Data/hora: 20/06/2024 16:06:01

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: | --
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (24592-1) - ADD - SP - -- -  -  - 22402 - DIS