Resumen

GUERRERO ZUNIGA, L. Angélica; RODRIGUEZ DORANTES, Angélica Ma.; GASCA RODRIGUEZ, Ma. Aurora  y  BENITEZ IBARRA, Rogelio A.. COMPARACIÓN DE LA CAPACIDAD DE REMOCIÓN DE FENANTRENO Y LA ACTIVIDAD ENZIMÁTICA RADICAL SUPERFICIAL DE CULTIVOS RADICALES (in toto e in vitro) DE Cyperus elegans. Polibotánica [online]. 2005, n.20, pp.31-45. ISSN 1405-2768.

The radical systems may concentrate polycyclic aromatic hydrocarbons, because these compounds are highly lipophilic and hydrophobic, and with it, it can take place the first step involved in a removal process assisted by plants. These contaminants once immobilized on roots can change their structures to simple compounds as an important mechanism for their detoxification. This study evaluated the fenoloxidases activity of the radical system of a swamp species Cyperus elegans, from in toto and in vitro root cultures exposed to phenanthrene, a polycyclic aromatic hydrocarbon highly toxic for environment, for the physiological analysis of these radical systems as a useful tools for the removal and transformation of organic contaminants. Although the remotion of phenanthrene by the radical systems of C. elegans was 32%, an increase of the activity of the radical enzymes was induced by the presence of this contaminant and it suggests that these radical systems would be possible sources of phenoloxidases and might participate directly on the transformation oforganic compounds, particularlywith polycyclic aromatics.

Palabras llave : cyperaceae; phenoloxidases; phytoremediation.

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