Parasites dominate hyperdiverse soil protist communities in Neotropical rainforests

Mahé Frédéric, de Vargas Colomban, Bass David, Czech Lucas, Stamatakis Alexandro, Lara Enrique, Singer David, Mayor Jordan, Bunge John, Sernaker Sarah, Siemensmeyer Tobias, Trautmann Isabelle, Romac Sarah, Berney Cédric, Kozlov Alexey, Mitchell Edward A. D., Seppey Christophe V. W., Egge Elianne, Lentendu Guillaume, Wirth Rainer, Trueba Gabriel, Dunthorn Micah. 2017. Parasites dominate hyperdiverse soil protist communities in Neotropical rainforests. Nature Ecology and Evolution, 1 (4):0091, 8 p.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q4, Sujet : ECOLOGY / Quartile : Q4, Sujet : EVOLUTIONARY BIOLOGY

Abstract : High animal and plant richness in tropical rainforest communities has long intrigued naturalists. It is unknown if similar hyperdiversity patterns are reflected at the microbial scale with unicellular eukaryotes (protists). Here we show, using environmental metabarcoding of soil samples and a phylogeny-aware cleaning step, that protist communities in Neotropical rainforests are hyperdiverse and dominated by the parasitic Apicomplexa, which infect arthropods and other animals. These host-specific parasites potentially contribute to the high animal diversity in the forests by reducing population growth in a density-dependent manner. By contrast, too few operational taxonomic units (OTUs) of Oomycota were found to broadly drive high tropical tree diversity in a host-specific manner under the Janzen-Connell model. Extremely high OTU diversity and high heterogeneity between samples within the same forests suggest that protists, not arthropods, are the most diverse eukaryotes in tropical rainforests. Our data show that protists play a large role in tropical terrestrial ecosystems long viewed as being dominated by macroorganisms.

Mots-clés géographiques Agrovoc : Amérique du Sud, Amérique centrale, Costa Rica, Panama

Classification Agris : K01 - Forestry - General aspects
P34 - Soil biology

Champ stratégique Cirad : Axe 6 (2014-2018) - Sociétés, natures et territoires

Auteurs et affiliations

  • Mahé Frédéric, CIRAD-BIOS-UMR LSTM (FRA) ORCID: 0000-0002-2808-0984
  • de Vargas Colomban, Université Paris-Sorbonne (FRA)
  • Bass David, Natural History Museum (GBR)
  • Czech Lucas, Heidelberg Institute for Theoretical Studies (DEU)
  • Stamatakis Alexandro, Heidelberg Institute for Theoretical Studies (DEU)
  • Lara Enrique, Université de Neuchâtel (CHE)
  • Singer David, Université de Neuchâtel (CHE)
  • Mayor Jordan, Swedish University of Agricultural Sciences (SWE)
  • Bunge John, Cornell University (USA)
  • Sernaker Sarah, Cornell University (USA)
  • Siemensmeyer Tobias, University of Kaiserslautern (DEU)
  • Trautmann Isabelle, University of Kaiserslautern (DEU)
  • Romac Sarah, CNRS (FRA)
  • Berney Cédric, Université Paris-Sorbonne (FRA)
  • Kozlov Alexey, Heidelberg Institute for Theoretical Studies (DEU)
  • Mitchell Edward A. D., Université de Neuchâtel (CHE)
  • Seppey Christophe V. W., Université de Neuchâtel (CHE)
  • Egge Elianne, University of Oslo (NOR)
  • Lentendu Guillaume, University of Kaiserslautern (DEU)
  • Wirth Rainer, University of Kaiserslautern (DEU)
  • Trueba Gabriel, Universidad San Francisco de Quito (ECU)
  • Dunthorn Micah, University of Kaiserslautern (DEU) - auteur correspondant

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