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| Oliveira,Jurandi Gonçalves de; Bressan-Smith,Ricardo Enrique; Campostrini,Eliemar; Cunha,Maura Da; Costa,Ernani Santos; Torres Netto,Alena; Coutinho,Kelly da Silva; SILVA,Marcelo Gomes da; Vitória,Angela Pierre. |
| Gelled aspect in papaya fruit is typically confused with premature ripening. This research reports the characterization of this physiological disorder in the pulp of papaya fruit by measuring electrolyte leakage, Pi content, lipid peroxidation, pulp firmness, mineral contents (Ca, Mg and K - in pulp and seed tissues), and histological analysis of pulp tissue. The results showed that the gelled aspect of the papaya fruit pulp is not associated with tissue premature ripening. Data indicate a reduction of the vacuole water intake as the principal cause of the loss of cellular turgor; while the waterlogged aspect of the tissue may be due to water accumulation in the apoplast. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ultrastructural alterations; Cell turgor; Fruit quality; Physiological disturbances; Biochemical alterations. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452010000400003 |
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| Upadhyay,RishiKesh; Panda,Sanjib Kumar. |
| In this work, the changing effect of different concentrations (0, 0.01, 0.1, 1, 10mM) of hexavalent and trivalent chromium on different biochemical parameters along with antioxidant enzymes was investigated on water lettuce (Pistia stratiotes L.) in order to know the possible involvement of this metal in oxidative injury, besides the activities of antioxidant enzymes leading to biochemical and oxidative aberration induced by elevated concentrations. Both in roots and shoots, Cr produced a significant increase in enzymic and non-enzymic antioxidants, except in catalase (CAT) activity where a strong accumulation of hydrogen peroxide was indicated, suggesting an imposition of oxidative stress. The observation showed an uptake of chromium by P. stratiotes L.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochemical alterations; Chromium stress; Lipid peroxidation; Oxidative stress; Pistia stratiotes L; Reactive oxygen species. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500018 |
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