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Contrasting demographic histories revealed in two invasive populations of the dry rot fungus Serpula lacrymans

Skrede, Inger and Murat, Claude and Hess, Jaqueline and Maurice, Sundy and Sonstebo, Jorn Henrik and Kohler, Annegret and Barry-Etienne, Dominique and Eastwood, Dan and Högberg, Nils and Martin, Francis and Kauserud, Havard (2021). Contrasting demographic histories revealed in two invasive populations of the dry rot fungus Serpula lacrymans. Molecular Ecology. 30 , 2772-2789
[Research article]

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Abstract

Globalization and international trade have impacted organisms around the world leading to a considerable number of species establishing in new geographic areas. Many organisms have taken advantage of human-made environments, including buildings. One such species is the dry rot fungus Serpula lacrymans, which is the most aggressive wood-decay fungus in indoor environments in temperate regions. Using population genomic analyses of 36 full genome sequenced isolates, we demonstrated that European and Japanese isolates are highly divergent and the populations split 3000-19,000 generations ago, probably predating human influence. Approximately 250 generations ago, the European population went through a tight bottleneck, probably corresponding to the fungus colonization of the built environment in Europe. The demographic history of these populations, probably lead to low adaptive potential. Only two loci under selection were identified using a F-st outlier approach, and selective sweep analyses identified three loci with extended haplotype homozygosity. The selective sweep analyses found signals in genes possibly related to decay of various substrates in Japan and in genes involved DNA replication and protein modification in Europe. Our results suggest that the dry rot fungus independently established in indoor environments in Europe and Japan and that invasive species can potentially establish large populations in new habitats based on a few colonizing individuals.

Authors/Creators:Skrede, Inger and Murat, Claude and Hess, Jaqueline and Maurice, Sundy and Sonstebo, Jorn Henrik and Kohler, Annegret and Barry-Etienne, Dominique and Eastwood, Dan and Högberg, Nils and Martin, Francis and Kauserud, Havard
Title:Contrasting demographic histories revealed in two invasive populations of the dry rot fungus Serpula lacrymans
Series Name/Journal:Molecular Ecology
Year of publishing :2021
Volume:30
Page range:2772-2789
Number of Pages:18
Publisher:WILEY
ISSN:0962-1083
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:demographic inference, dry rot, fungi, population genomics, selection
URN:NBN:urn:nbn:se:slu:epsilon-p-112009
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112009
Additional ID:
Type of IDID
DOI10.1111/mec.15934
Web of Science (WoS)000650228100001
ID Code:24790
Faculty:S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:02 Jul 2021 14:25
Metadata Last Modified:31 Jul 2021 02:24

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