Modulation of antioxidant defence system for detoxification of oxidative stress caused by tannery effluent in Eichhornia crassipes

Authors

  • Kiran Gupta Plant Genetic Unit, Botany Department, Lucknow University, Lucknow

DOI:

https://doi.org/10.3126/ije.v3i1.9947

Keywords:

Tannery effluent, Oxidative stress, Antioxidants, Biomarkers, Eichhornia crassipes

Abstract

A study was performed to evaluate capability of aquatic macrophyte Eichhornia crassipes plants to combat oxidative stress caused by tannery effluent treatment. For this purpose, tannery effluent was collected from “Up flow Anaerobic Sludge Blanket” (UASB) Jajmau, Kanpur. Plants of Eichhornia crassipes were exposed to various concentrations of tannery effluent (0.0, 25, 50, 75 and 100%) for 2 and 7 days durations. Plants accumulated significant (p<0.01) amount of Cr (a major constituent of tannery effluent) in a concentration duration dependent manner; which was more in roots (220 mg g-1 dw) than in leaves (83 mg g-1 dw). Tannery effluent induced oxidative stress was evident by increased level of MDA content. To combat oxidative stress plants showed alleviated level of antioxidants as its defense mechanism. Among enzymatic antioxidants, superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) activity increased over to control upto 2nd days of treatment however on exposure of long duration i.e. 7 days these antioxidants declined in correspond to various treatments. Similarly non enzymatic antioxidants (carotenoid and ascorbic acid content) which scavenged free radicals efficiently also showing elevation at all concentrations up to 2 days exposure over unstressed plants, thereafter responded in decreasing manner due to ill effects of treatments. Therefore it can be concluded, E. crassipes can be utilized as a biomonitoring as well as phytoremedial tool using aforesaid biomarkers for pollution caused by tannery effluent.

DOI: http://dx.doi.org/10.3126/ije.v3i1.9947

International Journal of Environment Vol.3(1) 2014: 101-110

Downloads

Download data is not yet available.
Abstract
794
PDF
754

Downloads

Published

2014-02-28

How to Cite

Gupta, K. (2014). Modulation of antioxidant defence system for detoxification of oxidative stress caused by tannery effluent in Eichhornia crassipes. International Journal of Environment, 3(1), 101–110. https://doi.org/10.3126/ije.v3i1.9947

Issue

Vol. 3 No. 1 (2014)

Section

Research Papers

License

The author(s) acknowledge that the manuscript submitted is his/her/their own original work; all authors participated in the work in a substantive way and are prepared to take public responsibility for the work; all authors have seen and approved the manuscript as submitted;  the manuscript has not been published and is not being submitted or considered for publication elsewhere; the text, illustrations, and any other materials included in the manuscript do not infringe(plagiarism) upon any existing copyright or other rights of anyone.

Notwithstanding the above, the Contributor(s) or, if applicable the Contributor’s Employer, retain(s) all proprietary rights other than copyright, such as Patent rights; to use, free of charge, all parts of this article for the author’s future works in books, lectures, classroom teaching or oral presentations; the right to reproduce the article for their own purposes provided the copies are not offered for sale.

The copyright to the contribution identified is transferred to IJE.