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The role of local environment and geographical distance in determining community composition of arbuscular mycorrhizal fungi at the landscape scale
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Hazard, Christina, Gosling, Paul, van der Gast, Christopher J., Mitchell, Derek T., Doohan, Fiona M. and Bending, G. D. (2013) The role of local environment and geographical distance in determining community composition of arbuscular mycorrhizal fungi at the landscape scale. The ISME Journal, Volume 7 (Number 3). pp. 498-508. doi:10.1038/ismej.2012.127 ISSN 1751-7362.
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Official URL: http://dx.doi.org/10.1038/ismej.2012.127
Abstract
Arbuscular fungi have a major role in directing the functioning of terrestrial ecosystems yet little is known about their biogeographical distribution. The Baas-Becking hypothesis (‘everything is everywhere, but, the environment selects’) was tested by investigating the distribution of arbuscular mycorrhizal fungi (AMF) at the landscape scale and the influence of environmental factors and geographical distance in determining community composition. AMF communities in Trifolium repens and Lolium perenne roots were assessed in 40 geographically dispersed sites in Ireland representing different land uses and soil types. Field sampling and laboratory bioassays were used, with AMF communities characterised using 18S rRNA terminal-restriction fragment length polymorphism. Landscape-scale distribution of AMF was driven by the local environment. AMF community composition was influenced by abiotic variables (pH, rainfall and soil type), but not land use or geographical distance. Trifolium repens and L. perenne supported contrasting communities of AMF, and the communities colonising each plant species were consistent across pasture habitats and over distance. Furthermore, L. perenne AMF communities grouped by soil type within pasture habitats. This is the largest and most comprehensive study that has investigated the landscape-scale distribution of AMF. Our findings support the Baas-Becking hypothesis at the landscape scale and demonstrate the strong influence the local environment has on determining AMF community composition.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
Journal or Publication Title: | The ISME Journal | ||||
Publisher: | Nature Publishing Group | ||||
ISSN: | 1751-7362 | ||||
Official Date: | March 2013 | ||||
Dates: |
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Volume: | Volume 7 | ||||
Number: | Number 3 | ||||
Page Range: | pp. 498-508 | ||||
DOI: | 10.1038/ismej.2012.127 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Environmental ERDTI Programme 2000–2006 |
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