Convergent losses of decay mechanisms and rapid turnover of symbiosis genes in mycorrhizal mutualists - Archive ouverte HAL
Article Dans Une Revue Nature Genetics Année : 2015

Convergent losses of decay mechanisms and rapid turnover of symbiosis genes in mycorrhizal mutualists

Annegret Kohler
Alan Kuo
Emmanuelle Morin
Jeanne Dore
Kurt Labutti
Anna Lipzen
Claude Murat
Anne Pringle
  • Fonction : Auteur
François Rineau
  • Fonction : Auteur
  • PersonId : 1136634
Hui Sun
  • Fonction : Auteur
Igor V. Grigoriev
  • Fonction : co dernier-auteur
David S. Hibbett
  • Fonction : co dernier-auteur
Francis Martin

Résumé

To elucidate the genetic bases of mycorrhizal lifestyle evolution, we sequenced new fungal genomes, including 13 ectomycorrhizal (ECM), orchid (ORM) and ericoid (ERM) species, and five saprotrophs, which we analyzed along with other fungal genomes. Ectomycorrhizal fungi have a reduced complement of genes encoding plant cell wall-degrading enzymes (PCWDEs), as compared to their ancestral wood decayers. Nevertheless, they have retained a unique array of PCWDEs, thus suggesting that they possess diverse abilities to decompose lignocellulose. Similar functional categories of nonorthologous genes are induced in symbiosis. Of induced genes, 7-38% are orphan genes, including genes that encode secreted effector-like proteins. Convergent evolution of the mycorrhizal habit in fungi occurred via the repeated evolution of a 'symbiosis toolkit', with reduced numbers of PCWDEs and lineage-specific suites of mycorrhiza-induced genes.
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hal-02639336 , version 1 (28-05-2020)

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Annegret Kohler, Alan Kuo, Laszlo G. Nagy, Emmanuelle Morin, Kerrie W. Barry, et al.. Convergent losses of decay mechanisms and rapid turnover of symbiosis genes in mycorrhizal mutualists. Nature Genetics, 2015, 47 (4), pp.410-U176. ⟨10.1038/ng.3223⟩. ⟨hal-02639336⟩
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