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<p>This study evaluates heavy metal bioaccumulation potential of two green filamentous algae species, <i>Cladophora glomerata</i> (L.) Kütz. and <i>Rhizoclonium</i> sp., found in Ganga river. Elevated concentrations of Pb (0.60 ± 0.17&#xa0;mg/L), Cu (0.42 ± 0.05&#xa0;mg/L), and Cr (0.78 ± 0.13&#xa0;mg/L) were detected in the river. Both species showed significant metal uptake, Pb (1.79 ± 0.09&#xa0;mg/g, and 3.05 ± 0.37&#xa0;mg/g), Cu (0.77 ± 0.04&#xa0;mg/g and 0.72 ± 0.04&#xa0;mg/g), and Cr (5.49 ± 0.43&#xa0;mg/g and 0.70 ± 0.05&#xa0;mg/g), respectively. Bioaccumulation factor analysis revealed very high accumulation of Cr in <i>Cladophora</i> and Pb in <i>Rhizoclonium</i>. Significant correlations between Cr in river and <i>Cladophora</i> (r = 0.93, <i>p</i> &lt; 0.05) and between Pb in river and <i>Rhizoclonium</i> (r = 0.89, <i>p</i> &lt; 0.05) underscore their responsiveness to ambient contamination. The findings highlight the species-specific potential of these algae as effective agents of biomonitoring and bioremediation for Cr and Pb, which can contribute to improved environmental monitoring and pollution management in the Ganga River.</p>

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Silent Sentinels: Exceptional Metal Uptake by Two Green Algae from a Highly Contaminated River Stretch

  • 期刊论文

  • 发表日期：

    2025年10月24日

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  • Ashutosh Tripathi-II,
  • Sarojni Rai,
  • Ashutosh Tripathi-I

摘要

This study evaluates heavy metal bioaccumulation potential of two green filamentous algae species, Cladophora glomerata (L.) Kütz. and Rhizoclonium sp., found in Ganga river. Elevated concentrations of Pb (0.60 ± 0.17 mg/L), Cu (0.42 ± 0.05 mg/L), and Cr (0.78 ± 0.13 mg/L) were detected in the river. Both species showed significant metal uptake, Pb (1.79 ± 0.09 mg/g, and 3.05 ± 0.37 mg/g), Cu (0.77 ± 0.04 mg/g and 0.72 ± 0.04 mg/g), and Cr (5.49 ± 0.43 mg/g and 0.70 ± 0.05 mg/g), respectively. Bioaccumulation factor analysis revealed very high accumulation of Cr in Cladophora and Pb in Rhizoclonium. Significant correlations between Cr in river and Cladophora (r = 0.93, p < 0.05) and between Pb in river and Rhizoclonium (r = 0.89, p < 0.05) underscore their responsiveness to ambient contamination. The findings highlight the species-specific potential of these algae as effective agents of biomonitoring and bioremediation for Cr and Pb, which can contribute to improved environmental monitoring and pollution management in the Ganga River.