Diagnóstico morfológico, molecular y de patogenicidad de hongos de raíz y cuello en céspedes de México


Por: García-Munguía C.A., Acosta-Ramos M., Vázquez-Martinez O., Pérez-Sato M., García-Munguía A., García-Munguía O., García-Munguía A.M.

Publicada: 1 ene 2017
Resumen:
The illnesses that cause root and neck rot in golf courses constitute a limiting factor for grass development worldwide. This is mainly true when management guidelines are not conducted. Our research was conducted in the Golf Club “Mexico”, located in Mexico, D.F. Isolates were taken from plants that presented yellowing symptoms and root and neck rot. The identified pathogenic fungi, isolated from axenic media, were Giberella avenacea, Fusarium oxysporum, F. oxysporum f. sp. cubense and Pythium ultimum. The molecular characterization showed a comparison of the DNA-obtained sequences which was morphologically determined as F. avenaceum and was molecularly corroborated as G. avenacea with a similarity of 96%. Comparison between the obtained DNA sequences which were morphologically determined as F. oxysporum, were molecularly corroborated as F. oxysporum with a similarity of 97%. Finally, the DNA fungi sequence comparisons that were morphologically determined as F. oxysporum, were molecularly corroborated as F. oxysporum f. sp. cubense with a similarity of 97%. It was proved that the study fungi were the causal agents of the symptoms at the field because their inoculation in grass growing in plots (at the greenhouse) determined the same symptoms. The re-isolates were identified as the inoculated species, and in this way the Koch’s postulates were fulfilled. © 2017, Fundacion Romulo Raggio. All rights reserved.

Filiaciones:
García-Munguía C.A.:
 Departamento de Veterinaria y Zootecnia, División de Ciencias de la Vida, Universidad de Guanajuato, Campus Irapuato-Salamanca. Ex-Hacienda El Copal km. 9, carretera Irapuato-Silao, Irapuato, Guanajuato C.P: 36821, Mexico

Acosta-Ramos M.:
 Departamento de Parasitología Agrícola, Universidad Autónoma Chapingo, Carretera México-Texcoco km 38, 5, Chapingo, Estado de México C.P. 56230, Mexico

Vázquez-Martinez O.:
 Centro de Ciencias Agropecuarias, Universidad Autónoma de Aguascalientes, Av. Universidad No. 940, Col. Ciudad Universitaria, Aguascalientes, C.P. 20131, Mexico

Pérez-Sato M.:
 Facultad de Ingeniería Agrohidráulica, Benemérita Universidad Autónoma de Puebla, San Juan Acateno, Teziutlán, Puebla C.P. 73940, Mexico

García-Munguía A.:
 Centro de Investigaciones Económicas, Sociales, Tecnológicas de la Agroindustria y la Agricultura Mundial, Universidad Autónoma Chapingo, Carretera México-Texcoco km 38.5., Chapingo, Estado de México C.P. 56230, Mexico

García-Munguía O.:
 DGIP, Universidad Autónoma Chapingo, Carretera México-Texcoco km 38, 5Estado de México C.P. 56230, Mexico

García-Munguía A.M.:
 Centro de Ciencias Agropecuarias, Universidad Autónoma de Aguascalientes, Av. Universidad No. 940, Col. Ciudad Universitaria, Aguascalientes, C.P. 20131, Mexico
ISSN: 00319457
Editorial
FUNDACION ROMULO RAGGIO, GASPAR CAMPOS 861, 1638 VICENTE LOPEZ (BA), ARGENTINA, Argentina
Tipo de documento: Article
Volumen: 86 Número:
Páginas: 258-264

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