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        • Comisión de Investigaciones Científicas (Argentina)
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        Phylogenetic relationships of Fusarium poae based on EF-1 alpha and mtSSU sequences

        Registro en:
        http://digital.cic.gba.gob.ar/handle/11746/7139
        Recurso Completo
        http://repositorioslatinoamericanos.uchile.cl/handle/2250/2859107
        Autor
        Stenglein, Sebastián
        Rodriguero, M.S.
        Chandler, E.
        Jennings, P.
        Salerno, G.L.
        Nicholson, P.
        Institución
        • Comisión de Investigaciones Científicas (Argentina)
        Resumen
        A molecular phylogenetic analysis of<em>Fusarium poae</em>isolates from South America (Argentina) and Europe (mainly England, Germany, Italy) was performed using 98<em>F. poae</em>, four<em>Fusarium culmorum</em>, two<em>Fusarium sporotrichioides</em>and one<em>Fusarium langsethiae</em>isolates. Phylogenetic analyses were performed using nuclear (translation elongation factor 1-alpha,<em>EF-1</em>α) and mitochondrial (mitochondrial small subunit rDNA,<em>mtSSU</em>) sequences. Partitioned (each dataset separately) and combined (<em>EF-1α</em>+<em>mtSSU</em>) analyses did not reveal any clear correlations from the inferred branching topology, between the distribution of observed haplotypes and the geographic origin and/or host species. Results from the present study confirmed that isolates from<em>F. poae</em>form a monophyletic group, and the low variability within isolates from a broad geographic range suggests a common lineage history. Among<em>F. poae</em>isolates from Argentina, however, some were found to possess an insert within<em>mtSSU</em>with structural similarities to group IC2 introns.<em>F. poae</em>isolates differing by the presence/absence of a<em>mtSSU</em>insertion were characterized further by analysis of a portion of the<em>Tri5</em>gene, but this sequence was unable to reveal variability. The presence of this insert only within isolates from Argentina suggests that evolutionary events (insertions/deletions) are probably taking place within the Argentinian<em>F. poae</em>isolates, and that the acquisition of this insert occurred after geographic isolation of the Argentinian and European populations.
        Materias
        Agronomía, reproducción y protección de plantas

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        Red de Repositorios Latinoamericanos
        + de 8.000.000 publicaciones disponibles
        500 instituciones participantes
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Ingreso Administradores
        Colecciones destacadas
        • Tesis latinoamericanas
        • Tesis argentinas
        • Tesis chilenas
        • Tesis peruanas
        Nuevas incorporaciones
        • Argentina
        • Brasil
        • Colombia
        • México
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Red de Repositorios Latinoamericanos | 2006-2018