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Changes in antioxidant enzyme activities in Eichhornia crassipes (Pontederiaceae) and Pistia stratiotes (Araceae) under heavy metal stress

dc.creatorOdjegba, V.J.
dc.creatorFasidi, I.O.
dc.date2007-05-07
dc.date.accessioned2016-05-03T15:28:47Z
dc.date.available2016-05-03T15:28:47Z
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/5958
dc.identifier10.15517/rbt.v55i3-4.5958
dc.identifier.urihttps://hdl.handle.net/10669/26512
dc.descriptionWhole plants of Eichhornia crassipes and Pistia stratiotes were exposed to various concentrations (0, 0.1, 0.3, 0.5, 1.0, 3.0 and 5.0 mM) of 8 heavy metals (Ag, Cd, Cr, Cu, Hg, Ni, Pb and Zn) hydroponically for 21 days. Spectrometric assays for the total activity of catalase, peroxidase, and superoxide dismutase in the leaves were studied. At the end of the experimental period, data referred to metal treated plants were compared to data of untreated ones (control). Heavy metals increased the activity of catalase, peroxidase and superoxide dismutase in both species and there was differential inducement among metals. Overall, Zn had the least inducement of antioxidant enzymes in both species while Hg had the highest inducement. The increase in antioxidant enzymes in relation to the control plants was more in E. crassipes than P. stratiotes. The results showed that E. crassipes tolerated higher metal concentrations in a greater number of metals than P. stratiotes.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherUniversidad de Costa Ricaen-US
dc.rightsCopyright (c) 2014 International Journal of Tropical Biology and Conservationen-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 55 (3-4) September-December 2007en-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 55 (3-4) September-December 2007es-ES
dc.sourceRevista Biología Tropical; Vol. 55 (3-4) September-December 2007pt-PT
dc.source2215-2075
dc.source0034-7744
dc.source10.15517/rbt.v55i3-4
dc.titleChanges in antioxidant enzyme activities in Eichhornia crassipes (Pontederiaceae) and Pistia stratiotes (Araceae) under heavy metal stressen-US
dc.titleChanges in antioxidant enzyme activities in Eichhornia crassipes (Pontederiaceae) and Pistia stratiotes (Araceae) under heavy metal stresses-ES
dc.typeartículo original
dc.coverageCRCen-US


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