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Registros recuperados: 8
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A taxonomic review of Penicillium species producing conidiophores with solitary phialides, classified in section Torulomyces Naturalis
Visagie, C.M.; Houbraken, J.; Dijksterhuis, J.; Seifert, K.A.; Jacobs, K.; Samson, R.A..
The genus Torulomyces was characterised by species that typically have conidiophores consisting of solitary phialides that produce long chains of conidia connected by disjunctors. Based on the phylogenetic position of P. lagena (generic ex-neotype), the genus and its seven species were transferred to Penicillium and classified in sect. Torulomyces along with P. cryptum and P. lassenii. The aim of this study was to review the species currently classified in sect. Torulomyces using morphology and phylogenies of the ITS, BenA, CaM and RPB2 regions. Based on our results, we accept 16 species in sect. Torulomyces, including 12 new species described as P. aeris, P. austricola, P. cantabricum, P. catalonicum, P. oregonense, P. marthae-christenseniae, P....
Tipo: Article / Letter to the editor Palavras-chave: Beta-tubulin; Calmodulin; Eupenicillium; Internal transcribed spacer rDNA region; Low temperature Scanning Electron Microscopy (cryo-SEM); Monocillium; RNA polymerase II second largest subunit; Trichocomaceae; Wollemi pine.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/607363
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Delimitation and characterisation of Talaromyces purpurogenus and related species Naturalis
Yilmaz, N.; Houbraken, J.; Hoekstra, E.S.; Frisvad, J.C.; Visagie, C.M.; Samson, R.A..
Taxa of the Talaromyces purpurogenus complex were studied using a polyphasic approach. ITS barcodes were used to show relationships between species of the T. purpurogenus complex and other Talaromyces species. RPB1, RPB2, β-tubulin and calmodulin sequences were used to delimit phylogenetic species in the complex. These data, combined with phenotypic characters, showed that the complex contains four species: T. purpurogenus, T. ruber comb. nov. and two new species T. amestolkiae sp. nov. and T. stollii sp. nov. The latter three species belong to the same clade and T. purpurogenus is located in a phylogenetic distant clade. The four species all share similar conidiophore morphologies, but can be distinguished by macromorphological characters. Talaromyces...
Tipo: Article / Letter to the editor Palavras-chave: Penicillium purpurogenum; Rubratoxin; Polyphasic taxonomy.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/531835
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Five new Penicillium species in section Sclerotiora: a tribute to the Dutch Royal family Naturalis
Visagie, C.M.; Houbraken, J.; Rodriques, C.; Silva Pereira, C.; Dijksterhuis, J.; Seifert, K.A.; Jacobs, K.; Samson, R.A..
Current literature accepts 17 species in Penicillium section Sclerotiora. Several produce colonies in bright yellow to orange colours and have monoverticillate conidiophores, apart from P. herquei, P. malachiteum and P. nodositatum, which are biverticillate. The focus of this paper is to refine the concepts of the species currently accepted in the section and introduce five new species, named after the Dutch Royal family as P. vanoranjei, P. maximae, P. amaliae, P. alexiae and P. arianeae. Penicillium vanoranjei produces orange (Dutch = oranje) colonies in culture, and is named after Willem-Alexander Claus George Ferdinand, ‘Zijne Koninklijke Hoogheid de Prins van Oranje’ (translated from Dutch as: ‘His Royal Highness the Prince of Orange’) and his family,...
Tipo: Article / Letter to the editor Palavras-chave: Arthropod vectoring; Beta-tubulin; Internal transcribed spacer region (ITS).
Ano: 2013 URL: http://www.repository.naturalis.nl/record/531975
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New penicillin-producing Penicillium species and an overview of section Chrysogena Naturalis
Houbraken, J.; Frisvad, J.C.; Seifert, K.A.; Overy, D.P.; Tuthill, D.M.; Valdez, J.G.; Samson, R.A..
Species classified in Penicillium sect. Chrysogena are primary soil-borne and the most well-known members are P. chrysogenum and P. nalgiovense. Penicillium chrysogenum has received much attention because of its role in the production on penicillin and as a contaminant of indoor environments and various food and feedstuffs. Another biotechnologically important species is P. nalgiovense, which is used as a fungal starter culture for the production of fermented meat products. Previous taxonomic studies often had conflicting species circumscriptions. Here, we present a multigene analysis, combined with phenotypic characters and extrolite data, demonstrating that sect. Chrysogena consists of 18 species. Six of these are newly described here (P. allii-sativi,...
Tipo: Article / Letter to the editor Palavras-chave: Fleming; P. chrysogenum; P. rubens; Phylogeny; Taxonomy.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/532320
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New sections in Penicillium containing novel species producing patulin, pyripyropens or other bioactive compounds Naturalis
Houbraken, J.; Wang, L.; Lee, H.B.; Frisvad.
Subgenera and sections have traditionally been used in Penicillium classifications. In the past, this sectional classification was based on macro- and microscopic characters, and occasionally supplemented with physiological and/or extrolite data. Currently, 25 sections are accepted, largely based on phylogenetic data. Certain sections of subgenus Penicillium were never studied in detail using a multigene sequence approach combined with phenotypic, ecological and extrolite data. Based on a combined partial β-tubulin (BenA), calmodulin (CaM) and RNA polymerase II second largest subunit (RPB2) multigene sequence dataset, we introduce two new sections (Osmophila and Robsamsonia) in subgenus Penicillium and synonymize section Digitata with section Penicillium....
