1998
DOI: 10.1021/es980089x
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Abstract: Reduction of heavy metals in situ by plants may be a useful detoxification mechanism for phytoremediation. Using X-ray spectroscopy, we show that Eichhornia crassipes (water hyacinth), supplied with Cr(VI) in nutrient culture, accumulated nontoxic Cr(III) in root and shoot tissues. The reduction of Cr(VI) to Cr(III) appeared to occur in the fine lateral roots. The Cr(III) was subsequently translocated to leaf tissues. Extended X-ray absorption fine structure of Cr in leaf and petiole differed when compared to … Show more

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Cited by 292 publications
(166 citation statements)
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“…This significant decline is an indication of the severe stress caused by Cr(VI) that oxidizes the bioorganic materials especially the protein of the cells. Several previous studies have indicated the reduction of other plants biomass as the concentration of Cr(VI) increases in the nutrient medium (Lytle et al, 1998;Shahandeh and Hossner, 2000;Shanker et al, 2005). When the total chromium in both roots and shoots is calculated, the total amount removed by five plants grown in one pot was increased from 0.90 ± 0.15 mg for plants irrigated with 50 mg kg -1 to 3.00 ± 0.34 mg at 200 mg kg -1 , then it declined as the chromium in irrigation solution was increased above 200 mg kg -1 (Figure 6).…”
Section: Plant Growth and Total Removed Chromiummentioning
confidence: 99%
“…This significant decline is an indication of the severe stress caused by Cr(VI) that oxidizes the bioorganic materials especially the protein of the cells. Several previous studies have indicated the reduction of other plants biomass as the concentration of Cr(VI) increases in the nutrient medium (Lytle et al, 1998;Shahandeh and Hossner, 2000;Shanker et al, 2005). When the total chromium in both roots and shoots is calculated, the total amount removed by five plants grown in one pot was increased from 0.90 ± 0.15 mg for plants irrigated with 50 mg kg -1 to 3.00 ± 0.34 mg at 200 mg kg -1 , then it declined as the chromium in irrigation solution was increased above 200 mg kg -1 (Figure 6).…”
Section: Plant Growth and Total Removed Chromiummentioning
confidence: 99%
“…To fully altered by microbes [11][12][13], green algae [14], higher plants understand the geochemistry of Cr in the environment it [14,15] and mineral surfaces [16][17][18][19]. Therefore, techniques is necessary to identify redox intermediates and the that determine Cr oxidation state are important bio/ associated pathways involved in the interconversion of geochemical tools.…”
Section: Introductionmentioning
confidence: 99%
“…Aquatic plants released minerals helping bacteria to survive and in return, bacteria supported plants to grow well [14]. Lytle et al stated that the activity of Eichornia crassipes at higher concentration was significant as it could uptake and translocate chromium despite of presence of chromium resistant bacterial strains [17]. Similarly, Jaikumar reported that Eichornia crassipes decreased the pollution of drainage water lakes by uptake of heavy metals [18].…”
Section: Wave Numbermentioning
confidence: 99%