The dual-activity insecticidal protein, Cry2Aa, does not enhance the mosquitocidal activity of Bacillus thuringiensis subsp. israelensis

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• 作者：Hyun-Woo  ; Park^a ;   ; ^b ; Jordan A.  ; Devera^a ; Bruce A.  ; Prins^a ; Dennis K.  ; Bideshi^a ;   ; ^b ;   ; ^{dbideshi@calbaptist.edu}
• 关键词：Cry2Aa ; Bacillus thuringiensis subsp. israelensis ; Mosquitocidal ; Synergism
• 刊名：Journal of Asia-Pacific Entomology
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：14
• 期：4
• 页码：429-431
• 全文大小：220 K

文摘

Cry2Aa, one of the major insecticidal proteins produced by Bacillus thuringiensis subsp. kurstaki HD1, is known to be active against both lepidopteran and dipteran larvae. In order to determine whether Cry2Aa could enhance or synergize the mosquitocidal activity of B. thuringiensis subsp. israelensis, we constructed a plasmid vector that harbored the cry2Aa operon and transformed crystalliferous and acrystalliferous strains of this bacterium. The wild-type B. thuringiensis subsp. israelensis, a recombinant B. thuringiensis subsp. israelensis producing Cry2A along with its native major mosquitocidal proteins, and a recombinant B. thuringiensis subsp. israelensis producing Cry2Aa alone were tested against three major mosquito species ?Aedes aegypti, Anopheles gambiae and Culex quinquefasciatus. Our results demonstrated that Cry2Aa does not synergize or enhance the mosquitocidal activity of B. thuringiensis subsp. israelensis against these important vectors of disease.