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Article Dans Une Revue Insects Année : 2019

Do Host Plant and Associated Ant Species Affect Microbial Communities in Myrmecophytes?

Résumé

Ant-associated microorganisms can play crucial and often overlooked roles, and given the diversity of interactions that ants have developed, the study of the associated microbiomes is of interest. We focused here on specialist plant-ant species of the genus Allomerus that grow a fungus to build galleries on their host-plant stems. Allomerus-inhabited domatia, thus, might be a rich arena for microbes associated with the ants, the plant, and the fungus. We investigated the microbial communities present in domatia colonised by four arboreal ants: Allomerus decemarticulatus, A. octoarticulatus, A. octoarticulatus var. demerarae, and the non-fungus growing plant-ant Azteca sp. cf. depilis, inhabiting Hirtella physophora or Cordia nodosa in French Guiana. We hypothesized that the microbial community will differ among these species. We isolated microorganisms from five colonies of each species, sequenced the 16S rRNA or Internal TranscribedSpacer (ITS) regions, and described both the alpha and beta diversities. We identified 69 microbial taxa, which belong to five bacterial and two fungal phyla. The most diverse phyla were Proteobacteria and Actinobacteria. The microbial community of Azteca cf. depilis and Allomerus spp. differed in composition and richness. Geographical distance affected microbial communities and richness but plant species did not. Actinobacteria were only associated with Allomerus spp
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Dates et versions

hal-02362920 , version 1 (14-11-2019)

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Mario Ruiz-González, Céline Leroy, Alain Dejean, Hervé Gryta, Patricia Jargeat, et al.. Do Host Plant and Associated Ant Species Affect Microbial Communities in Myrmecophytes?. Insects, 2019, 10 (11), pp.391. ⟨10.3390/insects10110391⟩. ⟨hal-02362920⟩
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