Mejora de la capacidad antifúngica in vitro e in vivo de un combinado de antagonistas compatibles frente a Phytophthora capsici Leonian

Autores/as

  • Mohammed Ezziyyani Université Hassan Premier Settat, Faculté Polydisciplinaire de Khouribga (FPK), Département de Biologie, El Hay El Jadid, El Byout. BP.: 145. Office Chérifien des Phosphates (OCP). Khouribga principale, 25000. Maroc

Palabras clave:

Compatibilidad, Biocontrol, Burkholderia cepacia, Trichoderma harzianum, Pimiento

Resumen

Se estudió la capacidad antagónica de la combinación de dos microorganismos compatibles entre sí, la bacteria Burkholderia cepacia, y el hongo Trichoderma harzianum sobre el patógeno Phy­tophthora capsici, agente causal de la podredumbre de pimiento. Se realizaron confrontaciones duales in vitro de los dos antagonistas frente al patógeno y entre ellos. Los antagonistas interfieren en la supervivencia y el desarrollo del patógeno. B. cepacia produce antibiosis y T. harzianum ejerce competencia por espacio y nutrientes, micoparasitismo y lisis enzimática. El medio Avena-vermiculita produce un óptimo de biomasa. La dosis óptima de los antagonistas fueron 3.5×108 esporas/ml de T. harzianum y la 109 FCU/ml de B. cepacia, en un rango de pH 3.5-5.6 y temperaturas entre 20-30 °C. In vivo, la combinación B. cepacia+T. harzianum+suelo de plantación, redujo un 84% la incidencia de la “tristeza” 

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Citas

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Publicado

29-06-2011

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Ezziyyani, M. (2011). Mejora de la capacidad antifúngica in vitro e in vivo de un combinado de antagonistas compatibles frente a Phytophthora capsici Leonian. Anales de Biología, (33), 67-77. Recuperado a partir de https://revistas.um.es/analesbio/article/view/462351

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