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Registros recuperados: 5
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Asperisporium and Pantospora (Mycosphaerellaceae): epitypifications and phylogenetic placement Naturalis
Minnis, A.M.; Kennedy, A.H.; Grenier, D.B.; Rehner, S.A.; Bischoff, J.F..
The species-rich family Mycosphaerellaceae contains considerable morphological diversity and includes numerous anamorphic genera, many of which are economically important plant pathogens. Recent revisions and phylogenetic research have resulted in taxonomic instability. Ameliorating this problem requires phylogenetic placement of type species of key genera. We present an examination of the type species of the anamorphic Asperisporium and Pantospora. Cultures isolated from recent port interceptions were studied and described, and morphological studies were made of historical and new herbarium specimens. DNA sequence data from the ITS region and n LSU were generated from these type species, analysed phylogenetically, placed into an evolutionary context...
Tipo: Article / Letter to the editor Palavras-chave: Ascomycota; Capnodiales; Dothideomycetes; Lectotype; Pawpaw; Pseudocercospora ulmifoliae.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/532054
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Cymadothea trifolii, an obligate biotrophic leaf parasite of Trifolium, belongs to Mycosphaerellaceae as shown by nuclear ribosomal DNA analyses Naturalis
Simon, U.K.; Groenewald, J.Z.; Crous, P.W..
The ascomycete Cymadothea trifolii, a member of the Dothideomycetes, is unique among obligate biotrophic fungi in its capability to only partially degrade the host cell wall and in forming an astonishingly intricate interaction apparatus (IA) in its own hyphae, while the attacked host plant cell is triggered to produce a membranous bubble opposite the IA. However, no sequence data are currently available for this species. Based on molecular phylogenetic results obtained from complete SSU and partial LSU data, we show that the genus Cymadothea belongs to the Mycosphaerellaceae (Capnodiales, Dothideomycetes). This is the first report of sequences obtained for an obligate biotrophic member of Mycosphaerellaceae.
Tipo: Article / Letter to the editor Palavras-chave: Biotrophy; Capnodiales; Cymadothea trifolii; Dothideomycetes; GenomiPhi; LSU; Mycosphaerella kilianii; Mycosphaerellaceaesooty/black; Blotch of clover; SSU.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/532112
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Exploring fungal mega-diversity: Pseudocercospora from Brazil Naturalis
Silva, M.; Barreto, R.W.; Pereira, O.L.; Freitas, N.M.; Groenewald, J.Z.; Crous, P.W..
Although the genus Pseudocercospora has a worldwide distribution, it is especially diverse in tropical and subtropical countries. Species of this genus are associated with a wide range of plant species, including several economically relevant hosts. Preliminary studies of cercosporoid fungi from Brazil allocated most taxa to Cercospora, but with the progressive refinement of the taxonomy of cercosporoid fungi, many species were relocated to or described in Pseudocercospora. Initially, species identification relied mostly on morphological features, and thus no cultures were preserved for later phylogenetic comparisons. In this study, a total of 27 Pseudocercospora spp. were collected, cultured, and subjected to a multigene analysis. Four genomic regions...
Tipo: Article / Letter to the editor Palavras-chave: Biodiversity; Capnodiales; Cercosporoid; Dothideomycetes; Multigene phylogeny; Mycosphaerellaceae; Plant pathogen; Systematics.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/611856
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High diversity and morphological convergence among melanised fungi from rock formations in the Central Mountain System of Spain Naturalis
Ruibal, C.; Platas, G.; Bills, G.F..
Melanised fungi were isolated from rock surfaces in the Central Mountain System of Spain. Two hundred sixty six isolates were recovered from four geologically and topographically distinct sites. Microsatellite-primed PCR techniques were used to group isolates into genotypes assumed to represent species. One hundred and sixty three genotypes were characterised from the four sites. Only five genotypes were common to two or more sites. Morphological and molecular data were used to characterise and identify representative strains, but morphology rarely provided a definitive identification due to the scarce differentiation of the fungal structures or the apparent novelty of the isolates. Vegetative states of fungi prevailed in culture and in many cases could...
Tipo: Article / Letter to the editor Palavras-chave: Biodiversity; Black fungi; Capnodiales; Chaetothyriales; Dothideomycetes; Extremotolerance.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/531959
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New species of Cladosporium associated with human and animal infections Naturalis
Sandoval-Denis, M.; Gené, J.; Sutton, N.P. Wiederhold, J.F. Cano-Lira, J. Guarro, D.A.; Wiederhold , N.P.; Cano-Lira, J.F.; Guarro, J..
Cladosporium is mainly known as a ubiquitous environmental saprobic fungus or plant endophyte, and to date, just a few species have been documented as etiologic agents in vertebrate hosts, including humans. In the present study, 10 new species of the genus were isolated from human and animal clinical specimens from the USA. They are proposed and characterized on the basis of their morphology and a molecular phylogenetic analysis using DNA sequences from three loci (the ITS region of the rDNA, and partial fragments of the translation elongation factor 1-alpha and actin genes). Six of those species belong to the C. cladosporioides species complex, i.e., C. alboflavescens, C. angulosum, C. anthropophilum, C. crousii, C. flavovirens and C. xantochromaticum,...
Tipo: Article / Letter to the editor Palavras-chave: Capnodiales; Cladosporiaceae; Dothideomycetes; Phylogeny; Taxonomy.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/608570
Registros recuperados: 5
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