Abstract
A UV-resistant mutant (Bt-m) of Bacillus thuringiensis subsp. kurstaki, producing a dark brown pigment, identified as melanin, was studied. Bt-m had higher larvicidity against Heliothis armigera than its parent. Survival of Bt-m spores and their insecticidal activity to irradiation at 254 nm and 366 nm were higher than those of the parent. The only toxic polypeptide produced by Bt-m was Cry1Ac (130 kDa); it lost cry1Aa, cry2Aa, and cry2Ab.
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Received: 2 April 2001 / Accepted: 14 May 2001
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Saxena, D., Ben-Dov, E., Manasherob, R. et al. A UV Tolerant Mutant of Bacillus thuringiensis subsp. kurstaki Producing Melanin. Curr Microbiol 44, 25–30 (2002). https://doi.org/10.1007/s00284-001-0069-6
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DOI: https://doi.org/10.1007/s00284-001-0069-6