Organ-dependent GST activation in Ocimum basilicum by endosulfan exposure
DOI:
https://doi.org/10.29105/qh3.1-164Palabras clave:
Phytoremediation, Endosulfan, Ocimum basilicum, plant GSTResumen
Ocimum basilicum L., Basil, has shown to be a bioremediator candidate for the organochlorine pesticide endosulfan.
Nevertheless, the mechanism ofphytoremediation ofthe pesticide is still unknown. Glutathione-S-Transferase (GST) is an
enzyme involved in plant defense against pollutants and oxidative damage. Because of this, GST activity changes would
be expected after an exposition to endosulfan. Thus, to evaluate the response of basil to endosulfan exposure, we
measured GST activity in leaves, roots, stems and rhizosphere. Plants were exposed to O, 10, 100, 1000 mg endosulfan/Kg
of soil. Toe GST activity increased after endosulfan exposure depends on organ and endosulfan concentration. In leaves,
GST activity increased at 10 mg/Kg, but decreased at 1000 mg/Kg. Root GST activity was increased at 10 mg/Kg, but
became normal at higher concentrations of endosulfan. GST activity from stem and rhizosphere showed no significant
variation with the endosulfan concentration.
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Derechos de autor 2013 Maricela Ramírez Sandoval , Jesús Bernardino Velázquez Fernández
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
