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Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
26/12/2017 |
Data da última atualização: |
30/10/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FRANCISCO, R.; BRANCO, R.; SCHWAB, S.; BALDANI, J. I. |
Afiliação: |
ROMEU FRANCISCO, UNIVERSIDADE DE COIMBRA.; RITA BRANCO, UNIVERSIDADE DE COIMBRA; STEFAN SCHWAB, CNPAB; JOSE IVO BALDANI, CNPAB. |
Título: |
Impact of plant-associated bacteria biosensors on plant growth in the presence of hexavalent chromium. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
World Journal of Microbiology and Biotechnology, v. 34, n. 12, p. 1-12, 2018. |
ISSN: |
1573-0972 |
DOI: |
https://doi.org/10.1007/s11274-017-2389-0 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Chromium PGPB; Itrospirillum amazonence; Maize. |
Thesaurus Nal: |
Ochrobactrum tritici; rice. |
Categoria do assunto: |
S Ciências Biológicas |
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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Embrapa Agrobiologia (CNPAB) |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
29/08/2011 |
Data da última atualização: |
29/08/2011 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
RANGEL, P. H. N.; FERREIRA, M. E.; DIAS NETO, J. J.; ANJOS, L. M. dos. |
Afiliação: |
PAULO HIDEO NAKANO RANGEL, CNPAF; MARCIO ELIAS FERREIRA, CENARGEN; JUSTINO JOSÉ DIAS NETO, UNB; LIAMAR MARIA DOS ANJOS, UNB. |
Título: |
Piramidização de genes de resistência no desenvolvimento de multilinhas de arroz irrigado com resistência estável à brusone (Pyricularia grisea). |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 7., 2011, Balneário Camboriú. Racionalizando recursos e ampliando oportunidades: anais. Itajaí: Epagri, 2011. |
Volume: |
v. 1. |
Páginas: |
p. 232-235. |
Idioma: |
Português |
Conteúdo: |
O objetivo do trabalho foi o desenvolvimento de linhagens quase isogênicas de arroz com diferentes genes de resistência à brusone que poderiam ser misturadas para constituir uma cultivar multilinha, conferindo uma maior estabilidade de resistência no campo à população de isolados do patógeno. |
Palavras-Chave: |
Diversidade de patótipos. |
Thesagro: |
Arroz irrigado; Brusone; Melhoramento genético vegetal; Oryza sativa; Pyricularia Grisea; Resistência. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/40675/1/ft232.pdf
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Marc: |
LEADER 01204nam a2200253 a 4500 001 1899084 005 2011-08-29 008 2011 bl uuuu u00u1 u #d 100 1 $aRANGEL, P. H. N. 245 $aPiramidização de genes de resistência no desenvolvimento de multilinhas de arroz irrigado com resistência estável à brusone (Pyricularia grisea). 260 $aIn: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 7., 2011, Balneário Camboriú. Racionalizando recursos e ampliando oportunidades: anais. Itajaí: Epagri$c2011 300 $ap. 232-235. v. 1. 490 $vv. 1. 520 $aO objetivo do trabalho foi o desenvolvimento de linhagens quase isogênicas de arroz com diferentes genes de resistência à brusone que poderiam ser misturadas para constituir uma cultivar multilinha, conferindo uma maior estabilidade de resistência no campo à população de isolados do patógeno. 650 $aArroz irrigado 650 $aBrusone 650 $aMelhoramento genético vegetal 650 $aOryza sativa 650 $aPyricularia Grisea 650 $aResistência 653 $aDiversidade de patótipos 700 1 $aFERREIRA, M. E. 700 1 $aDIAS NETO, J. J. 700 1 $aANJOS, L. M. dos
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