Phylogeographic patterns in Leccinum sect. Scabra and the status of the arctic/alpine species L. rotundifoliae

We investigated inter- and intraspecific phylogenetic relationships in the ectomycorrhizal fungal genus Leccinum section Scabra. Species of this section are exclusively associated with Betula and occur throughout the Northern Hemisphere. We compared the phylogenetic relationships of arctic, alpine,...

Full description

Bibliographic Details
Published in:Mycological Research
Main Authors: den Bakker, H.C., Zuccarello, G.C., Kuyper, T.W., Noordeloos, M.E.
Format: Article in Journal/Newspaper
Language:English
Published: 2007
Subjects:
dna
evolution
model
muscaria
phylogeny
region
sequences
substitutions
Arctic
Online Access:https://research.wur.nl/en/publications/phylogeographic-patterns-in-leccinum-sect-scabra-and-the-status-o
https://doi.org/10.1016/j.mycres.2007.03.008
Description
Summary:We investigated inter- and intraspecific phylogenetic relationships in the ectomycorrhizal fungal genus Leccinum section Scabra. Species of this section are exclusively associated with Betula and occur throughout the Northern Hemisphere. We compared the phylogenetic relationships of arctic, alpine, boreal and temperate accessions of section Scabra based on DNA sequences of the single-copy nuclear gene Gapdh and the multiple-copy nuclear region 5.8S-ITS2. Exclusively arctic lineages were not detected in species that occur both in arctic-alpine or boreal regions, except in L. rotundifoliae that was restricted to cold climates. L. scabrum and L. holopus showed an intercontinental phylogeographic pattern, and L. variicolor showed a pattern unrelated to geographical distribution. Molecular clock estimates indicated that L. rotundifoliae is as old as other species in section Scabra. Individual gene trees suggest that interspecific hybridisation occurred several times in the evolution of section Scabra.

Similar Items