Your browser doesn't support javascript.
loading
Aislamiento y caracterización de dos cepas de Fusarium oxysporum causantes de la pudrición seca en Solanum tuberosum en Colombia / Isolation and characterization of two strains of Fusarium oxysporum causing potato dry rot in Solanum tuberosum in Colombia
García Bayona, Leonor; Grajales, Alejandro; Cárdenas, Martha Emiliana; Sierra, Roberto; Lozano, Gabriel; Garavito, Manuel Fernando; Cepero de García, María Caridad; Bernal, Adriana; Jiménez, Pedro; Restrepo, Silvia.
Afiliação
  • García Bayona, Leonor; Universidad de los Andes. Bogotá. Colombia
  • Grajales, Alejandro; Universidad de los Andes. Bogotá. Colombia
  • Cárdenas, Martha Emiliana; Universidad de los Andes. Bogotá. Colombia
  • Sierra, Roberto; Universidad de los Andes. Bogotá. Colombia
  • Lozano, Gabriel; Universidad de los Andes. Bogotá. Colombia
  • Garavito, Manuel Fernando; Universidad de los Andes. Bogotá. Colombia
  • Cepero de García, María Caridad; Universidad de los Andes. Bogotá. Colombia
  • Bernal, Adriana; Universidad de los Andes. Bogotá. Colombia
  • Jiménez, Pedro; Universidad Militar Nueva Granada. Bogotá. Colombia
  • Restrepo, Silvia; Universidad de los Andes. Bogotá. Colombia
Rev. iberoam. micol ; 28(4): 166-172, oct.-dic. 2011.
Artigo em Espanhol | IBECS | ID: ibc-91058
Biblioteca responsável: ES1.1
Localização: BNCS
RESUMEN
resumen(AU)
ABSTRACT
Background. Fusarium oxysporum has worldwide distribution and causes severe vascular wilt or root rot in many plants. Strains are classified into formae speciales based on their high degree of host specificity, of which multilocus sequence typing provides a fairly good estimate. Aims. The main aim of this study was to identify the causal agent of an infected potato tuber in Colombia. Methods. Two F. oxysporum isolates were recovered from a potato tuber showing symptoms of dry rot. Both macroscopic and microscopic morphology differences were observed between the two isolates. Koch's postulates were verified and in quantitative tuber pathogenecity trials, both isolates induced moderate dry rot. Ribosomal internal transcribed spacer (ITS) and partial intergenic spacer region (IGS) sequences were PCR-amplified, sequenced and shown to be identical for the two isolates. A maximum parsimony phylogeny was created using F. oxysporum IGS sequences available in the Genebank database, which does not include sequences from the formae speciales tuberosi. Results. Our two isolates were most closely related to a red clover (Trifolium pratense) pathogenic isolate and two non-pathogenic F. oxysporum isolates from birdsfoot trefoil (Lotus corniculatus) and Lycopersicon sp. rhyzosphere (99% identity). Conclusions. These experiments showed that our isolates are not restricted to potato and that a molecular marker is needed to differentiate the formae speciales since the IGS and EF-1alpha do not have the power to do it(AU)
Assuntos
Buscar no Google
Coleções: Bases de dados nacionais / Espanha Base de dados: IBECS Assunto principal: Filogenia / Solanum tuberosum / DNA Espaçador Ribossômico / Fusarium Tipo de estudo: Estudo prognóstico País/Região como assunto: América do Sul / Colômbia Idioma: Espanhol Revista: Rev. iberoam. micol Ano de publicação: 2011 Tipo de documento: Artigo Instituição/País de afiliação: Universidad Militar Nueva Granada/Colombia / Universidad de los Andes/Colombia
Buscar no Google
Coleções: Bases de dados nacionais / Espanha Base de dados: IBECS Assunto principal: Filogenia / Solanum tuberosum / DNA Espaçador Ribossômico / Fusarium Tipo de estudo: Estudo prognóstico País/Região como assunto: América do Sul / Colômbia Idioma: Espanhol Revista: Rev. iberoam. micol Ano de publicação: 2011 Tipo de documento: Artigo Instituição/País de afiliação: Universidad Militar Nueva Granada/Colombia / Universidad de los Andes/Colombia
...