Tipo: Article / Letter to the editor Palavras-chave: Aspergillaceae; Extrolites; Food spoilage; Phylogeny; Taxonomy.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/610495
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One fungus, which genes? Development and assessment of universal primers for potential secondary fungal DNA barcodes Naturalis
Stielow, J.B.; Lévesque, C.A.; Seifert, K.A.; Meyer, W.; Irinyi, L.; Smits, D.; Renfurm, R.; Verkley, G.J.M.; Groenewald, M.; Chaduli, D.; Lomascolo, A.; Welti, S.; Lesage-Meessen, L.; Favel, A.; Al-Hatmi, A.M.S.; Damm, U.; Yilmaz, N.; Houbraken, J.; Lombard, L.; Quaedvlieg, W.; Binder, M.; Vaas, L.A.I.; Vu, D.; Yurkov, A.; Begerow, D.; Roehl, O.; Guerreiro, M.; Fonseca, A.; Samerpitak, K.; Diepeningen, A.D. van; Dolatabadi, S.; Moreno, L.F.; Casaregola, S.; Mallet, S.; Jacques, N.; Roscini, L.; Egidi, E.; Bizet, C.; Garcia-Hermoso, D.; Martin, M.P.; Deng, S.; Groenewald, J.Z.; Boekhout, T.; Beer, Z.W. de; Barnes, I.; Duong, T.A.; Wingfield, M.J.; Hoog, G.S. de; Crous, P.W.; Lewis, C.T.; Hambleton, S.; Moussa, T.A.A.; Al-Zahrani, H.S.; Almaghrabi, O.A.; Louis-Seize, G.; Assabgui, R.; McCormick, W.; Omer, G.; Dukik, K.; Cardinali, G.; Eberhardt, U.; Vries, M. de; Robert, V..
The aim of this study was to assess potential candidate gene regions and corresponding universal primer pairs as secondary DNA barcodes for the fungal kingdom, additional to ITS rDNA as primary barcode. Amplification efficiencies of 14 (partially) universal primer pairs targeting eight genetic markers were tested across > 1 500 species (1 931 strains or specimens) and the outcomes of almost twenty thousand (19 577) polymerase chain reactions were evaluated. We tested several well-known primer pairs that amplify: i) sections of the nuclear ribosomal RNA gene large subunit (D1–D2 domains of 26/28S); ii) the complete internal transcribed spacer region (ITS1/2); iii) partial β-tubulin II (TUB2); iv) γ-actin (ACT); v) translation elongation factor 1-α (TEF1α);...
Tipo: Article / Letter to the editor Palavras-chave: DNA barcoding; ITS supplement; Molecular taxonomy; Phylogeny; Species identification; Universal primers.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/588731
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Polyphasic taxonomy of the heat resistant ascomycete genus Byssochlamys and its Paecilomyces anamorphs Naturalis
Samson, R.A.; Houbraken, J.; Varga, J.; Frisvad, J.C..
Byssochlamys and related Paecilomyces strains are often heat resistant and may produce mycotoxins in contaminated pasteurised foodstuffs. A comparative study of all Byssochlamys species was carried out using a polyphasic approach to find characters that differentiate species and to establish accurate data on potential mycotoxin production by each species. Phylogenetic analysis of the ITS region, parts of the â-tubulin and calmodulin genes, macro- and micromorphological examinations and analysis of extrolite profiles were applied. Phylogenetic analyses revealed that the genus Byssochlamys includes nine species, five of which form a teleomorph, i.e. B. fulva, B. lagunculariae, B. nivea, B. spectabilis and B. zollerniae, while four are asexual, namely P....
Tipo: Article / Letter to the editor Palavras-chave: Byssochlamys; Emodin; Eurotiales; Extrolites; Heat resistance; Mycophenolic acid; Paecilomyces; Patulin.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/532420
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Taxonomic re-evaluation of species in Talaromyces section Islandici, using a polyphasic approach Naturalis
Yilmaz, N.; Visagie, C.M.; Frisvad, J.C.; Houbraken, J.; Jacobs, K.; Samson, R.A..
The taxonomy of Talaromyces rugulosus, T. wortmannii and closely related species, classified in Talaromyces sect. Islandici, is reviewed in this paper. The species of Talaromyces sect. Islandici have restricted growth on MEA and CYA, generally have yellow mycelia and produce rugulosin and/or skyrin. They are important in biotechnology (e.g. T. rugulosus, T. wortmannii) and in medicine (e.g. T. piceus, T. radicus). The taxonomy of sect. Islandici was resolved using a combination of morphological, extrolite and phylogenetic data, using the Genealogical Concordance Phylogenetic Species Recognition (GCPSR) concept, with special focus on the T. rugulosus and T. wortmannii species complexes. In this paper, we synonymise T. variabilis, Penicillium...
Tipo: Article / Letter to the editor Palavras-chave: Multi-gene phylogeny; Penicillium rugulosum; Penicillium variabile; Talaromyces acaricola; Talaromyces crassus; Talaromyces infraolivaceus; Talaromyces subaurantiacus.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/607357
Registros recuperados: 8
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