Ecological aspects of Bacillus thuringiensis in an Oxisol
DOI:
https://doi.org/10.1590/S0103-90162003000100004Keywords:
population dynamics, insecticidal crystal protein, conjugationAbstract
Bacillus thuringiensis is a Gram positive, sporangial bacterium, known for its insecticidal habilities. Survival and conjugation ability of B. thuringiensis strains were investigated; vegetative cells were evaluated in non-sterile soil. Vegetative cells decreased rapidly in number, and after 48 hours the population was predominantly spores. No plasmid transfer was observed in non-sterile soil, probably because the cells died and the remaining cells sporulated quickly. Soil is not a favorable environment for B. thuringiensis multiplication and conjugation. The fate of purified B. thuringiensis toxin was analyzed by extractable toxin quantification using ELISA. The extractable toxin probably declined due to binding on surface-active particles in the soil.Downloads
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Published
2003-02-01
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Section
Entomology
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All content of the journal, except where identified, is licensed under a Creative Common attribution-type BY-NC.How to Cite
Ecological aspects of Bacillus thuringiensis in an Oxisol . (2003). Scientia Agricola, 60(1), 19-22. https://doi.org/10.1590/S0103-90162003000100004