NAGIOS: RODERIC FUNCIONANDO

On the complexity of the Saccharomyces bayanus taxon: hybridization and potential hybrid speciation

Repositori DSpace/Manakin

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

On the complexity of the Saccharomyces bayanus taxon: hybridization and potential hybrid speciation

dc.contributor.author	Pérez Través, Laura
dc.contributor.author	Lopes, Christian A.
dc.contributor.author	Querol Simón, Amparo
dc.contributor.author	Barrio Esparducer, Eladio
dc.date.accessioned	2014-11-03T09:26:50Z
dc.date.available	2014-11-03T09:26:50Z
dc.date.issued	2014
dc.identifier.citation	Pérez Través, Laura Lopes, Christian A. Querol Simón, Amparo Barrio Esparducer, Eladio 2014 On the complexity of the Saccharomyces bayanus taxon: hybridization and potential hybrid speciation Plos One 9 4 e93729
dc.identifier.uri	http://hdl.handle.net/10550/39525
dc.description.abstract	Although the genus Saccharomyces has been thoroughly studied, some species in the genus has not yet been accurately resolved; an example is S. bayanus, a taxon that includes genetically diverse lineages of pure and hybrid strains. This diversity makes the assignation and classification of strains belonging to this species unclear and controversial. They have been subdivided by some authors into two varieties (bayanus and uvarum), which have been raised to the species level by others. In this work, we evaluate the complexity of 46 different strains included in the S. bayanus taxon by means of PCR-RFLP analysis and by sequencing of 34 gene regions and one mitochondrial gene. Using the sequence data, and based on the S. bayanus var. bayanus reference strain NBRC 1948, a hypothetical pure S. bayanus was reconstructed for these genes that showed alleles with similarity values lower than 97% with the S. bayanus var. uvarum strain CBS 7001, and of 99¿100% with the non S. cerevisiae portion in S. pastorianus Weihenstephan 34/70 and with the new species S. eubayanus. Among the S. bayanus strains under study, different levels of homozygosity, hybridization and introgression were found; however, no pure S. bayanus var. bayanus strain was identified. These S. bayanus hybrids can be classified into two types: homozygous (type I) and heterozygous hybrids (type II), indicating that they have been originated by different hybridization processes. Therefore, a putative evolutionary scenario involving two different hybridization events between a S. bayanus var. uvarum and unknown European S. eubayanus-like strains can be postulated to explain the genomic diversity observed in our S. bayanus var. bayanus strains.
dc.language.iso	eng
dc.relation.ispartof	Plos One, 2014, vol. 9, num. 4, p. e93729
dc.subject	Genètica molecular
dc.subject	Saccharomyces
dc.title	On the complexity of the Saccharomyces bayanus taxon: hybridization and potential hybrid speciation
dc.type	journal article	es_ES
dc.date.updated	2014-11-03T09:26:50Z
dc.identifier.doi	10.1371/journal.pone.0093729
dc.identifier.idgrec	096142
dc.rights.accessRights	open access	es_ES