Screening of Brazilian Bacillus thuringiensis isolates active against Spodoptera frugiperda, Plutella xylostella and Anticarsia gemmatalis
The toxicity of a collection of 1400 isolates of Bacillus thuringiensis was assessed against the Lepidoptera Spodoptera frugiperda, Anticarsia gemmantalis and Plutella xylostella. Twenty seven isolates showed toxicity to the larvae of these insects with three isolates demonstrating significantly gre...
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Veröffentlicht in: | Biological control 2007-06, Vol.41 (3), p.291-295 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The toxicity of a collection of 1400 isolates of
Bacillus thuringiensis was assessed against the Lepidoptera
Spodoptera frugiperda, Anticarsia gemmantalis and
Plutella xylostella. Twenty seven isolates showed toxicity to the larvae of these insects with three isolates demonstrating significantly greater potency than the standard strain against Lepidoptera,
B. thuringiensis serovar
kurstaki HD1. These isolates were all found to produce bipyramidal crystals and major spore-associated protein bands of approximately 130 and 65
kDa, consistent with the detection of at least one
cry1 and one
cry2 family gene in each. The high level of insecticidal activity of these isolates makes them excellent candidates for further development for use in the field. |
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ISSN: | 1049-9644 1090-2112 |
DOI: | 10.1016/j.biocontrol.2006.11.008 |