title: Isolation and characterization of soil Streptomyces species as potential biological control agents against fungal plant pathogens.
abstract: The use of antagonist microorganisms against fungal plant pathogens is an attractive and ecologically alternative to the use of chemical pesticides. Streptomyces are beneficial soil bacteria and potential candidates for biocontrol agents. This study reports the isolation, characterization and antagonist activity of soil streptomycetes from the Los Petenes Biosphere Reserve, a Natural protected area in Campeche, Mexico. The results showed morphological, physiological and biochemical characterization of six actinomycetes and their inhibitory activity against Curvularia sp., Aspergillus niger, Helminthosporium sp. and Fusarium sp. One isolate, identified as Streptomyces sp. CACIS-1.16CA showed the potential to inhibit additional pathogens as Alternaria sp., Phytophthora capsici, Colletotrichum sp. and Rhizoctonia sp. with percentages ranging from 47 to 90 %. This study identified a streptomycete strain with a broad antagonist activity that could be used for biocontrol of plant pathogenic fungi.
authors: Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C. Unidad Sureste, Calle 30 No. 151 (7 y 7A). Col. García Ginerés, C.P. 97070, Mérida, Yucatán, México, zevangelista@ciatej.mx.
authors: Zahaed
authors: Z
authors: Evangelista-Martínez
mesh_terms: D039903:Actinobacteria / Q000302:isolation & purification*; D001483:Base Sequence; D061046:Biological Control Agents; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D003904:Mitosporic Fungi / Q000502:physiology*; D008969:Molecular Sequence Data; D010802:Phylogeny; D010838:Phytophthora / Q000502:physiology*; D010935:Plant Diseases / Q000382:microbiology; D012988:Soil Microbiology; D013302:Streptomyces / Q000145:classification / Q000302:isolation & purification* / Q000502:physiology
chemical_list: D061046:Biological Control Agents; D004269:DNA, Bacterial; D004275:DNA, Ribosomal