Högberg, Nils
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
Research article2015Peer reviewedOpen access
Convergent losses of decay mechanisms and rapid turnover of symbiosis genes in mycorrhizal mutualists
Kohler, Annegret; Kuo, Alan; Nagy, Laszlo G.; Morin, Emmanuelle; Barry, Kerrie W.; Buscot, Francois; Canback, Bjorn; Choi, Cindy; Cichocki, Nicolas; Clum, Alicia; Colpaert, Jan; Copeland, Alex; Costa, Mauricio D.; Dore, Jeanne; Floudas, Dimitrios; Gay, Gilles; Girlanda, Mariangela; Henrissat, Bernard; Herrmann, Sylvie; Hess, Jaqueline;
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Abstract
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.
Published in
Nature Genetics
2015, Volume: 47, number: 4, pages: 410-415
Publisher: NATURE PUBLISHING GROUP
SLU Authors
UKÄ Subject classification
Genetics
Evolutionary Biology
Publication identifier
DOI: https://doi.org/10.1038/ng.3223
Permanent link to this page (URI)
https://res.slu.se/id/publ/72420