INQUINOA 21218
INSTITUTO DE QUIMICA DEL NOROESTE
Unidad Ejecutora - UE
artículos
Título:
Acid invertase localization in lower vascular plant tissues
Autor/es:
SAYAGO, J.E., ORDOÑEZ R., ISLA, M. I.
Revista:
EUROPEAN JOURNAL OF HISTOCHEMISTRY
Editorial:
ELSEVIER
Referencias:
Año: 2008 vol. 52 p. 255 - 262
ISSN:
1121-760X
Resumen:
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The localization of invertase, a key enzyme in plant carbohydrate
metabolism, has been established in several higher plants, but there are no
reports of it in ferns. The aim of the present work was to establish the
localization of the previously reported acid invertase activity of Pteris
deflexa in fronds tissues and to compare the findings with invertase
localization in higher plants.
Acid invertase, localized by immuno-histochemical and histochemical
techniques on fresh tissues, was evident in vascular tissue, mainly in phloem.
It was also detected in parenchymatic, sclerenchymatic and epidermic cells of
petiole, rachis and rachis branches as well as in veins of leaf blades.
Our results demonstrate that P. deflexa acid invertase
localization is the same to that of higher plants. Hence, potential roles of
the fern enzyme in relation to the storage and utilization of sucrose and to
control carbon flux could be the same of those proposed to higher plants.
