title: [Genetic variability of the bacterium Ralstonia solanacearum (Burkholderiales: Burholderiaceae) in the banana-growing region of Uraba (Colombia)].
abstract: The banana moko disease, caused by the bacterium Ralstonia solanacearum, is one of the most important phytopathological problems of the banana agribusiness in tropical countries. In Uraba and Magdalena (Colombia), the main exporting regions of banana in Colombia, this disease causes a destruction estimated in 16.5 ha/year. The bacterium presents an extremely high level of genetic variation that affects control measures. This is the first study of its variation in Colombia and was done with AFLP molecular markers on a population of 100 isolates from banana plants, soils and "weeds". The high level of genetic diversity, with Nei and Shannon indexes of h=0.32 and I=0.48, respectively, and the AMOVA, showed that this population is subestructured (Fst=0.66): the host is the main factor of differentiation. Even so, previous tests show that all varieties have pathogenicity on Musa.
authors.affiliation: Universidad Nacional de Colombia sede Medellín, Laboratorio de Biología Celular y Molecular, Autopista Norte, Medellín, Colombia.
authors.forename: Carolina
authors.initials: C
authors.lastname: Cardozo
authors.forename: Paola
authors.initials: P
authors.lastname: Rodríguez
authors.forename: José Miguel
authors.initials: JM
authors.lastname: Cotes
authors.forename: Mauricio
authors.initials: M
authors.lastname: Marín
mesh_terms: D054458:Amplified Fragment Length Polymorphism Analysis; D003105:Colombia; D004269:DNA, Bacterial / Q000032:analysis*; D014644:Genetic Variation / Q000235:genetics*; D028521:Musa / Q000382:microbiology*; D043368:Ralstonia solanacearum / Q000235:genetics* / Q000302:isolation & purification
chemical_list: D004269:DNA, Bacterial