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When the ribosomal DNA does not tell the truth: The case of the taxonomic position of Kurtia argillacea, an ericoid mycorrhizal fungus residing among Hymenochaetales
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SYSNO ASEP 0488828 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název When the ribosomal DNA does not tell the truth: The case of the taxonomic position of Kurtia argillacea, an ericoid mycorrhizal fungus residing among Hymenochaetales Tvůrce(i) Kolařík, Miroslav (MBU-M) RID, ORCID
Vohník, Martin (BU-J) RID, ORCIDZdroj.dok. Fungal Biology. - : Elsevier - ISSN 1878-6146
Roč. 122, č. 1 (2018), s. 1-18Poč.str. 18 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Corticioid fungi ; Ericoid mycorrhizal fungi ; Heterotachy Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Microbiology Vědní obor RIV – spolupráce Botanický ústav - Ekologie - společenstva CEP LO1509 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EE2.3.30.0003 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy ED1.1.00/02.0109 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora MBU-M - RVO:61388971 ; BU-J - RVO:67985939 UT WOS 000424173200001 EID SCOPUS 85034816657 DOI 10.1016/j.funbio.2017.09.006 Anotace The nuclear ribosomal DNA (nuc-rDNA) is widely used for the identification and phylogenetic reconstruction of Agaricomycetes. However, nuc-rDNA-based phylogenies may sometimes be in conflict with phylogenetic relationships derived from protein coding genes. In this study, the taxonomic position of the basidiomycetous mycobiont that forms the recently discovered sheathed ericoid mycorrhiza was investigated, because its nuc-rDNA is highly dissimilar to any other available fungal sequences in terms of nucleotide composition and length, and its nuc-rDNA-based phylogeny is inconclusive and significantly disagrees with protein coding sequences and morphological data. In the present work, this mycobiont was identified as Kurtia argillacea (= Hyphoderma argillaceum) residing in the order Hymenochaetales (Basidiomycota). Bioinformatic screening of the Kurtia ribosomal DNA sequence indicates that it represents a gene with a non-standard substitution rate or nucleotide composition heterogeneity rather than a deep paralogue or a pseudo gene. Such a phenomenon probably also occurs in other lineages of the Fungi and should be taken into consideration when nuc-rDNA (especially that with unusual nucleotide composition) is used as a sole marker for phylogenetic reconstructions. Kurtia argillacea so far represents the only confirmed non-sebacinoid ericoid mycorrhizal fungus in the Basidiomycota and its intriguing placement among mostly saprobic and parasitic Hymenochaetales begs further investigation of its eco-physiology. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2019
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