Scholarlink

Objective <p>Wetland plants serve as natural barriers against microplastic (MP) pollution, yet the specific retention pathways and physiological tolerance mechanisms remain underexplored. This study aimed to evaluate the phytoremediation potential of nine emergent aquatic plants and identify optimal candidates for MP removal.</p> Methods <p>Co-culture experiments were conducted using varying MP polymer types (PE, PP, PS) and concentrations. Adsorption behaviors and plant physiological responses were systematically analyzed across the nine emergent plant species.</p> Results <p>The results showed that emergent plant roots can effectively accumulate MPs. The average weak and strong adsorption capacities were 9.8 ± 4.5 and 6.3 ± 2.3 mg/g, respectively, with <i>Arundo donax</i> L. exhibiting the highest retention. This high retention was primarily attributed to the plant's dense root cellulose network, which might facilitate physical entanglement and chemical bonding. Total adsorption ability was polymer-dependent (PE PP PS), with strong adsorption reaching 242 ± 36.4 particles/g root dry weight under 5 mg/L PE exposure. Furthermore, <i>A. donax</i> L. demonstrated significant physiological tolerance at subthreshold concentrations (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\le\)</EquationSource> <EquationSource Format="MATHML"><math> <mo>≤</mo> </math></EquationSource> </InlineEquation>&#xa0;5 mg/L) by activating antioxidant enzymes to neutralize reactive oxygen species, although higher concentrations triggered oxidative damage.</p> Conclusion <p>This study elucidates the critical role of root architecture and cellulose content in MP interception, proposing <i>A. donax</i> L. as a pioneer species for the safe phytoremediation of MP-contaminated aquatic environments.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Phytoremediation of emergent plants towards microplastics indoor: adsorption and physiological stress responses

  • 期刊论文

  • 发表日期：

    2026年7月27日

查看全文
  • Hang Yang,
  • Yaru Tao,
  • Zhilin Zhuang,
  • Lingyao Qi,
  • Zhirui Zhao,
  • Hongyu Zhou,
  • Wenyu Zhao,
  • Jun Liu,
  • Lu Du,
  • Yonghua Chen

摘要

Objective

Wetland plants serve as natural barriers against microplastic (MP) pollution, yet the specific retention pathways and physiological tolerance mechanisms remain underexplored. This study aimed to evaluate the phytoremediation potential of nine emergent aquatic plants and identify optimal candidates for MP removal.

Methods

Co-culture experiments were conducted using varying MP polymer types (PE, PP, PS) and concentrations. Adsorption behaviors and plant physiological responses were systematically analyzed across the nine emergent plant species.

Results

The results showed that emergent plant roots can effectively accumulate MPs. The average weak and strong adsorption capacities were 9.8 ± 4.5 and 6.3 ± 2.3 mg/g, respectively, with Arundo donax L. exhibiting the highest retention. This high retention was primarily attributed to the plant's dense root cellulose network, which might facilitate physical entanglement and chemical bonding. Total adsorption ability was polymer-dependent (PE PP PS), with strong adsorption reaching 242 ± 36.4 particles/g root dry weight under 5 mg/L PE exposure. Furthermore, A. donax L. demonstrated significant physiological tolerance at subthreshold concentrations ( \(\le\) ≤  5 mg/L) by activating antioxidant enzymes to neutralize reactive oxygen species, although higher concentrations triggered oxidative damage.

Conclusion

This study elucidates the critical role of root architecture and cellulose content in MP interception, proposing A. donax L. as a pioneer species for the safe phytoremediation of MP-contaminated aquatic environments.

Graphical Abstract