Identificación molecular de especies de nematodos noduladores (Meloidogyne spp.) asociadas a plantas ornamentales de altura
Archivos
Fecha
2011
Autores
Solano-González, Stefany
Esquivel, Alejandro
Molina, Ramón
Morera, Bernal
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Editor
Universidad de Costa Rica (Costa Rica)
Resumen
Meloidogyne es un nematodo endoparásito sedentario de amplia distribución geográfica,
responsable de causar pérdidas económicas cuantiosas en una amplia variedad de cultivos.
La globalización y la apertura de mercados para la importación y exportación de plantas
ornamentales probablemente ha contribuido a la introducción de nuevas especies,
las cuales podrían tener gran impacto económico a nivel nacional. La identificación a
nivel de especie requiere el estudio de los patrones perineales de hembras ovígeras por
personal altamente caliicado, lo que limita una rápida y certera identiicación. El objetivo
de esta investigación es el empleo de métodos moleculares altamente sensitivos, tales
como el PCR-RFLP, que permitan generar patrones de exclusión para la identificación
de las especies del género Meloidogyne en Costa Rica. Se estudiarán diez variedades de
plantas ornamentales procedentes de una inca localizada en San Isidro de Heredia y
las especies de Meloidogyne recuperadas se estudiarán mediante técnicas morfológicas
y moleculares de PCR simple y PCR-RFLP. Se amplificarán las secuencias que codiican
para la subunidad II de la citocromo oxidasa (ADN mit) y la subunidad larga del gen
ARN ribosomal (ARNr). Para realizar el RFLP, se utilizarán las enzimas de restricción Dra
I y Hinf I. Los resultados de esta investigación pretenden incrementar el conocimiento
itosanitario de diez especies de ornamentales, además de sentar bases que faciliten el
diagnóstico e identificación de estos nematodos.
Meloidogyne is a sedentary endoparasitic nematode with a wide geographical distribution. responsible for causing large economic losses in a wide variety of crops. Globalization and the opening of markets for the import and export of plants ornamentals has probably contributed to the introduction of new species, which could have great economic impact at the national level. The identification to species level requires the study of perineal patterns of ovigerous females by highly qualified personnel, which limits rapid and accurate identification. The objective of this research is the use of highly sensitive molecular methods, such as such as PCR-RFLP, which allow the generation of exclusion patterns for the identification of the species of the genus Meloidogyne in Costa Rica. Ten varieties of ornamental plants from an Inca located in San Isidro de Heredia and the recovered Meloidogyne species will be studied using morphological techniques and molecular tests of simple PCR and PCR-RFLP. The sequences that encode will be amplified for cytochrome oxidase subunit II (mit DNA) and the long subunit of the gene ribosomal RNA (rRNA). To perform the RFLP, restriction enzymes Dra will be used. I and Hinf I. The results of this research aim to increase knowledge health of ten species of ornamentals, in addition to laying foundations that facilitate the diagnosis and identification of these nematodes.
Meloidogyne is a sedentary endoparasitic nematode with a wide geographical distribution. responsible for causing large economic losses in a wide variety of crops. Globalization and the opening of markets for the import and export of plants ornamentals has probably contributed to the introduction of new species, which could have great economic impact at the national level. The identification to species level requires the study of perineal patterns of ovigerous females by highly qualified personnel, which limits rapid and accurate identification. The objective of this research is the use of highly sensitive molecular methods, such as such as PCR-RFLP, which allow the generation of exclusion patterns for the identification of the species of the genus Meloidogyne in Costa Rica. Ten varieties of ornamental plants from an Inca located in San Isidro de Heredia and the recovered Meloidogyne species will be studied using morphological techniques and molecular tests of simple PCR and PCR-RFLP. The sequences that encode will be amplified for cytochrome oxidase subunit II (mit DNA) and the long subunit of the gene ribosomal RNA (rRNA). To perform the RFLP, restriction enzymes Dra will be used. I and Hinf I. The results of this research aim to increase knowledge health of ten species of ornamentals, in addition to laying foundations that facilitate the diagnosis and identification of these nematodes.
Descripción
Palabras clave
IDENTIFICACIÓN, MOLECULAR, NEMATODOS, MELOIDOGYNE SPP., ORNAMENTAL PLANTS