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Expression of Binary Toxin Genes in the Mosquito-Colonizable Bacteria, Bacillus cereus, Leads to High Toxicity Against Culex quinquefasciatus Larvae

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Abstract

Two B. cereus strains, Ae10 and Cx5, isolated from mosquito larval guts, were transformed with a recombinant plasmid, pBS373, harboring binary toxin genes from Bacillus sphaericus 2297. Immunoblotting analysis clearly revealed the production and presence of the 51-kDa toxin protein in both strains. Two recombinant B. cereus strains Ae10 and Cx5 showed very high toxicity against C. quinquefasciatus larvae. Since both strains have a close relationship with the mosquito larvae in the native environment and are capable of recolonizing in the guts of mosquito larvae, these strains can be considered promising new hosts for an effective delivery of mosquito-larvicidal toxins.

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Authors and Affiliations

  1. National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Paholyothin Rd., Klong 1, Klong Luang, Pathumthani 12120, Thailand

    Plearnpis Luxananil,  Sutipa Tanapongpipat &  Boonhiang Promdonkoy

  2. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan

    Haruyuki Atomi &  Tadayuki Imanaka

  3. Institute of Molecular Biology and Genetics, Salaya Campus, Mahidol University, Nakhonpathom 73170, Thailand

    Sakol Panyim

Authors
  1. Plearnpis Luxananil
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  2. Sutipa Tanapongpipat
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  3. Boonhiang Promdonkoy
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  4. Haruyuki Atomi
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  5. Tadayuki Imanaka
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  6. Sakol Panyim
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Luxananil, ., Tanapongpipat, ., Promdonkoy, . et al. Expression of Binary Toxin Genes in the Mosquito-Colonizable Bacteria, Bacillus cereus, Leads to High Toxicity Against Culex quinquefasciatus Larvae. Curr Microbiol 47, 372–375 (2003). https://doi.org/10.1007/s00284-002-4026-9

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  • DOI: https://doi.org/10.1007/s00284-002-4026-9

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