Identificación de especies de Meloidogyne asociadas a plantas ornamentales de altura en Costa Rica
Fecha
2015
Autores
Solano-González, Stefany
Esquivel-Hernandez, Alejandro
Molina-Bravo, Ramón
Morera, Bernal
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Editor
Universidad de Costa Rica
Resumen
Identificación de especies de Meloidogyne asociadas a plantas ornamentales de altura en Costa Rica. El objetivo del presente trabajo fue identificar especies de nematodos del género Meloidogyne asociadas a plantas ornamentales de altura. El estudio se realizó en el cantón de San Isidro de Heredia, Costa Rica, en un vivero comercial durante el periodo 2011-2012, en diez especies de plantas. Para la identificación se utilizaron mediciones morfométricas de la longitud del estilete, tamaño de cola y región hialina de los juveniles en segundo estado de desarrollo (J2); también se obtuvieron diseños perineales de hembras ovígeras. Se extrajo ADN genómico de un solo individuo J2 y se realizaron análisis mediante la amplificación del espacio intergénico entre la subunidad II del citocromo oxidasa (COII) y la subunidad larga del gen ARN ribosomal mediante la técnica PCR- RFLP. La integración de estos métodos permitió identificar cinco especies de nematodos del género Meloidogyne (M. arenaria, M. hapla, M. hispanica, M. incognita, M. javanica), y se reportaron nuevos patrones de restricción con la enzima AluI para M. hapla y M. javanica. Además se obtuvo el reporte preliminar de M. hispanica, descrito mediante la secuenciación de las regiones del 18S y 28S.
Identification of Meloidogyne species associated with upland ornamentals plants in Costa Rica. The objective of this study was to identify nematodes species of the genus Meloidogyne associated with upland ornamental plants. We sampled ten ornamental species in a commercial nursery in San Isidro, Heredia, Costa Rica between 2011- 2012. Morphometric measurements of the stylet length, the tail length, and the hyaline region of J2s, as well as perineal patterns of egg-carrying females were used for identification, Genomic DNA was extracted from single J2s and molecular analyses were performed by amplifying the intergenic region between cytochrome oxidase subunit II of the COII and the long subunit of the ARN ribosomal genes by PCR-RFLP. Combining these methods allowed identification of five species of nematodes of the genus Meloidogyne (M. arenaria, M. hapla, M. hispanica, M. incognita and M. javanica), and new restriction enzyme patterns were reported for M. hapla and M. javanica using AluI. Additionally, a preliminary report of M. hispanica was described by sequencing the 28S and 18S regions
Identification of Meloidogyne species associated with upland ornamentals plants in Costa Rica. The objective of this study was to identify nematodes species of the genus Meloidogyne associated with upland ornamental plants. We sampled ten ornamental species in a commercial nursery in San Isidro, Heredia, Costa Rica between 2011- 2012. Morphometric measurements of the stylet length, the tail length, and the hyaline region of J2s, as well as perineal patterns of egg-carrying females were used for identification, Genomic DNA was extracted from single J2s and molecular analyses were performed by amplifying the intergenic region between cytochrome oxidase subunit II of the COII and the long subunit of the ARN ribosomal genes by PCR-RFLP. Combining these methods allowed identification of five species of nematodes of the genus Meloidogyne (M. arenaria, M. hapla, M. hispanica, M. incognita and M. javanica), and new restriction enzyme patterns were reported for M. hapla and M. javanica using AluI. Additionally, a preliminary report of M. hispanica was described by sequencing the 28S and 18S regions
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Palabras clave
NEMATOLOGIA, IDENTIFICACION MOLECULAR, ORNAMENTALES, PCR-RFLP, MELOIDOGYNE, NEMÁTODOS PARÁSITOS DE PLANTAS, PHYTOPARASITIC NEMATODES, MOLECULAR IDENTIFICATION