Gibberellic acid stimulation of isoperoxidase from pedicel of grape

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dc.contributor.authorPérez, FJ
dc.contributor.authorGomez, M
dc.date.accessioned2025-01-21T01:32:39Z
dc.date.available2025-01-21T01:32:39Z
dc.date.issued1998
dc.description.abstractSoluble peroxidase activity from pedicels of cv. Thompson seedless grape was highly stimulated by post-bloom gibberellic acid (GA(3)) applications to vines. This stimulation was dependent on the dose employed and increased with berry ripening. In control vines, i.e. non GA(3) treated, the level of peroxidase activity remained constant during; berry ripening. Isoelectrofocusing (IEF) analysis of soluble peroxidases from pedicel extracts performed ina 3-10 pH range, showed the presence of a main band that corresponded to an acidic isoperoxidase of (pI 3.5) and the presence of a minor band of (pI 3.9). It is a well-known fact that GA, applications to cv. Thompson seedless grape beside producing berry enlargement cause berry-drop which has been associated with pedicel thickening. Here we found a positive correlation between pedicel thickness and peroxidase activity within the rates of GA, used. The involvement of the acidic isoperoxidases in pedicel thickening and its relation to berry-drop are discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.issn0031-9422
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97299
dc.identifier.wosidWOS:000074422400001
dc.issue.numero3
dc.language.isoen
dc.pagina.final414
dc.pagina.inicio411
dc.revistaPhytochemistry
dc.rightsacceso restringido
dc.subjectgrapes
dc.subjectperoxidase
dc.subjectgibberellic acid
dc.subjectpedicel
dc.subjectThompson seedless
dc.subjectVitis vinifera
dc.subjectVitaceae
dc.titleGibberellic acid stimulation of isoperoxidase from pedicel of grape
dc.typeartículo
dc.volumen48
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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