academy of Sciences [KSCX2-YW-Z-033]; Yunnan Social Development Science Program [2007C0012]; National Basic Research Program of China [2009CB522300]
收录类别SCI
语种英语
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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
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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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