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The use of compensatory base change analysis of ITS2 as a tool in the phylogeny of Mucorales, illustrated by the Mucor circinelloides complex |
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| Authors: | Julia Paw?owska Grit Walther Mateusz Wilk Sybren de Hoog Marta Wrzosek |
| Institution: | 1. Department of Systematics and Plant Geography, University of Warsaw, Warsaw, Poland 2. Institute of Microbiology, Department of Microbiology and Molecular Biology, University of Jena, Jena, Germany 3. Leibniz-Institute for Natural Product Research and Infection Biology, Hans-Kn?ll-Institute, Jena Microbial Resource Collection, Jena, Germany 4. CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands 5. Inter-Faculty Interdisciplinary Doctoral Studies in Natural Sciences and Mathematics, University of Warsaw, Warsaw, Poland |
| Abstract: | Compensatory base changes (CBCs) in helix II of rDNA ITS2, suggested as a molecular classifier for fungi, were analyzed in Mucor circinelloides and its varieties. Only a few CBCs were found in the complex. Three out of the four accepted formae (f. circinelloides, f. lusitanicus, f. janssenii) did not exhibit CBCs. One CBC was found between strains that form zygospores; consequently, CBC is not always concordant with mating experiments. Strains with two CBC are unable to breed. It is suggested that some strains of the M. circinelloides complex are at the beginning of speciation. |
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