Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
24/08/2001 |
Data da última atualização: |
24/08/2001 |
Autoria: |
YU, Q.; WORTH, C.; RENGEL, Z. |
Título: |
Using capillary electrophoresis to measure cu/zn superoxide dismutase concentration in leaves of wheat genotypes differing in tolerance to zinc deficiency. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Plant Science, Calcutta, v. 143, p. 231-239, 1999. |
Idioma: |
Inglês |
Conteúdo: |
Three genotypes of Triticum aestivum L. and one genotype of Triticum turgidum conv. durum differing in tolerance to Zn deficiency were grown in chelate-buffered nutrient solution with or without Zn supply for up to 22 days. Genotypes that were classified as sensitive to Zn deficiency visual symptoms of Zn deficiency on leaves and had the shoot/root ratio reduced, while those classified as tolerant to Zn deficiency showed neither visual symptoms nor decline in the shoot/root ratio when grown without Zn. In an earl stage of Zn deficiency, concentration of the Cu/Zn superoxide dismutase (SOD) protein in leaf tissues measured by capillary electrophoresis was related positively to the tolerance of genotypes to Zn deficiency. In comparison with Zn sufficiency, exposure to Zn deficiency for 13 days caused an increase in Cu/Zn SOD concentration in toleant genotypes, but not in sensitive ones. These results indicate that Cu/Zn SOD might be involved in reducing Zn-deficiency-related oxidative damage in genotypes tolerant to Zn deficiency. |
Palavras-Chave: |
Cu; Genotypes; Zn. |
Thesagro: |
Cobre; Eletroforese; Genótipo; Metal Pesado; Trigo; Zinco. |
Thesaurus Nal: |
copper; electrophoresis; heavy metals; wheat; zinc. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01864naa a2200313 a 4500 001 1621204 005 2001-08-24 008 1999 bl --- 0-- u #d 100 1 $aYU, Q. 245 $aUsing capillary electrophoresis to measure cu/zn superoxide dismutase concentration in leaves of wheat genotypes differing in tolerance to zinc deficiency. 260 $c1999 520 $aThree genotypes of Triticum aestivum L. and one genotype of Triticum turgidum conv. durum differing in tolerance to Zn deficiency were grown in chelate-buffered nutrient solution with or without Zn supply for up to 22 days. Genotypes that were classified as sensitive to Zn deficiency visual symptoms of Zn deficiency on leaves and had the shoot/root ratio reduced, while those classified as tolerant to Zn deficiency showed neither visual symptoms nor decline in the shoot/root ratio when grown without Zn. In an earl stage of Zn deficiency, concentration of the Cu/Zn superoxide dismutase (SOD) protein in leaf tissues measured by capillary electrophoresis was related positively to the tolerance of genotypes to Zn deficiency. In comparison with Zn sufficiency, exposure to Zn deficiency for 13 days caused an increase in Cu/Zn SOD concentration in toleant genotypes, but not in sensitive ones. These results indicate that Cu/Zn SOD might be involved in reducing Zn-deficiency-related oxidative damage in genotypes tolerant to Zn deficiency. 650 $acopper 650 $aelectrophoresis 650 $aheavy metals 650 $awheat 650 $azinc 650 $aCobre 650 $aEletroforese 650 $aGenótipo 650 $aMetal Pesado 650 $aTrigo 650 $aZinco 653 $aCu 653 $aGenotypes 653 $aZn 700 1 $aWORTH, C. 700 1 $aRENGEL, Z. 773 $tPlant Science, Calcutta$gv. 143, p. 231-239, 1999.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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