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VOL. 10, ISSUE 4 (2025)
Antioxidant enzyme responses in Ceratophyllum demersum L. and Eichhornia crassipes mart (solms) under chromium-induced oxidative stress
Authors
Suvarna Ubale, Sangeeta Ahuja
Abstract
The present investigation was carried out to evaluate the antioxidant
enzyme response in two aquatic macrophytes, Ceratophyllum demersum L. and
Eichhornia crassipes Mart (Solms), under
chromium-induced oxidative stress. The study was conducted in 2021 under
controlled laboratory conditions using potassium dichromate to simulate
chromium pollution at concentrations of 1.0, 2.5, 5.0, 7.5, 10.0, 12.5, and
15.0 mg/L. Fresh plant tissues were subjected to enzymatic assays after 3, 7,
10, 20, and 30 days of exposure. Enzyme activity of superoxide dismutase (SOD),
catalase (CAT), and ascorbate peroxidase (APX) was quantified and expressed as
units per mg of protein. In C. demersum L., SOD and CAT activity
increased at moderate chromium levels but declined at higher concentrations. In
contrast, E. crassipes Mart (Solms) exhibited a concentration-dependent increase
in SOD and APX activity up to 5.0 mg/L, followed by a reduction at higher
levels. Maximum CAT activity (2.45 ± 0.014 U/mg) was recorded in E.
crassipes Mart (Solms) at
5 mg/L after 20 days. The enzyme responses suggest that both species possess
differential but effective antioxidant defense mechanisms, making them
promising candidates for phytoremediation of chromium-contaminated aquatic
environments.
Pages:38-41
How to cite this article:
Suvarna Ubale, Sangeeta Ahuja "Antioxidant enzyme responses in <i>Ceratophyllum demersum </i>L. and <i>Eichhornia crassipes </i>mart (solms)<i> </i>under chromium-induced oxidative stress". International Journal of Biology Research, Vol 10, Issue 4, 2025, Pages 38-41
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