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https://locus.ufv.br//handle/123456789/23470
Tipo: | Artigo |
Título: | Quantifying the reproduction of Bacillus thuringiensis HD1 in cadavers and live larvae of Plutella xylostella |
Autor(es): | Elliot, Simon L. Raymond, Ben Ellis, Richard J. |
Abstract: | The Bacillus cereus group comprises a range of micro-organisms with diverse habits, including gut commensals, opportunistic pathogens and soil saprophytes. Using quantitative microbiological methods we tested whether Bacillus thuringiensis (Bt) could reproduce in cadavers of Plutella xylostella killed by Bt, or in the gut of live insects, or be transmitted vertically from females to their offspring. We also tested whether diverse Bt strains could grow in high nutrient broth at a pH similar to that in the larval midgut. Low levels of reproduction were found in insect cadavers but there was no evidence of vertical transmission, or of significant reproduction in live insects. Four strains of B. thuringiensis var. kurstaki and one of B. thuringiensis var. tenebrionis were found to be capable of growth at high pH. Greater spore recovery rates in frass were found in hosts that were resistant or tolerant of infection. We concluded that that spores recovered in frass represent, in general, an ungerminated fraction of ingested inoculum and that germination rates are reduced in unsuitable hosts. |
Palavras-chave: | Diamondback moth Transmission Reproductive strategy Sub-lethal Vertical transmission |
Editor: | Journal of Invertebrate Pathology |
Tipo de Acesso: | 2008 Elsevier Inc. All rights reserved. |
URI: | https://doi-org.ez35.periodicos.capes.gov.br/10.1016/j.jip.2008.01.005 http://www.locus.ufv.br/handle/123456789/23470 |
Data do documento: | Jul-2008 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | Texto completo | 230,35 kB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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