GENETIC CHARACTERISATION OF <em>Metarhizium anisopliae</em> (Metchniko) SOROKIN ISOLATES FROM SUGARCANE FIELDS AND THEIR PATHOGENICITY AGAINST <em>Aeneolamia postica</em> (Walker) (Hemiptera: Cercopidae)

Autores/as

  • A Bautista-Galvez Universidad Tecnológica del Usumacinta, Libramiento Glorieta, Carretera E. Zapata-Tenosique Km. 1. Colonia Las Lomas C.P. 86901 Emiliano Zapata, Tabasco
  • JF Barrera El Colegio de la Frontera Sur, Carretera Antiguo Aeropuerto km 2.5, Tapachula, 30700, Chiapas, México (EPC) Instituto Tecnológico de la Zona Olmeca, Tabasco
  • E Payró de la Cruz Instituto Tecnológico de la Zona Olmeca, Tabasco
  • S Salgado-García Colegio de Postgraduados, Campus Tabasco, Tabasco
  • J Gómez-Ruiz El Colegio de la Frontera Sur, Carretera Antiguo Aeropuerto km 2.5, Tapachula, 30700, Chiapas
  • JF Gomez-Leyva Instituto Tecnológico de Tlajomulco, Jal. Km 10 Carretera a San Miguel Cuyutlán. Tlajomulco de Zúñiga, Jalisco

DOI:

https://doi.org/10.19136/era.a28n3.11

Palabras clave:

Sugarcane, entomopathogenic fungi, biological control, molecular characterisation, pathogenicity

Resumen

A commercial strain of Metarhizium anisopliae (Metchniko) Sorokin was used by farmers in 2005 to control the sugarcane froghopper Aeneolamia postica (Walker) in Los Ríos, Tabasco, Mexico. The persistence and the eect of this introduced isolate on the genetic diversity and pathogenicity of the native fungus population are unknown. The purpose of this study was to characterise the genetic diversity and pathogenicity of M. anisopliae isolates collected from sugarcane elds in the region. The Galleria baiting method was used to sample the fungus from the soil, whereas the insect netting method was used to capture adults infected by A. postica. Samples were collected from a total of 33 sugarcane elds. Ten isolates of M. anisopliae were obtained, three in 2007 and seven in 2008; seven isolates were collected near the Usumacinta river. Random amplied polymorphic DNA markers and amplied ribosomal DNA restriction analysis of the 10 isolates revealed the presence of seven subgroups. Two of the isolates obtained in 2008 were genetically similar to the commercial strain used in 2005. At least two genotypes of M. anisopliae were found in this region. No clear relationship between genotype similarity and isolate pathogenicity against A. postica was recorded. Some of the native M. anisopliae isolates are promising candidates as agents of biological control against A. postica.

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Publicado

2014-04-11

Cómo citar

Bautista-Galvez, A., Barrera, J., Payró de la Cruz, E., Salgado-García, S., Gómez-Ruiz, J., & Gomez-Leyva, J. (2014). GENETIC CHARACTERISATION OF <em>Metarhizium anisopliae</em> (Metchniko) SOROKIN ISOLATES FROM SUGARCANE FIELDS AND THEIR PATHOGENICITY AGAINST <em>Aeneolamia postica</em> (Walker) (Hemiptera: Cercopidae). Ecosistemas Y Recursos Agropecuarios, 28(3). https://doi.org/10.19136/era.a28n3.11

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Sección

ARTÍCULOS CIENTIFICOS