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Indian Journal of Biotechnology (IJBT) >
IJBT Vol.02 [2003] >
IJBT Vol.02(2) [April 2003] >
| Title: | Characterization of Mosquito Larvicidal Bacillus thuringiensis Isolated from Soils of India |
| Authors: | Sur, Banani
Nigam, Nitu
Joshi, A K
Bihari, Vinod |
| Keywords: | Bacillus thuringiensis
Bioinsecticide
Ecological niche
Parasporal inclusion
Serotype |
| Issue Date: | Apr-2003 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | It
has been established now that insects are acquiring resistance to commercial
products of Bacillus thuringiensis. So there is a continuous search for
bacteria producing new toxins. With this in view, an insecticidal B.
thuringiensis was isolated from soil sample obtained from the vicinity of a
penicillin factory in Vadodara,
India. The
isolate belongs to serotype H-14. Phenotypic characters of the isolate were
identical to standard B. thuringiensis var. israelensis IPS-82.
It was found to possess good larvicidal activity against Anopheles stephensi
and Culex pipiens and exhibited high resistance for penicillin
(500 ug/ml), The electrophoretic protein profiles of
purified crystals with standard B. thuringiensis (IPS-82) were studied. The
isolate apparently showed the same protein profile as that of B.
thuringiensis var. israelensis. Soil with natural selective pressure
of antibiotic penicillin thus appears to be a good ecological niche for the
isolation of B. thuringiensis. |
| Page(s): | 268-270 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0967 (Online); 0972-5849 (Print) |
| Source: | IJBT Vol.02(2) [April 2003]
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