Тип публикации: статья из журнала

Год издания: 2023

Идентификатор DOI: 10.1093/gbe/evad136

Ключевые слова: Hymenochaetaceae, white rot, genomics, Coltricia, ecological diversity, transposable elements

Аннотация: To elucidate the genomic traits of ecological diversification in the Hymenochaetales, we sequenced 15 new genomes, with attention to ectomycorrhizal (EcM) Coltricia species. Together with published data, 32 genomes, including 31 Hymenochaetales and one outgroup, were comparatively analyzed in total. Compared with those of parasiticПоказать полностьюand saprophytic members, EcM species have significantly reduced number of plant cell wall degrading enzyme genes, and expanded transposable elements, genome sizes, small secreted proteins, and secreted proteases. EcM species still retain some of secreted carbohydrate-active enzymes (CAZymes) and have lost the key secreted CAZymes to degrade lignin and cellulose, while possess a strong capacity to degrade a microbial cell wall containing chitin and peptidoglycan. There were no significant differences in secreted CAZymes between fungi growing on gymnosperms and angiosperms, suggesting that the secreted CAZymes in the Hymenochaetales evolved before differentiation of host trees into gymnosperms and angiosperms. Nevertheless, parasitic and saprophytic species of the Hymenochaetales are very similar in many genome features, which reflect their close phylogenetic relationships both being white rot fungi. Phylogenomic and molecular clock analyses showed that the EcM genus Coltricia formed a clade located at the base of the Hymenochaetaceae and divergence time later than saprophytic species. And Coltricia remains one to two genes of AA2 family. These indicate that the ancestors of Coltricia appear to have originated from saprophytic ancestor with the ability to cause a white rot. This study provides new genomic data for EcM species and insights into the ecological diversification within the Hymenochaetales based on comparative genomics and phylogenomics analyses.

Журнал: Genome Biology and Evolution

Выпуск журнала: Т. 15, № 8

ISSN журнала: 17596653

• Zhao H. (Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University)
• Dai Y.-C. (Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University)
• Wu F. (Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University)
• Liu X.-Y. (College of Life Sciences, Shandong Normal University)
• Maurice S. (University of Oslo)
• Krutovsky K.V. (Federal State Budgetary Educational Institution of Higher Professional Education Voronezh State Forestry Engineering University named after G.F. Morozov)
• Pavlov Igor N. (Reshetnev Siberian State University of Science and Technology)
• Lindner Daniel L. (Center for Forest Mycology Research)
• Martin Francis M. (Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE-GrandEst-Nancy)
• Yuan Y. (Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University)

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