Genetic structure of the protist Physarum albescens (Amoebozoa) revealed by multiple markers and genotyping by sequencing.
DNA barcoding
cryptic species
phylogeography
protists
simulation
slime molds
Journal
Molecular ecology
ISSN: 1365-294X
Titre abrégé: Mol Ecol
Pays: England
ID NLM: 9214478
Informations de publication
Date de publication:
01 2022
01 2022
Historique:
revised:
26
09
2021
received:
14
06
2021
accepted:
08
10
2021
pubmed:
23
10
2021
medline:
29
1
2022
entrez:
22
10
2021
Statut:
ppublish
Résumé
Myxomycetes are terrestrial protists with many presumably cosmopolitan species dispersing via airborne spores. A truly cosmopolitan species would suffer from outbreeding depression hampering local adaptation, while locally adapted species with limited distribution would be at a higher risk of extinction in changing environments. Here, we investigate intraspecific genetic diversity and phylogeography of Physarum albescens over the entire Northern Hemisphere. We sequenced 324 field collections of fruit bodies for 1-3 genetic markers (SSU, EF1A, COI) and analysed 98 specimens with genotyping by sequencing. The structure of the three-gene phylogeny, SNP-based phylogeny, phylogenetic networks, and the observed recombination pattern of three independently inherited gene markers can be best explained by the presence of at least 18 reproductively isolated groups, which can be seen as cryptic species. In all intensively sampled regions and in many localities, members of several phylogroups coexisted. Some phylogroups were found to be abundant in only one region and completely absent in other well-studied regions, and thus may represent regional endemics. Our results demonstrate that the widely distributed myxomycete species Ph. albescens represents a complex of at least 18 cryptic species, and some of these seem to have a limited geographical distribution. In addition, the presence of groups of presumably clonal specimens suggests that sexual and asexual reproduction coexist in natural populations of myxomycetes.
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
372-390Subventions
Organisme : Ministry of Science and Higher Education of the Russian Federation
ID : 075-15-2021-1056
Organisme : Deutsche Forschungsgemeinschaft
ID : DFG
Organisme : Deutsche Forschungsgemeinschaft
ID : RTG 2010 RESPONSE
Organisme : Deutsche Forschungsgemeinschaft
ID : SCHN1080/2-1
Organisme : Komarov Botanical Institute, Russian Academy of Sciences
ID : AAAA-A19-119020890079-6
Informations de copyright
© 2021 The Authors. Molecular Ecology published by John Wiley & Sons Ltd.
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