Mycorrhiza

, Volume 27, Issue 3, pp 273–282

Phylogenetic structure of arbuscular mycorrhizal fungal communities along an elevation gradient

  • Cameron P. Egan
  • Ragan M. Callaway
  • Miranda M. Hart
  • Jason Pither
  • John Klironomos
Original Article

DOI: 10.1007/s00572-016-0752-x

Cite this article as:
Egan, C.P., Callaway, R.M., Hart, M.M. et al. Mycorrhiza (2017) 27: 273. doi:10.1007/s00572-016-0752-x

Abstract

Despite the importance of arbuscular mycorrhizal (AM) fungi within terrestrial ecosystems, we know little about how natural AM fungal communities are structured. To date, the majority of studies examining AM fungal community diversity have focused on single habitats with similar environmental conditions, with relatively few studies having assessed the diversity of AM fungi over large-scale environmental gradients. In this study, we characterized AM fungal communities in the soil along a high-elevation gradient in the North American Rocky Mountains. We focused on phylogenetic patterns of AM fungal communities to gain insight into how AM fungal communities are naturally assembled. We found that alpine AM fungal communities had lower phylogenetic diversity relative to lower elevation communities, as well as being more heterogeneous in composition than either treeline or subalpine communities. AM fungal communities were phylogenetically clustered at all elevations sampled, suggesting that environmental filtering, either selection by host plants or fungal niches, is the primary ecological process structuring communities along the gradient.

Keywords

Arbuscular mycorrhizal fungi Elevation gradients Community phylogenetics Mycorrhizal ecology 454 pyrosequencing 

Supplementary material

572_2016_752_MOESM1_ESM.docx (491 kb)
Fig S1(DOCX 491 kb)
572_2016_752_MOESM2_ESM.docx (172 kb)
Fig S2(DOCX 171 kb)
572_2016_752_MOESM3_ESM.docx (101 kb)
Fig S3(DOCX 100 kb)
572_2016_752_MOESM4_ESM.docx (18 kb)
Table S1(DOCX 17 kb)

Funding information

Funder NameGrant NumberFunding Note
National Sciences and Engineering Research Council of Canada
  • Discovery grant
  • Discovery grant
  • Discovery grant

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Cameron P. Egan
    • 1
  • Ragan M. Callaway
    • 2
  • Miranda M. Hart
    • 1
  • Jason Pither
    • 1
  • John Klironomos
    • 1
  1. 1.Department of BiologyUniversity of British Columbia, Okanagan campusKelownaCanada
  2. 2.Division of Biological Sciences and the Institute on EcosystemsUniversity of MontanaMissoulaUSA

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