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Interplay of plastic pollution with algae and plants: hidden danger or a blessing?

期刊

JOURNAL OF HAZARDOUS MATERIALS
卷 438, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.jhazmat.2022.129450

关键词

Microplastics; Nanoplastics; Remediation; Plants

资金

  1. research project The unrevealed information on soil biodiversity in leached waters [J4-3098]
  2. Research Program in Forest Biology, Ecology, and Technology of the Slovenian Research Agency [P4-0107]
  3. Severo Ochoa programme of the Autonomous Government of Asturias, Spain [BP19-137]
  4. COST (European Cooperation in Science and Technology) [CA19125]

向作者/读者索取更多资源

Recent research has shown that plants can absorb plastic particles, providing a new approach to removing plastic pollution from water and soil systems. While microplastics are usually unable to be taken up by plant roots, nanoparticles can enter the root system and be transported to upper plant parts via xylem. Algae can degrade plastic particles in water systems through enzyme-facilitated degradation processes, but precautions should be taken to avoid causing algal blooming during the degradation process.
In the era of plastic pollution, plants have been discarded as a system that is not affected by micro and nanoplastics, but contrary to beliefs that plants cannot absorb plastic particles, recent research proved otherwise. The presented review gives insight into known aspects of plants' interplay with plastics and how plants' ability to absorb plastic particles can be utilized to remove plastics from water and soil systems. Microplastics usually cannot be absorbed by plant root systems due to their size, but some reports indicate they might enter plant tissues through stomata. On the other hand, nanoparticles can enter plant root systems, and reports of their transport via xylem to upper plant parts have been recorded. Bioaccumulation of nanoplastics in upper plant parts is still not confirmed. The prospects of using biosystems for the remediation of soils contaminated with plastics are still unknown. However, algae could be used to degrade plastic particles in water systems through enzyme facilitated degradation processes. Considering the amount of plastic pollution, especially in the oceans, further research is necessary on the utilization of algae in plastic degradation. Special attention should be given to the research concerning utilization of algae with restricted algal growth, ensuring that a different problem is not induced, sea blooming, during the degradation of plastics.

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