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Volume 1 article 2 (July 2020)

Ecotoxic effects of Hexavalent Chromium on biochemical parameters of Lemna minor and its bioaccumulation by Lemna minor.

Authors: Neetu Tewari and P. Vasudevan.
Available online: April 29, 2020


Total Downloads: 123

https://doi.org/10.47610/ajeb-2020-a1v2


Abstract: Untreated effluents when discharged into the environment possess potential health hazards to almost all forms of life. Many plants are being used to study the toxic effects of heavy metal pollution on plants. However, aquatic plants like Lemna minor are widely used. Their wide distribution, small size, ease of culture and rapid reproduction rates are the attributes that have led to their use as a cost-effective test model. In the present study batch experiments were conducted to study the effects of Cr (VI) and Cr (III) on biochemical content of Lemna minor. Ecotoxic effect of Cr (VI) and Cr (III) on growth, amount of total chlorophyll, total soluble starch, total free sugar, total soluble proteins and total free amino acids was studied in the present research. It was found that Cr (III) at all the concentrations did not affect any of the study parameters significantly. However, Cr (VI) at and beyond 10 mg/l significantly affected the studied parameters. Bioaccumulation of Cr (VI) and Cr (III) by Lemna minor was also investigated. Substantial Cr (VI) accumulation was detected in Lemna minor while it accumulates very low amounts of Cr (III). Aquatic plant-like Lemna bioaccumulate high amounts of Cr (VI) thus it may help in the treatment of polluted water bodies.

KEYWORDS: Bioaccumulation, Chromium, Duckweed, Ecotoxicity, Lemna.

Competing interests: The authors declare no competing interests.

Article history:
First Received: 4 March 2020
In revised form: 22 April 2020
Accepted: 28 April 2020
Available online: 29 April 2020

Authors and Affiliations:
1. Neetu Tewari (PhD) | First & Corresponding author | Currently independent researcher | Past affiliations include : Brown University, RI, USA; Indian Institute of Technology, New Delhi, India.
2. P. Vasudevan (PhD) | Second author | Professor (retd.) Indian Institute of Technology, New Delhi, India.

Cite this article:    
Tewari, N. and Vasudevan, P. Ecotoxic effects of Hexavalent Chromium on biochemical parameters of Lemna minor and its bioaccumulation by Lemna minor. American Journal of Environmental Biology, (1) 13-24, July 2020. https://doi.org/10.47610/ajeb-2020-a1v2

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Copyright © 2020, AJEB
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Publisher’s note: This journal (AJEB) and its publishers remains neutral with regard to any claims in published maps, institutional affiliations, opinion’s or otherwise. Information presented in this article is the sole responsibility of its authors.


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