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Phylogenetic constrains on mycorrhizal specificity in eight Dendrobium (Orchidaceae) species.

Identifieur interne : 000D39 ( Main/Corpus ); précédent : 000D38; suivant : 000D40

Phylogenetic constrains on mycorrhizal specificity in eight Dendrobium (Orchidaceae) species.

Auteurs : Xiaoke Xing ; Xueting Ma ; Jinxin Men ; Yanhong Chen ; Shunxing Guo

Source :

RBID : pubmed:28299575

English descriptors

Abstract

Plant phylogeny constrains orchid mycorrhizal (OrM) fungal community composition in some orchids. Here, we investigated the structures of the OrM fungal communities of eight Dendrobium species in one niche to determine whether similarities in the OrM fungal communities correlated with the phylogeny of the host plants and whether the Dendrobium-OrM fungal interactions are phylogenetically conserved. A phylogeny based on DNA data was constructed for the eight coexisting Dendrobium species, and the OrM fungal communities were characterized by their roots. There were 31 different fungal lineages associated with the eight Dendrobium species. In total, 82.98% of the identified associations belonging to Tulasnellaceae, and a smaller proportion involved members of the unknown Basidiomycota (9.67%). Community analyses revealed that phylogenetically related Dendrobium tended to interact with a similar set of Tulasnellaceae fungi. The interactions between Dendrobium and Tulasnellaceae fungi were significantly influenced by the phylogenetic relationships among the Dendrobium species. Our results provide evidence that the mycorrhizal specificity in the eight coexisting Dendrobium species was phylogenetically conserved.

DOI: 10.1007/s11427-017-9020-1
PubMed: 28299575

Links to Exploration step

pubmed:28299575

Le document en format XML

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