Phylogeny of the anamorphic genus Chrysosporium and related taxa based
on rDNA internal transcribed spacer sequences
Pilar Vidal1, María de los Angeles Vinuesa2,
José María Sánchez-Puelles2,3 and Josep
1Unitat de Microbiologia, Facultat de Medicina i Ciències
de la Salut, Universitat Rovira i Virgili, Reus, Spain;
Phylogenetic relationships of 57 species of Chrysosporium and related species
belonging to Onygenales and Sordariales were studied by analysing the nucleotide
sequences of the 5·8S rRNA gene and their flanking ITS1 and ITS2
regions. Chrysosporium is a polyphyletic taxon with affiliations to at
least two orders of the Ascomycota. The phylogenetic trees obtained in
this study divided the genus into nine highly supported monophyletic groups
(clades I-IX). However, relationships among these groups were not resolved.
These groups were consistent for both methods of comparison (neighbor-joining
and parsimony) and clearly correlated with groupings based on classical
morphological criteria, enzymatic capabilities and teleomorph morphology.
The genus Chrysosporium should be restricted to anamorphs of Onygenales,
while Geomyces should be restricted to anamorphs of Myxotrichaceae and
Myceliophthora to anamorphs of Sordariales. This study also demonstrates
that several pairs of species are very similar, which suggests that they
are synonymous, e.g. C. articulatum and A. reticulosporus; C. keratinophilum
and A. keratinophilus and C. lucknowense and C. mephiticum.
2SmithKline Beecham, Centro de Investigación Básica,
Tres Cantos, Madrid, Spain;
3Biosafety, Madrid, Spain
In: Kushwaha RKS, Guarro J (Eds.). Biology
of Dermatophytes and other Keratinophilic Fungi.
2000-2019@ Revista Iberoamericana de Micología. All rights reserved.
Revista Iberoamericana de Micología, Bilbao, 2000.