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The Toxicity of Bacillus thuringiensis Strains h3 fromOceans and Ly30 from Insect Larvae AgainstDiamondback Moth(Lepidoptera),Culex pipienspallens and Musca domestica(Diptera),Blattella germanica(Coleoptera)(PDF)

《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2018年03期
Page:
109-
Research Field:
·生命科学·
Publishing date:

Info

Title:
The Toxicity of Bacillus thuringiensis Strains h3 fromOceans and Ly30 from Insect Larvae AgainstDiamondback Moth(Lepidoptera),Culex pipienspallens and Musca domestica(Diptera),Blattella germanica(Coleoptera)
Author(s):
Wei HuaYuan ShengZhang Wen
School of Life Sciences,Nanjing Normal University,Jiangsu Key Laboratory for Microbes and Functional Genomics,Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources,Nanjing 210023,China
Keywords:
Bacillus thuringiensisColeopteraLepidopteraDipterainsecticidal activity
PACS:
TQ458
DOI:
10.3969/j.issn.1001-4616.2018.03.017
Abstract:
In order to find and identify more targets species of pests for toxic insecticidal Bacillus thuringiensis(Bt)strains,a toxicity survey was carried out of two strains h3 and Ly30 against diamondback moth(Lepidoptera),Culex pipiens pallens and Musca domestica(Diptera),Blattella germanica(Coleoptera),which were respectively isolated from Lianyungang oceans with excellent characteristic of high salt tolerance,and from insect Componotus iaponicu Mayr larvae,respectively. Bioassay showed that h3 and Ly30 have efficient insecticidal activity against diamondback moth(Lepidoptera),Culex pipiens pallens and Musca domestica(Diptera)by 99%-100% mortality at 3 d-5 d,while only have 30% mortality at 5 d against coleoptera pests. It provided strong evidence for the insecticidal role of autotrophic Bt strains h3 and Ly30 against pests populations of lepidoptera and diptera and coleoptera,and aslo evidence for the application in the fields of agriculture and forest and public health. Furthermore,high salt tolerance of h3 could provide great benefit not only in expanding the application fields of biological insecticides,but also increasing the applicable object,and enhancing the efficacy of Bt.

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Last Update: 2018-11-19