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Habitat-driven variation in mycorrhizal communities in the terrestrial orchid genus Dactylorhiza

Jacquemyn, Hans; Waud, Michael; Merckx, Vincent S F T; Brys, Rein; Tyteca, Daniel; Hedrén, Mikael LU and Lievens, Bart (2016) In Scientific Reports 6.
Abstract

Orchid species are critically dependent on mycorrhizal fungi for completion of their life cycle, particularly during the early stages of their development when nutritional resources are scarce. As such, orchid mycorrhizal fungi play an important role in the population dynamics, abundance, and spatial distribution of orchid species. However, less is known about the ecology and distribution of orchid mycorrhizal fungi. In this study, we used 454 amplicon pyrosequencing to investigate ecological and geographic variation in mycorrhizal associations in fourteen species of the orchid genus Dactylorhiza. More specifically, we tested the hypothesis that variation in orchid mycorrhizal communities resulted primarily from differences in habitat... (More)

Orchid species are critically dependent on mycorrhizal fungi for completion of their life cycle, particularly during the early stages of their development when nutritional resources are scarce. As such, orchid mycorrhizal fungi play an important role in the population dynamics, abundance, and spatial distribution of orchid species. However, less is known about the ecology and distribution of orchid mycorrhizal fungi. In this study, we used 454 amplicon pyrosequencing to investigate ecological and geographic variation in mycorrhizal associations in fourteen species of the orchid genus Dactylorhiza. More specifically, we tested the hypothesis that variation in orchid mycorrhizal communities resulted primarily from differences in habitat conditions where the species were growing. The results showed that all investigated Dactylorhiza species associated with a large number of fungal OTUs, the majority belonging to the Tulasnellaceae, Ceratobasidiaceae and Sebacinales. Mycorrhizal specificity was low, but significant variation in mycorrhizal community composition was observed between species inhabiting different ecological habitats. Although several fungi had a broad geographic distribution, Species Indicator Analysis revealed some fungi that were characteristic for specific habitats. Overall, these results indicate that orchid mycorrhizal fungi may have a broad geographic distribution, but that their occurrence is bounded by specific habitat conditions.

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author
organization
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Contribution to journal
publication status
published
subject
in
Scientific Reports
volume
6
publisher
Nature Publishing Group
external identifiers
  • scopus:84997343355
  • wos:000388796400001
ISSN
2045-2322
DOI
10.1038/srep37182
language
English
LU publication?
yes
id
5ea0d4b2-2d9f-420b-872f-48e8bf9b5144
date added to LUP
2016-12-09 13:05:42
date last changed
2017-09-24 05:04:29
@article{5ea0d4b2-2d9f-420b-872f-48e8bf9b5144,
  abstract     = {<p>Orchid species are critically dependent on mycorrhizal fungi for completion of their life cycle, particularly during the early stages of their development when nutritional resources are scarce. As such, orchid mycorrhizal fungi play an important role in the population dynamics, abundance, and spatial distribution of orchid species. However, less is known about the ecology and distribution of orchid mycorrhizal fungi. In this study, we used 454 amplicon pyrosequencing to investigate ecological and geographic variation in mycorrhizal associations in fourteen species of the orchid genus Dactylorhiza. More specifically, we tested the hypothesis that variation in orchid mycorrhizal communities resulted primarily from differences in habitat conditions where the species were growing. The results showed that all investigated Dactylorhiza species associated with a large number of fungal OTUs, the majority belonging to the Tulasnellaceae, Ceratobasidiaceae and Sebacinales. Mycorrhizal specificity was low, but significant variation in mycorrhizal community composition was observed between species inhabiting different ecological habitats. Although several fungi had a broad geographic distribution, Species Indicator Analysis revealed some fungi that were characteristic for specific habitats. Overall, these results indicate that orchid mycorrhizal fungi may have a broad geographic distribution, but that their occurrence is bounded by specific habitat conditions.</p>},
  articleno    = {37182},
  author       = {Jacquemyn, Hans and Waud, Michael and Merckx, Vincent S F T and Brys, Rein and Tyteca, Daniel and Hedrén, Mikael and Lievens, Bart},
  issn         = {2045-2322},
  language     = {eng},
  month        = {11},
  publisher    = {Nature Publishing Group},
  series       = {Scientific Reports},
  title        = {Habitat-driven variation in mycorrhizal communities in the terrestrial orchid genus Dactylorhiza},
  url          = {http://dx.doi.org/10.1038/srep37182},
  volume       = {6},
  year         = {2016},
}