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Título: | Genetic variation and factors affecting the genetic structure of the lichenicolous fungus Heterocephalacria bachmannii (Filobasidiales, Basidiomycota) |
Autor: | Pino Bodas, Raquel CSIC ORCID; Laakso, Into; Stenroos, Soili | Fecha de publicación: | 2017 | Editor: | Public Library of Science | Citación: | PLoS ONE 12(12): e0189603 (2017) | Resumen: | Heterocephalacria bachmannii is a lichenicolous fungus that takes as hosts numerous lichen species of the genus Cladonia. In the present study we analyze whether the geographical distance, the host species or the host secondary metabolites determine the genetic structure of this parasite. To address the question, populations mainly from the Southern Europe, Southern Finland and the Azores were sampled. The specimens were collected from 20 different host species representing ten chemotypes. Three loci, ITS rDNA, LSU rDNA and mtSSU, were sequenced. The genetic structure was assessed by AMOVA, redundance analyses and Bayesian clustering methods. The results indicated that the host species and the host secondary metabolites are the most influential factors over the genetic structure of this lichenicolous fungus. In addition, the genetic structure of H. bachmannii was compared with that of one of its hosts, Cladonia rangiformis. The population structure of parasite and host were discordant. The contents in phenolic compounds and fatty acids of C. rangiformis were quantified in order to test whether it had some influence on the genetic structure of the species. But no correlation was found with the genetic clusters of H. bachmannii. | Versión del editor: | http://dx.doi.org/10.1371/journal.pone.0189603 | URI: | http://hdl.handle.net/10261/240528 | DOI: | 10.1371/journal.pone.0189603 | Identificadores: | doi: 10.1371/journal.pone.0189603 issn: 1932-6203 |
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