Evolutionary transition to the ectomycorrhizal habit in the genomes of a hyperdiverse lineage of mushroom-forming fungi

Détails bibliographiques
Publié dans:	The New phytologist. - 1984. - 233(2022), 5 vom: 01. März, Seite 2294-2309
Auteur principal:	Looney, Brian (Auteur)
Autres auteurs:	Miyauchi, Shingo, Morin, Emmanuelle, Drula, Elodie, Courty, Pierre Emmanuel, Kohler, Annegret, Kuo, Alan, LaButti, Kurt, Pangilinan, Jasmyn, Lipzen, Anna, Riley, Robert, Andreopoulos, William, He, Guifen, Johnson, Jenifer, Nolan, Matt, Tritt, Andrew, Barry, Kerrie W, Grigoriev, Igor V, Nagy, László G, Hibbett, David, Henrissat, Bernard, Matheny, P Brandon, Labbé, Jesse, Martin, Francis M
Format:	Article en ligne
Langue:	English
Publié:	2022
Accès à la collection:	The New phytologist
Sujets:	Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Russulaceae Russulales ectomycorrhizal habit evolutionary transition secondary metabolism cluster synteny transposable elements DNA Transposable Elements

Description
Résumé:	© 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation. This article has been contributed to by US Government employees and their work is in the public domain in the USA. The ectomycorrhizal (ECM) symbiosis has independently evolved from diverse types of saprotrophic ancestors. In this study, we seek to identify genomic signatures of the transition to the ECM habit within the hyperdiverse Russulaceae. We present comparative analyses of the genomic architecture and the total and secreted gene repertoires of 18 species across the order Russulales, of which 13 are newly sequenced, including a representative of a saprotrophic member of Russulaceae, Gloeopeniophorella convolvens. The genomes of ECM Russulaceae are characterized by a loss of genes for plant cell wall-degrading enzymes (PCWDEs), an expansion of genome size through increased transposable element (TE) content, a reduction in secondary metabolism clusters, and an association of small secreted proteins (SSPs) with TE 'nests', or dense aggregations of TEs. Some PCWDEs have been retained or even expanded, mostly in a species-specific manner. The genome of G. convolvens possesses some characteristics of ECM genomes (e.g. loss of some PCWDEs, TE expansion, reduction in secondary metabolism clusters). Functional specialization in ECM decomposition may drive diversification. Accelerated gene evolution predates the evolution of the ECM habit, indicating that changes in genome architecture and gene content may be necessary to prime the evolutionary switch
Description:	Date Completed 24.03.2022 Date Revised 24.03.2022 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.17892