The novel mosquitocidal Bacillus thuringiensis strain LLP29 provides potential for use in practice

ZHANG Linngling; WU Songqing; PENG Yan; Li Mingwei; SUN Linying; GUAN Xiong

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The novel mosquitocidal Bacillus thuringiensis strain LLP29 provides potential for use in practice

ZHANG Linngling 1,WU Songqing 2,PENG Yan 2,Li Mingwei 2,SUN Linying 2,GUAN Xiong 2 *

1.Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University

2.Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, 350002

*Correspondence author

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Funding: This study was supported by the National Natural Science Foundation of China （No.Grant No. 31071745）, the Science Foundation of the Ministry of Education of China （No.Grants Nos. 20093515110010 and 20093515120010）

Opened online: 1 September 2011

Accepted by: none

Citation: ZHANG Linngling,WU Songqing,PENG Yan.The novel mosquitocidal Bacillus thuringiensis strain LLP29 provides potential for use in practice[OL]. [ 1 September 2011] http://en.paper.edu.cn/en_releasepaper/content/4440005

LLP29 was a Bacillus thuringiensis strain isolated from leaves of Magnolia denudata. According to the results of preliminary analysis, it was highly toxic to mosquitoes and took less time in incubation. In order to characterize this promising strain, the growth rate, lagellar antigen serology, biochemical profile, antibiotic sensitivity and mosquitocidal activities against Aedes aegypti, Ae. albopictus, and Culex quinquefasciatus were tested. It was shown that LLP29 belonged to B. thuringiensis ssp. israelensis (H14). Its mosquitocidal activity was more twofold higher than the control strain IPS82, a Bti mosquitocidal strain used for production. Meanwhile, it had a higher growth rate than IPS82, which would reduce the cost by shortening the production cycle. It was indicated that LLP29 might be a potential biocontrol agent in the control and prevention of mosquitoes and mosquito-borne diseases.

Keywords:Microbiology; Application; Bacillus thuringiensis; Biological property; Growth rate; Mosquitocidal activities

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