Artículo
Screening of Argentine native fungal strains for biocontrol of the grasshopper Tropidacris collaris: Relationship between fungal pathogenicity and chitinolytic enzyme activity
Pelizza, Sebastian Alberto
; Eliades, Lorena Alejandra
; Saparrat, Mario Carlos Nazareno
; Cabello, Marta Noemí; Scorsetti, Ana Clara
; Lange, Carlos Ernesto
Fecha de publicación:
04/2012
Editorial:
Springer
Revista:
World Journal of Microbiology
ISSN:
0959-3993
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Tropidacris collaris (Orthoptera: Romaleidae) is a large and voracious grasshopper, which, in recent years, has become a recurrent pest in increasingly extensive areas of Argentina's northern provinces. In the present work chitinase activity was measured in 59 entomopathogenic fungal isolates native to Argentina, and the relationship between enzymatic activity and fungal virulence was assessed. Isolate LPSC 1067 caused the highest mortality on T. collaris nymphs (97.7 ± 1.22%). Nine isolates caused no mortality, while the remaining 49 caused mortalities ranging from 6.6 ± 0.3% (LPSC 770) to 91.06 ± 1.51% (LPSC 906). Several isolates revealed chitinolytic capabilities on test plates, although the activities differed with respect to the ratio of the chitin-decay-halo and fungal-colony diameters. A principal component analysis indicated that isolate LPSC 1067, obtained from a long-horned grasshopper (Orthoptera: Tettigoniidae), would be a potential candidate for T. collaris biocontrol because the strain exhibited the highest mortality, a shorter median lethal time, and a high enzymatic activity and growth rate.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(CEPAVE)
Articulos de CENTRO DE EST.PARASITOL.Y DE VECTORES (I)
Articulos de CENTRO DE EST.PARASITOL.Y DE VECTORES (I)
Citación
Pelizza, Sebastian Alberto; Eliades, Lorena Alejandra; Saparrat, Mario Carlos Nazareno; Cabello, Marta Noemí; Scorsetti, Ana Clara; et al.; Screening of Argentine native fungal strains for biocontrol of the grasshopper Tropidacris collaris: Relationship between fungal pathogenicity and chitinolytic enzyme activity; Springer; World Journal of Microbiology; 28; 4; 4-2012; 1359-1366
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