Informace o publikaci

Molecular systematics of Barbatosphaeria (Sordariomycetes): multigene phylogeny and secondary ITS structure

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RÉBLOVÁ Martina RÉBLOVÁ Kamila ŠTĚPÁNEK Václav

Rok publikování 2015
Druh Článek v odborném periodiku
Časopis / Zdroj Persoonia
Fakulta / Pracoviště MU

Středoevropský technologický institut

Citace
www http://www.ingentaconnect.com/content/nhn/pimj/2015/00000035/00000001/art00002?token=0056181a8ae8b6087e41225f4038382c7441217670673e2c2a576b34272c5f7b3d6d3f4e4b343fb6c493d2
Doi http://dx.doi.org/10.3767/003158515X687434
Obor Botanika
Klíčová slova phylogenetics; Ramichloridium; sequence analysis; spacer regions; Sporothrix; Tectonidula
Přiložené soubory
Popis Thirteen morphologically similar strains of barbatosphaeria- and tectonidula-like fungi were studied based on the comparison of cultural and morphological features of sexual and asexual morphs and phylogenetic analyses of five nuclear loci, i.e. internal transcribed spacer rDNA operon (ITS), large and small subunit nuclear ribosomal DNA, beta-tubulin, and second largest subunit of RNA polymerase II. Phylogenetic results were supported by in-depth comparative analyses of common core secondary structure of ITS1 and ITS2 in all strains and the identification of non-conserved, co-evolving nucleotides that maintain base pairing in the RNA transcript. Barbatosphaeria is defined as a well-supported monophyletic clade comprising several lineages and is placed in the Sordariomycetes incertae sedis. The genus is expanded to encompass nine species with both septate and non-septate ascospores in clavate, stipitate asci with a non-amyloid apical annulus and non-stromatic ascomata with a long decumbent neck and carbonised wall often covered by pubescence. The asexual morphs are dematiaceous hyphomycetes with holoblastic conidiogenesis belonging to Ramichloridium and Sporothrix types. The morphologically similar Tectonidula , represented by the type species T. hippocrepida , grouped with members of Barbatosphaeria and is transferred to that genus. Four new species are introduced and three new combinations in Barbatosphaeria are proposed. A dichotomous key to species accepted in the genus is provided.
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