Artículos de revistas
Characterization of native Bacillus thuringiensis strains and selection of an isolate active against Spodoptera frugiperda and Peridroma saucia
Fecha
2009-08Registro en:
Alvarez, Analia; Virla, Eduardo Gabriel; Pera, Licia Maria; Baigori, Mario Domingo; Characterization of native Bacillus thuringiensis strains and selection of an isolate active against Spodoptera frugiperda and Peridroma saucia; Springer; Biotechnology Letters; 31; 12; 8-2009; 1899-1903
0141-5492
CONICET Digital
CONICET
Autor
Alvarez, Analia
Virla, Eduardo Gabriel
Pera, Licia Maria
Baigori, Mario Domingo
Resumen
Twelve Bacillus thuringiensis (Bt) strains, isolated from larvae and soil samples in Argentina, were molecularly and phenotypically characterized and their insecticidal activities against Spodoptera frugiperda and Peridroma saucia were determined. One isolate—Bt RT—produced more than 93% mortality on first instar larvae of both species, which was higher than that produced by the reference strain Bt 4D1. Bt RT carried a different cry gene profile than Bt 4D1. Scanning electron microscopy showed the presence of bipyramidal and cuboidal crystals. Phenotypic characterization revealed lytic enzymes that could contribute to Bt pathogenicity.