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Title: An arctic community of symbiotic fungi assembled by long-distance dispersers: phylogenetic diversity of ectomycorrhizal basidiomycetes in Svalbard based on soil and sporocarp DNA

Author: Geml, J.; Timling, I.; Robinson, C.H.; Lennon, N.; Nusbaum, H.C.; Brochmann, C.; Noordeloos, M.E.; Taylor, D.L.

Date: 2011

Source: Journal of Biogeography. 39: 74-88. doi: 1 0.1111/j.1365-2699.20 11 02588.x

Publication Series: Scientific Journal (JRNL)

Description: Current evidence from temperate studies suggests that ectomycorrhizal (ECM) fungi require overland routes for migration because of their obligate symbiotic associations with woody plants. Despite their key roles in arctic ecosystems, the phylogenetic diversity and phylogeography of arctic ECM fungi remains little known. Here we assess the phylogenetic diversity of ECM communities in an isolated, formerly glaciated, high arctic archipelago, and provide explanations for their phylogeographic origins. Our results indicate numerous recent colonization events and suggest that long-distance, transoceanic dispersal is widespread in arctic ECM fungi, which differs markedly from the currently prevailing view on the dispersal capabilities of ECM fungi. Our molecular evidence indicates that long-distance dispersal has probably played a major role in the phylogeographic history of some ECM fungi in the Northern Hemisphere. Our results may have implications for studies on the biodiversity, ecology and conservation of arctic fungi in general.

Keywords: Arctic, biodiversity, climate change, dispersal, fungi, gene flow, ITS rDNA, long-distance dispersal, migration, phylogeography

Publication Notes:

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  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Geml, Jozsef; Timling, Ina; Robinson, Clare H.; Lennon, Niall; Nusbaum, H. Chad; Brochmann, Christian; Noordeloos, Machiel E.; Taylor, D. Lee. 2011. An arctic community of symbiotic fungi assembled by long-distance dispersers: phylogenetic diversity of ectomycorrhizal basidiomycetes in Svalbard based on soil and sporocarp DNA. Journal of Biogeography. 39: 74-88.

 


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