| Phytoremediation of Cr(VI) by Spirodela polyrrhiza (L.) Schleiden employing reducing and chelating agents. | |
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MedLine Citation:
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PMID: 21598777 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Phytoremediation of Cr(VI) by Spirodela polyrrhiza in binary combinations with low molecular weight organic compounds (LMWOCs) with a reducing or chelating potential, viz., ascorbic acid, citric acid, tartaric acid, oxalic acid, lactic acid, and glycerol was studied in Cr(VI) containing hydroponic media. Significant increase in the relative dry weight of plants with respect to Cr(VI) treated controls was observed with ascorbic acid and glycerol. The uptake of chromium by S. polyrrhiza followed Michaelis-Menten kinetics of active ion uptake. Interaction between Cr and ascorbic acid, oxalic acid, and lactic acid decreased Cr uptake, whereas citric acid, glycerol, and tartaric acid increased it. Supplementation of LMWOCs to Cr(VI) containing media decreased the MDA content of the plants. Multiple regression models revealed that LMWOCs decrease lipid peroxidation independently, as well as that induced by Cr(VI). It was found that superoxide dismutase (SOD), guaiacol peroxidase (GPX), and catalase (CAT) activities were increased significantly in plants growing in media containing Cr(VI). The study established that lactic acid, citric acid, ascorbic acid, and glycerol were most effective in increasing the Cr(VI) phytoremediating potential of S. polyrrhiza and LMWOCs with reducing or chelating properties decrease Cr(VI) stress in S. polyrrhiza. |
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Authors:
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Rajni Bala; Ashwani K Thukral |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of phytoremediation Volume: 13 ISSN: 1522-6514 ISO Abbreviation: Int J Phytoremediation Publication Date: 2011 May-Jun |
Date Detail:
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Created Date: 2011-05-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101136878 Medline TA: Int J Phytoremediation Country: United States |
Other Details:
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Languages: eng Pagination: 465-91 Citation Subset: IM |
Affiliation:
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Department of Botanical & Environmental Sciences, Guru Nanak Dev University, Amritsar, India. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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