Journal
MYCOLOGICAL RESEARCH
Volume 109, Issue -, Pages 342-356Publisher
ELSEVIER SCI LTD
DOI: 10.1017/S0953756204002229
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Combined analyses of ITS and LSU rDNA sequences were utilized to resolve the phylogenetic relationships of 98 members of the smut genera Lundquistia, Melanopsichium, Moesziomyces, Macalpinomyces, Sporisorium, and Ustilago (Basidiomycofa: Uslilaginales). Minimum Evolution and Bayesian inference of phylogeny resolve three major groups of almost identical composition: Sporisorium, Ustilago, and a basal assemblage of both Ustilago and Sporisorium species. Macalpinomyces deserves generic rank regarding its type species M. eriachnes; all other Macalpinomyces species of our study clearly turn out to be part of Ustilago or Sporisorium. Lundquistia evidently belongs to Sporisorium. Moesziomyces, probably paraphyletic, stands basal to all other genera. Interestingly, Melanopsichium belongs to the Ustilgo clade, being the only member of the ingroup not parasitizing on Poaceae. The patchy distribution of commonly used morphological characters along our phylograms points to their variability ad dependence on the host's morphological traits instead of being valuable for resolving parasite phylogeny. The new combination: Sporisorium facicitlaris comb. nov. (syn. Lundqistia fascicularis) is made.
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