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<p>This study examines uranium-contaminated soil from a mining area in eastern China and uses <i>Solanum nigrum L.</i> as the test plant to evaluate the effect of <i>Stenotrophomonas sp.</i> on enhancing its remediation capacity. The results show that <i>Stenotrophomonas sp.</i> increases uranium accumulation in the aboveground and underground tissues of <i>S. nigrum L.</i> by 11.13–77.32% and 8.85–28.61%, respectively, and reduces rhizospheric uranium concentrations by up to 42.46%. Inoculation also enhances photosynthesis, osmotic adjustment, antioxidant activity, rhizospheric soil organic acids, and soil enzyme activities. These findings indicate that <i>Stenotrophomonas sp.</i> strengthens the remediation efficiency of <i>S. nigrum L.</i>, providing theoretical support and technical guidance for the remediation of uranium-contaminated soils.</p>

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Stenotrophomonas sp. enhances the remediation efficiency of Solanum nigrum L. in uranium-contaminated soil

  • 期刊论文

  • 发表日期：

    2026年1月2日

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  • Zhiqiang Zhang,
  • Shunjing Yang,
  • Yishuo Zhang,
  • Jingying Chen,
  • Zhongkui Zhou

摘要

This study examines uranium-contaminated soil from a mining area in eastern China and uses Solanum nigrum L. as the test plant to evaluate the effect of Stenotrophomonas sp. on enhancing its remediation capacity. The results show that Stenotrophomonas sp. increases uranium accumulation in the aboveground and underground tissues of S. nigrum L. by 11.13–77.32% and 8.85–28.61%, respectively, and reduces rhizospheric uranium concentrations by up to 42.46%. Inoculation also enhances photosynthesis, osmotic adjustment, antioxidant activity, rhizospheric soil organic acids, and soil enzyme activities. These findings indicate that Stenotrophomonas sp. strengthens the remediation efficiency of S. nigrum L., providing theoretical support and technical guidance for the remediation of uranium-contaminated soils.