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The age of lima bean leaves influences the richness and diversity of the endophytic fungal community, but not the antagonistic effect of endophytes against Colletotrichum lindemuthianum

López González, Rocío C | Gómez Cornelio, Sergio Alberto [autor/a] | De la Rosa García, Susana del Carmen [autor/a] | Garrido, Etzel [autor/a] | Oropeza Mariano, Octavio | Heil, Martin [autor/a] | Partida Martínez, Laila Pamela [autor/a].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Phaseolus lunatus | Frijoles | Colletotrichum lindemuthianum | Hongos endófitos | Control de enfermedades en plantasTema(s) en inglés: Phaseolus lunatus | Beans | Colletotrichum lindemuthianum | Endophytic fungi | Plant disease controlDescriptor(es) geográficos: Puerto Escondido, San Pedro Mixtepec Distr. 22 (Oaxaca, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Fungal Ecology. volumen 26 (April 2017), páginas 1-10. --ISSN: 1754-5048Número de sistema: 58033Resumen:
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Phaseolus lunatus (lima bean) has been a model organism to understand direct and indirect defenses against herbivores. We investigated the identity and diversity of endophytic fungi associated with young, mature and old leaves of lima bean in its natural environment. We recovered 758 isolates that were identified and classified in 142 fungal species from 66 genera, with Curvularia, Fusarium, Phomopsis, Alternaria and Colletotrichum being the most abundant and diverse Ascomycota genera. Our data revealed that species richness and diversity increased with leaf age, this factor being also important for the structure of the endophytic community. The occurrence patterns of fungal species was highly heterogeneous among leaves, and only fourteen species were recovered from all three foliar ages investigated. In vitro dual assays between endophytes and the plant pathogen Colletotrichum lindemuthianum revealed that most endophytes tested can inhibit the growth of this pathogen, suggesting their potential as biocontrol agents.

Recurso en línea: http://www.sciencedirect.com/science/article/pii/S1754504816301477
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Phaseolus lunatus (lima bean) has been a model organism to understand direct and indirect defenses against herbivores. We investigated the identity and diversity of endophytic fungi associated with young, mature and old leaves of lima bean in its natural environment. We recovered 758 isolates that were identified and classified in 142 fungal species from 66 genera, with Curvularia, Fusarium, Phomopsis, Alternaria and Colletotrichum being the most abundant and diverse Ascomycota genera. Our data revealed that species richness and diversity increased with leaf age, this factor being also important for the structure of the endophytic community. The occurrence patterns of fungal species was highly heterogeneous among leaves, and only fourteen species were recovered from all three foliar ages investigated. In vitro dual assays between endophytes and the plant pathogen Colletotrichum lindemuthianum revealed that most endophytes tested can inhibit the growth of this pathogen, suggesting their potential as biocontrol agents. eng

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