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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
26/12/2017 |
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Data da última atualização: |
30/10/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FRANCISCO, R.; BRANCO, R.; SCHWAB, S.; BALDANI, J. I. |
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Afiliação: |
ROMEU FRANCISCO, UNIVERSIDADE DE COIMBRA.; RITA BRANCO, UNIVERSIDADE DE COIMBRA; STEFAN SCHWAB, CNPAB; JOSE IVO BALDANI, CNPAB. |
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Título: |
Impact of plant-associated bacteria biosensors on plant growth in the presence of hexavalent chromium. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
World Journal of Microbiology and Biotechnology, v. 34, n. 12, p. 1-12, 2018. |
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ISSN: |
1573-0972 |
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DOI: |
https://doi.org/10.1007/s11274-017-2389-0 |
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Idioma: |
Inglês |
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Conteúdo: |
Cr(VI) is a highly toxic metal produced by anthropogenic activity which may impact the environment, affecting plants and animals. In plants, chromium both as Cr(III) or Cr(VI) can be absorbed by roots, is poorly translocated and affects negatively plant growth. Plants used in phytoremediation need to cope with chromium toxicity. This work aimed to evaluate strains of Ochrobactrum tritici and Nitrospirillum amazonense, resistant and modified in order to become chromate whole-cell biosensors, as plant-protectors enabling plants to withstand contaminated soils. In vitro tests were performed in three rice varieties and one maize variety. Initial evaluations of Cr(VI) toxicity to plants showed that plants had different sensitivities and BRS 6 CHUÍ rice variety was the most resistant. The metal affected plant growth and development, essentially in roots which were totally inhibited in rice varieties at 500 μM. This effect was plant-dependent. Modified N. amazonense proved to protect maize plants independently of the inoculation dose but O. tritici showed plant specificity and some toxicity when inoculated at high numbers, inhibiting rice development but not maize. Inoculants were directly responsible for growth improvements of specific plant varieties at 1.25 ppm Cr(VI), a concentration which corresponds to a weak soil contamination. Improvements were observed relatively to the Cr(VI)-treated controls, but also relative to the untreated controls, i.e., the benefits went beyond a simple neutralization of inhibition brought by Cr(VI) toxicity. MenosCr(VI) is a highly toxic metal produced by anthropogenic activity which may impact the environment, affecting plants and animals. In plants, chromium both as Cr(III) or Cr(VI) can be absorbed by roots, is poorly translocated and affects negatively plant growth. Plants used in phytoremediation need to cope with chromium toxicity. This work aimed to evaluate strains of Ochrobactrum tritici and Nitrospirillum amazonense, resistant and modified in order to become chromate whole-cell biosensors, as plant-protectors enabling plants to withstand contaminated soils. In vitro tests were performed in three rice varieties and one maize variety. Initial evaluations of Cr(VI) toxicity to plants showed that plants had different sensitivities and BRS 6 CHUÍ rice variety was the most resistant. The metal affected plant growth and development, essentially in roots which were totally inhibited in rice varieties at 500 μM. This effect was plant-dependent. Modified N. amazonense proved to protect maize plants independently of the inoculation dose but O. tritici showed plant specificity and some toxicity when inoculated at high numbers, inhibiting rice development but not maize. Inoculants were directly responsible for growth improvements of specific plant varieties at 1.25 ppm Cr(VI), a concentration which corresponds to a weak soil contamination. Improvements were observed relatively to the Cr(VI)-treated controls, but also relative to the untreated controls, i.e., the benefits went beyon... Mostrar Tudo |
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Palavras-Chave: |
Chromium PGPB; Itrospirillum amazonence; Maize. |
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Thesaurus Nal: |
Ochrobactrum tritici; rice. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 02318naa a2200241 a 4500
001 2083597
005 2018-10-30
008 2018 bl uuuu u00u1 u #d
022 $a1573-0972
024 7 $ahttps://doi.org/10.1007/s11274-017-2389-0$2DOI
100 1 $aFRANCISCO, R.
245 $aImpact of plant-associated bacteria biosensors on plant growth in the presence of hexavalent chromium.$h[electronic resource]
260 $c2018
520 $aCr(VI) is a highly toxic metal produced by anthropogenic activity which may impact the environment, affecting plants and animals. In plants, chromium both as Cr(III) or Cr(VI) can be absorbed by roots, is poorly translocated and affects negatively plant growth. Plants used in phytoremediation need to cope with chromium toxicity. This work aimed to evaluate strains of Ochrobactrum tritici and Nitrospirillum amazonense, resistant and modified in order to become chromate whole-cell biosensors, as plant-protectors enabling plants to withstand contaminated soils. In vitro tests were performed in three rice varieties and one maize variety. Initial evaluations of Cr(VI) toxicity to plants showed that plants had different sensitivities and BRS 6 CHUÍ rice variety was the most resistant. The metal affected plant growth and development, essentially in roots which were totally inhibited in rice varieties at 500 μM. This effect was plant-dependent. Modified N. amazonense proved to protect maize plants independently of the inoculation dose but O. tritici showed plant specificity and some toxicity when inoculated at high numbers, inhibiting rice development but not maize. Inoculants were directly responsible for growth improvements of specific plant varieties at 1.25 ppm Cr(VI), a concentration which corresponds to a weak soil contamination. Improvements were observed relatively to the Cr(VI)-treated controls, but also relative to the untreated controls, i.e., the benefits went beyond a simple neutralization of inhibition brought by Cr(VI) toxicity.
