@ARTICLE{TreeBASE2Ref16494, author = {Matthias Lutz and Robert Bauer and Dominik Begerow and Franz Oberwinkler}, title = {Tuberculina-Thanatophytum/rhizoctonia crocorum-Helicobasidium: a unique mycoparasitic-phytoparasitic life strategy}, year = {2004}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Mycological Research}, volume = {108}, number = {3}, pages = {227--238}, abstract = {Tuberculina species are mitosporic parasites of rust fungi. Recently, we demonstrated that Tuberculina represents the asexual life stage of the plant-parasitic genus Helicobasidium. Here we reveal host specificity of Tuberculina and Helicobasidium species on rust fungal hosts by means of infection experiments and molecular analyses. We inoculated species of the rust genera Chrysomyxa, Coleosporium, Cronartium, Gymnosporangium, Puccinia, Tranzschelia, and Uromyces with conidia and with basidiospores of Helicobasidium longisporum and H. purpureum, and with conidia of Tuberculina maxima, T. persicina, and T. sbrozzii. In addition, we analyzed base sequences from the ITS region of the nuclear large subunit ribosomal DNA of 51 Tuberculina and Helicobasidium specimens collected in the field together with the sequences from the Tuberculina infections obtained in the infection experiments. The data show that there are at least six monophyletic lineages within the Tuberculina/Helicobasidium-group that are unambiguously distinguished by molecular and morphological characters and a specific host spectrum of the Tuberculina-stage. The thereby revealed diversity opens up new vistas on the evolution of that exceptional mycoparasitic-phytoparasitic fungal group.} }

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