Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/34522
Título: Transfer of Cry1F from Bt maize to eggs of resistant Spodoptera frugiperda
Palavras-chave: Intergenerational transfer
Plant defense
Cry toxins
Transferência intergeracional
Defesa vegetal
Toxinas cry
Data do documento: 2018
Editor: PLOS ONE
Citação: SOUZA, C. S. F. et al. Transfer of Cry1F from Bt maize to eggs of resistant Spodoptera frugiperda. PLoS ONE, [S. l.], v. 13, n. 9, p. 1-10. DOI: https://doi.org/10.1371/journal.pone.0203791.
Resumo: The intergenerational transfer of plant defense compounds by aposematic insects is well documented, and since 2006, has been shown for Cry toxins. Cry toxins are proteins naturally produced by the soil bacterium Bacillus thuringiensis (Bt) and its genes have been expressed in plants to confer insect pest resistance. In this work we tested if non-aposematic larvae of a major maize pest, Spodoptera frugiperda, with resistance to Cry1F, could transfer Cry1F from a genetically engineered maize variety to their offspring. Resistant 10-day-old larvae that fed on Cry1F Bt maize until pupation were sexed and pair-mated to produce eggs. Using ELISA we found that Cry1F was transferred to offspring (1.47–4.42 ng Cry1F/10 eggs), a toxin concentration about 28–83 times less than that detected in Cry1F Bt maize leaves. This occurred when only one or both sexes were exposed, and more was transferred when both parents were exposed, with transitory detection in the first five egg masses. This work is an unprecedented demonstration that a non-aposematic, but resistant, species can transfer Cry1F to their offspring when exposed to Bt host plant leaves as immatures.
URI: http://repositorio.ufla.br/jspui/handle/1/34522
Aparece nas coleções:DEN - Artigos publicados em periódicos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
ARTIGO_Transfer of Cry1F from Bt maize to eggs of resistant Spodoptera frugiperda.pdf1,51 MBAdobe PDFVisualizar/Abrir


Este item está licenciada sob uma Licença Creative Commons Creative Commons