650 $aOchrobactrum tritici
650 $arice
653 $aChromium PGPB
653 $aItrospirillum amazonence
653 $aMaize
700 1 $aBRANCO, R.
700 1 $aSCHWAB, S.
700 1 $aBALDANI, J. I.
773 $tWorld Journal of Microbiology and Biotechnology$gv. 34, n. 12, p. 1-12, 2018.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| 8. |  | COSTA, J. R. da; ALENCAR, J. R. de; COSTA, P. da. Avanços e desafios futuros. In: COSTA, J. R. da; COSTA, P. da; ALMEIDA, J. S. S. E.; HAMMES, V. S. (Ed.). Cidades e comunidades sustentáveis: contribuições da Embrapa. Brasília, DF: Embrapa, 2018. cap. 5, p. 85-88. E-book. (Objetivos de desenvolvimento sustentável, 11). Na publicação: Joanne Régis Costa, Junia Rodrigues Alencar.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Amazônia Ocidental. |
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| 10. | | SANTOS, W. M. S.; ALENCAR, J. R. de; MAXIMO, F. A. Agricultura Digital: softwares e serviços web disponibilizados pela Embrapa para o agronegócio brasileiro. In: MOSTRA DE ESTAGIÁRIOS E BOLSISTAS DA EMBRAPA INFORMÁTICA AGROPECUÁRIA, 14., 2018, Campinas. Resumos expandidos... Brasília, DF: Embrapa, 2018. p. 82-87. (Embrapa Informática Agropecuária. Eventos técnicos & científicos, 1). Editores técnicos: Carla Geovana do Nascimento Macário, Carla Cristiane Osawa, Flávia Bussaglia Fiorini, Maria Fernanda Moura, Poliana Fernanda Giachetto.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital. |
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| 12. | | COSTA, J. R. da; ALENCAR, J. R. de; COSTA, P. da. Advances and future challenges. In: COSTA, J. R. da; COSTA, P. da; ALMEIDA, J. S. S. E.; HAMMES, V. S. (Ed.). Sustainable cities and communities: contributions of Embrapa. Brasília, DF: Embrapa, 2020. p. 81-84. (Sustainable development goals, 11).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Amazônia Ocidental; Embrapa Meio Ambiente. |
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| 15. | | FARIAS, A. R.; ALENCAR, J. R. de; COSTA, J. R. da; COSTA, P. da. Challenges for sustainable urbanization. In: COSTA, J. R. da; COSTA, P. da; ALMEIDA, J. S. S. E.; HAMMES, V. S. (Ed.). Sustainable cities and communities: contributions of Embrapa. Brasília, DF: Embrapa, 2020. p. 19-32. (Sustainable development goals, 11).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Amazônia Ocidental; Embrapa Meio Ambiente. |
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| 18. | | EUCLIDES FILHO, K.; YEGANIANTZ, L.; ALENCAR. J. R. de; NOGUEIRA, J. M.; DURÃES, F. Knowledge, sustainability and bioenergy: Brazil-USA strategic partnership. In: AIEA2 INTERNATIONAL CONFERENCE KNOWLEDGE, SUSTAINABILITY AND BIO-RESOURCES IN THE FURTHER DEVELOPMENT OF AGRI-FOOD SYSTEM, 6., 23rd - 25th July, 2007, Londrina. 1 CD-ROM.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 19. | | OLIVEIRA, M. P. de; ALENCAR, J. R. de; SOUZA, G. da S. Energia renovável: uma análise sobre oferta e demanda de etanol no Brasil. In: CONGRESSO DA SOCIEDADE BRASILEIRA DE ECONOMIA, ADMINISTRAÇÃO E SOCIOLOGIA RURAL, 46., 2008, Rio Branco, AC. [Anais...]. Rio Branco, AC: SOBER, 2008.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Unidades Centrais. |
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| 20. | | FARIAS, A. R.; ALENCAR, J. R. de; COSTA, J. R. da; COSTA, P. da. Desafios para uma urbanização sustentável. In: COSTA, J. R. da; COSTA, P. da; ALMEIDA, J. S. S. E.; HAMMES, V. S. (Ed.). Cidades e comunidades sustentáveis: contribuições da Embrapa. Brasília, DF: Embrapa, 2018. cap. 2, p. 21-36. E-book. (Objetivos de desenvolvimento sustentável, 11). Na publicação: Joanne Régis Costa.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Amazônia Ocidental; Embrapa Roraima; Embrapa Territorial. |
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| Registros recuperados : 29 | |
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