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dc.contributor.authorBecklin, Katie M.
dc.contributor.authorHertweck, Kate L.
dc.contributor.authorJumpponen, Ari
dc.date.accessioned2012-02-10T22:23:05Z
dc.date.available2012-02-10T22:23:05Z
dc.date.issued2012
dc.identifier.citationBecklin KM, Hertweck KL, and Jumpponen A. 2012. Host identity impacts rhizosphere fungal communities associated with three alpine plant species. Microbial Ecology 63:682-693. http://dx.doi.org/10.1007/s00248-011-9968-7
dc.identifier.urihttp://hdl.handle.net/1808/8740
dc.descriptionThis is the author’s accepted manuscript. The original publication is available at www.springerlink.com. For the publisher’s version go to http://dx.doi.org/10.1007/s00248-011-9968-7. NOTE: The supplementary materials referred to in the text are available for download separately, below.
dc.description.abstractFungal diversity and composition are still relatively unknown in many ecosystems; however, host identity and environmental conditions are hypothesized to influence fungal community assembly. To test these hypotheses we characterized the richness, diversity, and composition of rhizosphere fungi colonizing three alpine plant species, Taraxacum ceratophorum, Taraxacum officinale, and Polemonium viscosum. Roots were collected from open meadow and willow understory habitats at treeline on Pennsylvania Mountain, Colorado, USA. Fungal small subunit ribosomal DNA was sequenced using fungal-specific primers, sample-specific DNA tags, and 454 pyrosequencing. We classified operational taxonomic units (OTUs) as arbuscular mycorrhizal (AMF) or non-arbuscular mycorrhizal (non-AMF) fungi, then tested whether habitat or host identity influenced these fungal communities. Approximately 14% of the sequences represented AMF taxa (44 OTUs) with the majority belonging to Glomus group A and B. NON-AMF sequences represented 186 OTUs belonging to Ascomycota (58%), Basidiomycota (26%), Zygomycota (14%), and Chytridiomycota (2%) phyla. Total AMF and non-AMF richness were similar between habitats, but varied among host species. AMF richness and diversity per root sample also varied among host species and were highest in T. ceratophorum compared to T. officinale and P. viscosum. In contrast, non-AMF richness and diversity per root sample were similar among host species except in the willow understory where diversity was reduced in T. officinale. Fungal community composition was influenced by host identity, but not habitat. Specifically, T. officinale hosted a different AMF community than T. ceratophorum and P. viscosum, while P. viscosum hosted a different non-AMF community than T. ceratophorum and T. officinale. Our results suggest that host identity has a stronger effect on rhizosphere fungi than habitat. Furthermore, although host identity influenced both AMF and non-AMF this effect was stronger for the mutualistic AMF community.
dc.language.isoen_US
dc.publisherSpringer Verlag
dc.titleHost identity impacts rhizosphere fungal communities associated with three alpine plant species
dc.typeArticle
kusw.kuauthorBecklin, Katie M.
kusw.kudepartmentEcology and Evolutionary Biology
kusw.oastatusfullparticipation
dc.identifier.doi10.1007/s00248-011-9968-7
kusw.oaversionScholarly/refereed, author accepted manuscript
kusw.oapolicyThis item meets KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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