Lack of cross-resistance to Cry19A from Bacillus thuringiensis subsp jegathesan in Culex quinquefasciatus (Diptera: Culicidae) resistant to cry toxins from Bacillus thuringiensis subsp israelensis

被引：11

作者：

Wirth, MC ^{[1
]}

Delécluse, A

Walton, WE

机构：

[1] Univ Calif Riverside, Dept Entomol, Riverside, CA 92521 USA

[2] Inst Pasteur, Paris, France

来源：

APPLIED AND ENVIRONMENTAL MICROBIOLOGY | 2001年 / 67卷 / 04期

关键词：

D O I：

10.1128/AEM.67.4.1956-1958.2001

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Culex quinquefasciatus mosquitoes with high levels of resistance to single or multiple toxins from Bacillus thuringiensis subsp. israelensis were tested for cross-resistance to the Bacillus thuringiensis subsp. jegathesan polypeptide Cry19A. No cross-resistance was detected in mosquitoes that had been selected with the Cry11A, Cry4A and Cry4B, or Cry4A, Cry4B, Cry11A, and CytA toxins. A low but statistically significant level of cross-resistance, three to fourfold, was detected in the colony selected with Cry4A, Cry4B, and Cry11A. This cross-resistance was similar to that previously detected with B. thuringiensis subsp. jegathesan in the same colony. These data help explain the toxicity of B. thuringiensis subsp. jegathesan against the resistant colonies and indicate that the Cry19A polypeptide might be useful in managing resistance and/or as a component of synthetic combinations of mosquitocidal toxins.

引用

页码：1956 / 1958

页数：3

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