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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/02/2009 |
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Data da última atualização: |
18/02/2009 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA-FILHO, E. C.; MUNIZ, D. H. F.; FERREIRA, M. F. N.; GRISOLIA, C. K. |
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Afiliação: |
Eduardo Cyrino Oliveira-Filho, CPAC; D. H. F. Muniz; M. F. N. Ferreira, UnB; C. K. Grisolia, UnB. |
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Título: |
Toxicidade aguda, citoxicidade e genotoxicidade de rejeito da mineração de níquel sobre peixes de água doce. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: CONGRESSO DE GENÉTICA DO CENTRO-OESTE, 1., 2008, Brasília. Resumos. Brasília: Universidade de Brasília, 2008. p. 44. |
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Idioma: |
Português |
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Notas: |
Resumo - C0044 |
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Palavras-Chave: |
Rejeito; Toxicidade. |
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Thesagro: |
Mineração; Níquel. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00684naa a2200205 a 4500
001 1571821
005 2009-02-18
008 2008 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA-FILHO, E. C.
245 $aToxicidade aguda, citoxicidade e genotoxicidade de rejeito da mineração de níquel sobre peixes de água doce.
260 $c2008
500 $aResumo - C0044
650 $aMineração
650 $aNíquel
653 $aRejeito
653 $aToxicidade
700 1 $aMUNIZ, D. H. F.
700 1 $aFERREIRA, M. F. N.
700 1 $aGRISOLIA, C. K.
773 $tIn: CONGRESSO DE GENÉTICA DO CENTRO-OESTE, 1., 2008, Brasília. Resumos. Brasília: Universidade de Brasília, 2008. p. 44.
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Registro original: |
Embrapa Cerrados (CPAC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
29/05/2014 |
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Data da última atualização: |
23/05/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
ARGÔLO FILHO, R. C.; COSTA, R. L.; PINHEIRO, H. E.; CORRÊA, F. M.; VALICENTE, F. H.; POMELLA, A. W. V.; LOGUERCIO, L. L. |
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Afiliação: |
FERNANDO HERCOS VALICENTE, CNPMS. |
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Título: |
Requirement of simultaneous assessment of crystal- and supernatant-related entomotoxic activities of Bacillus thuringiensis strains for biocontrol-product development. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Toxins, v. 6, p. 1598-1614, 2014. |
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DOI: |
10.3390/toxins6051598 |
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Idioma: |
Inglês |
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Conteúdo: |
Bioinsecticides with lower concentrations of endospores/crystals and without loss of efficiency are economically advantageo us for pest biocontrol. In addition to Cry proteins, other Bacillus thuringiensis (Bt) toxins in culture supernatants (SN) have biocontrol potential (e.g., Vip3A, Cry1I, Sip1), whereas others are unwanted (?-exotoxins), as they display widespread toxicity across taxa. A strain simultaneously providing distinct toxin activities in crystals and SN would be desirable for bioinsecticides development; however, strains secreting ?-exotoxins should be discarded, independently of other useful entomotoxins. Entomotoxicity of crystals and SN from a Brazilian Bt tolworthi strain (Btt01) was tested against Spodoptera frugiperd to assess the potential for biocontrol-product development based on more than one type of toxin/activity. Tests showed that 107 endospores mL?1 caused >80% of larvae mortality, suggesting Btt01 may be used in similar concentrations as those of other Bt-based biopesticides. When it was applied to cornfields, a significant 60% reduction of larvae infestation was observed. However, bioassays with Btt01 SN revealed a thermostable toxic activity. Physicochemical characterization strongly suggests the presence of unwanted ?-exotoxins, with isolate specific temporal variation in its secretion. Knowledge of the temporal pattern of secretion/activity in culture for all forms of toxins produced by a single strain is required to both detect useful activities and avoid the potential lack of identification of undesirable toxins. These findings are discussed in the contexts of commercial Bt product development, advantages of multiple-activity strains, and care and handling recommended for large-scale fermentation systems. MenosBioinsecticides with lower concentrations of endospores/crystals and without loss of efficiency are economically advantageo us for pest biocontrol. In addition to Cry proteins, other Bacillus thuringiensis (Bt) toxins in culture supernatants (SN) have biocontrol potential (e.g., Vip3A, Cry1I, Sip1), whereas others are unwanted (?-exotoxins), as they display widespread toxicity across taxa. A strain simultaneously providing distinct toxin activities in crystals and SN would be desirable for bioinsecticides development; however, strains secreting ?-exotoxins should be discarded, independently of other useful entomotoxins. Entomotoxicity of crystals and SN from a Brazilian Bt tolworthi strain (Btt01) was tested against Spodoptera frugiperd to assess the potential for biocontrol-product development based on more than one type of toxin/activity. Tests showed that 107 endospores mL?1 caused >80% of larvae mortality, suggesting Btt01 may be used in similar concentrations as those of other Bt-based biopesticides. When it was applied to cornfields, a significant 60% reduction of larvae infestation was observed. However, bioassays with Btt01 SN revealed a thermostable toxic activity. Physicochemical characterization strongly suggests the presence of unwanted ?-exotoxins, with isolate specific temporal variation in its secretion. Knowledge of the temporal pattern of secretion/activity in culture for all forms of toxins produced by a single strain is required to both detect useful activ... Mostrar Tudo |
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Thesagro: |
Toxina. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02484naa a2200217 a 4500
001 1987282
005 2017-05-23
008 2014 bl uuuu u00u1 u #d
024 7 $a10.3390/toxins6051598$2DOI
100 1 $aARGÔLO FILHO, R. C.
245 $aRequirement of simultaneous assessment of crystal- and supernatant-related entomotoxic activities of Bacillus thuringiensis strains for biocontrol-product development.$h[electronic resource]
260 $c2014
520 $aBioinsecticides with lower concentrations of endospores/crystals and without loss of efficiency are economically advantageo us for pest biocontrol. In addition to Cry proteins, other Bacillus thuringiensis (Bt) toxins in culture supernatants (SN) have biocontrol potential (e.g., Vip3A, Cry1I, Sip1), whereas others are unwanted (?-exotoxins), as they display widespread toxicity across taxa. A strain simultaneously providing distinct toxin activities in crystals and SN would be desirable for bioinsecticides development; however, strains secreting ?-exotoxins should be discarded, independently of other useful entomotoxins. Entomotoxicity of crystals and SN from a Brazilian Bt tolworthi strain (Btt01) was tested against Spodoptera frugiperd to assess the potential for biocontrol-product development based on more than one type of toxin/activity. Tests showed that 107 endospores mL?1 caused >80% of larvae mortality, suggesting Btt01 may be used in similar concentrations as those of other Bt-based biopesticides. When it was applied to cornfields, a significant 60% reduction of larvae infestation was observed. However, bioassays with Btt01 SN revealed a thermostable toxic activity. Physicochemical characterization strongly suggests the presence of unwanted ?-exotoxins, with isolate specific temporal variation in its secretion. Knowledge of the temporal pattern of secretion/activity in culture for all forms of toxins produced by a single strain is required to both detect useful activities and avoid the potential lack of identification of undesirable toxins. These findings are discussed in the contexts of commercial Bt product development, advantages of multiple-activity strains, and care and handling recommended for large-scale fermentation systems.
650 $aToxina
700 1 $aCOSTA, R. L.
700 1 $aPINHEIRO, H. E.
700 1 $aCORRÊA, F. M.
700 1 $aVALICENTE, F. H.
700 1 $aPOMELLA, A. W. V.
700 1 $aLOGUERCIO, L. L.
773 $tToxins$gv. 6, p. 1598-1614, 2014.
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