Bacillus thuringiensis Cry3Aa toxin increases the susceptibility of Crioceris quatuordecimpunctata to Beauveria bassiana infection
文献类型: 外文期刊
第一作者: Liu, Chenxi
作者: Liu, Chenxi;Lei, Zhongren;Oppert, Brenda;Lord, Jeffrey C.
作者机构:
关键词: Beauveria bassiana;Bacillus thuringiensis;Cry3Aa toxin;Spotted asparagus beetle;Crioceris quatuordecimpunctata
期刊名称:JOURNAL OF INVERTEBRATE PATHOLOGY ( 影响因子:2.841; 五年影响因子:3.368 )
ISSN: 0022-2011
年卷期: 2012 年 109 卷 2 期
页码:
收录情况: SCI
摘要: The spotted asparagus beetle, Crioceris quatuordecimpunctata (Coleoptera: Chrysomelidae), is one of the most devastating pests of asparagus in China. Sprayed synthetic pesticides have been used to control C. quatuordecimpunctata damage, but they pose problems because of residues and harm to natural enemies. Neither the microbial coleopteran-specific toxin from Bacillus thuringiensis tenebrionis, Cry3Aa, nor the fungal pathogen Beauveria bassiana have sufficient activity to effectively control C. quatuordecimpunctata damage to asparagus. However, second instar C. quatuordecimpunctata larvae exposed to a sublethal dose of Cry3Aa toxin demonstrated significantly higher larval mortality when exposed to B. bassiana. Our results suggest that a combination of Cry3Aa and B. bassiana may be effective in reducing damage by C. quatuordecimpunctata larvae to asparagus. (C) 2011 Elsevier Inc. All rights reserved.
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