Divergence of the IGS rDNA in Fusarium proliferatum and Fusarium globosum reveals two strain specific non-orthologous types

Jurado García-Posada, Miguel; Marín, Patricia; Vázquez, Covadonga y González Jaén, María Teresa (2012). Divergence of the IGS rDNA in Fusarium proliferatum and Fusarium globosum reveals two strain specific non-orthologous types. "Mycological Progress", v. 11 ; pp. 101-107. ISSN 1617-416X.

Descripción

Título: Divergence of the IGS rDNA in Fusarium proliferatum and Fusarium globosum reveals two strain specific non-orthologous types
Autor/es:
  • Jurado García-Posada, Miguel
  • Marín, Patricia
  • Vázquez, Covadonga
  • González Jaén, María Teresa
Tipo de Documento: Artículo
Título de Revista/Publicación: Mycological Progress
Fecha: 2012
Volumen: 11
Materias:
Escuela: E.U.I.T. Agrícolas (UPM)
Departamento: Ciencia y Tecnología Aplicadas a la Ingeniería Técnica Agrícola [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

A phylogenic analysis of Fusarium proliferatum and closely related species was performed using the most variable part within the intergenic spacer of the nuclear ribosomal DNA (IGS) and compared with a previously reported phylogeny performed in the same group of samples with a partial region of the nuclear single copy gene encoding the elongation factor 1α (EF-1α). The phylogenies from both genomic sequences were not concordant and revealed the presence of two nonorthologous IGS types, named types I and II, in F. proliferatum and Fusarium globosum. Two specific PCR assays designed to amplify either IGS type I or type II revealed that only one IGS type was present in each individual in these two species. The presence of both IGS types at the species level indicates that homogenization has not been achieved yet. This might be retarded if panmictic sexual reproduction was affected by certain levels of clonal reproduction and/or by the diverse hosts that these species are able to colonize. This study indicates that taxonomic studies carried out with the IGS rDNA, which has been widely used in Fusarium, should be undertaken with caution.

Más información

ID de Registro: 15830
Identificador DC: http://oa.upm.es/15830/
Identificador OAI: oai:oa.upm.es:15830
Depositado por: Memoria Investigacion
Depositado el: 16 Jul 2013 12:01
Ultima Modificación: 21 Abr 2016 16:08
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