Ectomycorrhizal ecology is imprinted in the genome of the dominant symbiotic fungus Cenococcum geophilum

Martina Peter (), Annegret Kohler, Robin A. Ohm, Alan Kuo, Jennifer Krützmann, Emmanuelle Morin, Matthias Arend, Kerrie W. Barry, Manfred Binder, Cindy Choi, Alicia Clum, Alex Copeland, Nadine Grisel, Sajeet Haridas, Tabea Kipfer, Kurt LaButti, Erika Lindquist, Anna Lipzen, Renaud Maire, Barbara Meier, Sirma Mihaltcheva, Virginie Molinier, Claude Murat, Stefanie Pöggeler, C. Alisha Quandt, Christoph Sperisen, Andrew Tritt, Emilie Tisserant, Pedro W. Crous, Bernard Henrissat, Uwe Nehls, Simon Egli, Joseph W. Spatafora, Igor V. Grigoriev and Francis M. Martin ()
Additional contact information
Martina Peter: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Annegret Kohler: INRA, UMR INRA-Université de Lorraine ‘Interactions Arbres/Microorganismes’, Laboratoire d’Excellence ARBRE, INRA-Nancy
Robin A. Ohm: US Department of Energy Joint Genome Institute (JGI)
Alan Kuo: US Department of Energy Joint Genome Institute (JGI)
Jennifer Krützmann: University of Bremen, Botany, Leobenerstr. 2
Emmanuelle Morin: INRA, UMR INRA-Université de Lorraine ‘Interactions Arbres/Microorganismes’, Laboratoire d’Excellence ARBRE, INRA-Nancy
Matthias Arend: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Kerrie W. Barry: US Department of Energy Joint Genome Institute (JGI)
Manfred Binder: CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8
Cindy Choi: US Department of Energy Joint Genome Institute (JGI)
Alicia Clum: US Department of Energy Joint Genome Institute (JGI)
Alex Copeland: US Department of Energy Joint Genome Institute (JGI)
Nadine Grisel: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Sajeet Haridas: US Department of Energy Joint Genome Institute (JGI)
Tabea Kipfer: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Kurt LaButti: US Department of Energy Joint Genome Institute (JGI)
Erika Lindquist: US Department of Energy Joint Genome Institute (JGI)
Anna Lipzen: US Department of Energy Joint Genome Institute (JGI)
Renaud Maire: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Barbara Meier: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Sirma Mihaltcheva: US Department of Energy Joint Genome Institute (JGI)
Virginie Molinier: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Claude Murat: INRA, UMR INRA-Université de Lorraine ‘Interactions Arbres/Microorganismes’, Laboratoire d’Excellence ARBRE, INRA-Nancy
Stefanie Pöggeler: Institute of Microbiology and Genetics, Georg-August-University Göttingen
C. Alisha Quandt: University of Michigan
Christoph Sperisen: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Andrew Tritt: US Department of Energy Joint Genome Institute (JGI)
Emilie Tisserant: INRA, UMR INRA-Université de Lorraine ‘Interactions Arbres/Microorganismes’, Laboratoire d’Excellence ARBRE, INRA-Nancy
Pedro W. Crous: CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8
Bernard Henrissat: Centre National de la Recherche Scientifique, UMR 7257
Uwe Nehls: University of Bremen, Botany, Leobenerstr. 2
Simon Egli: Swiss Federal Research Institute WSL, Forest Dynamics, Zuercherstrasse 111
Joseph W. Spatafora: Oregon State University
Igor V. Grigoriev: US Department of Energy Joint Genome Institute (JGI)
Francis M. Martin: INRA, UMR INRA-Université de Lorraine ‘Interactions Arbres/Microorganismes’, Laboratoire d’Excellence ARBRE, INRA-Nancy

Nature Communications, 2016, vol. 7, issue 1, 1-15

Abstract: Abstract The most frequently encountered symbiont on tree roots is the ascomycete Cenococcum geophilum, the only mycorrhizal species within the largest fungal class Dothideomycetes, a class known for devastating plant pathogens. Here we show that the symbiotic genomic idiosyncrasies of ectomycorrhizal basidiomycetes are also present in C. geophilum with symbiosis-induced, taxon-specific genes of unknown function and reduced numbers of plant cell wall-degrading enzymes. C. geophilum still holds a significant set of genes in categories known to be involved in pathogenesis and shows an increased genome size due to transposable elements proliferation. Transcript profiling revealed a striking upregulation of membrane transporters, including aquaporin water channels and sugar transporters, and mycorrhiza-induced small secreted proteins (MiSSPs) in ectomycorrhiza compared with free-living mycelium. The frequency with which this symbiont is found on tree roots and its possible role in water and nutrient transport in symbiosis calls for further studies on mechanisms of host and environmental adaptation.

Date: 2016
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DOI: 10.1038/ncomms12662

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