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<p>Choosing the right plant species is essential to their effectiveness when using phytoremediation procedures. A pot experiment was conducted under natural field conditions to evaluate the phytoremediation potential of <i>Datura stramonium</i> L. for hexavalent chromium [Cr (VI)] contaminated soil and to assess the role of Cr (VI)-tolerant plant growth–promoting bacteria (PGPB) in enhancing plant performance. Plants were grown in soil amended with 0, 80, 160, and 320&#xa0;mg Cr kg⁻¹ and assessed for morphological, physiological, and biochemical responses. The highest plant growth was observed at 80&#xa0;mg/Kg Cr (VI) concentration. Cr (VI) stress reduced plant growth, water content, and membrane stability, with severe effects at 320&#xa0;mg kg⁻¹; whereas bacterial inoculated sets showed significantly (<i>p</i> &lt; 0.05) improved plant performance, resulting in an approximate 32% increase in biomass production. Inoculated plants exhibited relatively higher antioxidant enzyme activity, with lower stress markers in comparison to uninoculated controls. Soil enzymatic activities such as dehydrogenase and catalase were higher, in addition to ~ 21% decline in soil Cr (VI) availability, in inoculated treatments. <i>D. stramonium</i> showcased enhanced Bio-concentration Factor (BCF) and Tolerance index (Ti) values in inoculated sets. Bacterial inoculation improved Translocation Factor (TF), resulting in an increase in Total Accumulation Rate (TAR) and Phytoremediation Ratio (%PR). Overall, by increasing plant tolerance and storing Cr (VI) mainly to roots, PGPB inoculation increased the phytoremediation efficacy of <i>D. stramonium</i>.</p>

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Enhancement of chromium phytoremediation by Datura stramonium L. through inoculation with chromium tolerant plant growth promoting bacteria

  • 期刊论文

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  • 发表日期：

    2026年5月24日

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  • Akanksha Gupta,
  • Deepak Gupta,
  • Virendra Kumar Mishra

摘要

Choosing the right plant species is essential to their effectiveness when using phytoremediation procedures. A pot experiment was conducted under natural field conditions to evaluate the phytoremediation potential of Datura stramonium L. for hexavalent chromium [Cr (VI)] contaminated soil and to assess the role of Cr (VI)-tolerant plant growth–promoting bacteria (PGPB) in enhancing plant performance. Plants were grown in soil amended with 0, 80, 160, and 320 mg Cr kg⁻¹ and assessed for morphological, physiological, and biochemical responses. The highest plant growth was observed at 80 mg/Kg Cr (VI) concentration. Cr (VI) stress reduced plant growth, water content, and membrane stability, with severe effects at 320 mg kg⁻¹; whereas bacterial inoculated sets showed significantly (p < 0.05) improved plant performance, resulting in an approximate 32% increase in biomass production. Inoculated plants exhibited relatively higher antioxidant enzyme activity, with lower stress markers in comparison to uninoculated controls. Soil enzymatic activities such as dehydrogenase and catalase were higher, in addition to ~ 21% decline in soil Cr (VI) availability, in inoculated treatments. D. stramonium showcased enhanced Bio-concentration Factor (BCF) and Tolerance index (Ti) values in inoculated sets. Bacterial inoculation improved Translocation Factor (TF), resulting in an increase in Total Accumulation Rate (TAR) and Phytoremediation Ratio (%PR). Overall, by increasing plant tolerance and storing Cr (VI) mainly to roots, PGPB inoculation increased the phytoremediation efficacy of D. stramonium.