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Polyphasic characterization of “Aspergillus nidulans var. roseus” ATCC 58397

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Polyphasic characterization of the echinocandin B producer Aspergillus nidulans var. roseus ATCC 58397 strain was carried out to elucidate its taxonomical status. According to its carbon source utilization and secondary metabolite spectrum as well as the partial β-tubulin, calmodulin, and γ-actin gene sequences, A. nidulans var. roseus belongs to the Emericella rugulosa species. Auxotroph mutants of A. nidulans var. roseus ATCC 58397 and E. rugulosa CBS 171.71 and CBS 133.60 formed stable heterokaryons on minimal medium with several A. nidulans strains, and in the case of A. nidulans var. roseus, even cleistothecia were developed.

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M.M. is indebted for support from the Office for Subsidized Research Units of the Hungarian Academy of Sciences. This work was financially supported by the grant TAMOP-4.2.1/B-09/1/KONV-2010-0007. Authors are indebted to János Varga (University of Szeged, Szeged, Hungary) for his valuable help in the interpretation of DNA sequence data.

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Correspondence to Tamás Emri.

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Tóth, V., Nagy, C.T., Miskei, M. et al. Polyphasic characterization of “Aspergillus nidulans var. roseus” ATCC 58397. Folia Microbiol 56, 381–388 (2011).

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