Identity of the subalpine-subarctic corticioid fungus Megalocystidium leucoxanthum (Russulales, Basidiomycota) and six related species

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dc.contributor.author Spirin, Viacheslav
dc.contributor.author Volobuev, Sergey
dc.contributor.author Malysheva, Vera
dc.contributor.author Miettinen, Otto
dc.contributor.author Kotiranta, Heikki
dc.contributor.author Larsson, Karl-Henrik
dc.date.accessioned 2021-08-20T09:24:01Z
dc.date.available 2021-08-20T09:24:01Z
dc.date.issued 2021-06-24
dc.identifier.citation Spirin , V , Volobuev , S , Malysheva , V , Miettinen , O , Kotiranta , H & Larsson , K-H 2021 , ' Identity of the subalpine-subarctic corticioid fungus Megalocystidium leucoxanthum (Russulales, Basidiomycota) and six related species ' , Plant ecology and evolution , vol. 154 , no. 2 , pp. 231-244 . https://doi.org/10.5091/plecevo.2021.1857
dc.identifier.other PURE: 167746789
dc.identifier.other PURE UUID: 125046f0-6d4b-4065-ab0e-1af9602cabfc
dc.identifier.other WOS: 000672834300008
dc.identifier.other ORCID: /0000-0001-7502-710X/work/98750120
dc.identifier.other ORCID: /0000-0001-5436-6997/work/98750361
dc.identifier.uri http://hdl.handle.net/10138/333357
dc.description.abstract Background and aims - To date, Megalocystidium leucoxanthum, a corticioid fungus originally described from the Italian Alps, was considered as a widely distributed species inhabiting numerous angiosperm hosts in the northern hemisphere. Its specimens collected in different geographic areas and from various host species revealed a high morphological variability and thus obfuscated differences from the closely related M. luridum. The objective of this study was to re-establish M. leucoxanthum based on newly collected and sequenced specimens and clarify the identity of morphologically deviating collections previously ascribed to this species. Material and methods - In total, 87 specimens of Megalocystidium spp. (including two historical types) were studied by morphological methods. Their phylogenetic relations were investigated based on DNA sequences (nrITS, nrLSU, and tef1) of 29 specimens. Key results - Based on morphological, ecological and DNA data, we showed M. leucoxanthum sensu typi is a rare species restricted to Alnus alnobetula in subalpine and subarctic zones. Consequently, records from other hosts (mostly representatives of Salicaceae) belong to three other species, M. olens, M. perticatum, and M. salicis, described as new to science. The fourth newly introduced species, M. pellitum, occurs on the same host tree as M. leucoxanthum but it can be separated from the latter due to distinctive morphological traits and DNA sequences. Additionally, Aleurodiscus diffissus is combined in Megalocystidium and the identity of M. luridum is clarified. en
dc.format.extent 14
dc.language.iso eng
dc.relation.ispartof Plant ecology and evolution
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Basidiomycetes
dc.subject molecular systematics
dc.subject Russulales
dc.subject subalpine communities
dc.subject taxonomy
dc.subject IDENTIFICATION
dc.subject 1181 Ecology, evolutionary biology
dc.title Identity of the subalpine-subarctic corticioid fungus Megalocystidium leucoxanthum (Russulales, Basidiomycota) and six related species en
dc.type Article
dc.contributor.organization Finnish Museum of Natural History
dc.contributor.organization Botany
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.5091/plecevo.2021.1857
dc.relation.issn 2032-3913
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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