Perspectives and challenges of micro/nano plastics induced toxicity with special reference to phytotoxicity

Global Change Biology
Sukhendu Maity, Kousik Pramanick

Abstract

Plastics pollution has become a global concern for ecosystem health and biodiversity conservation. Concentrations of plastics are manifold higher in terrestrial system than the aquatic one. Micro/nano plastics have the ability to alter soil enzymatic system, soil properties and also affect soil borne microorganisms and earthworms. Despite, almost all works targeting ecotoxicological potential of micro/nano plastics are based on aquatic system and reports on their phytotoxic potentials are limited. The presence of cell wall that could restrict micro/nano plastics invasion into plant roots might be the putative cause of this limitation. Micro/nano plastics inhibit plant growth, seed germination and gene expression; and they also induce cytogenotoxicity by aggravating ROS (Reactive Oxygen Species) generation. Dynamic behaviour of cell wall; the pores formed either by cell wall degrading enzymes or by plant-pathogen interactions or by mechanical injury might facilitate the micro/nano plastics entry into roots. This review also provides the possible mechanism of large sized microplastics induced phytotoxicity especially for those that cannot pass through cell wall pores. As micro/nano plastics affect soil microbial community and soi...Continue Reading

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Mar 13, 2021·Environmental Pollution·Necla Pehlivan, Kenan Gedik
Apr 25, 2021·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Sara MatthewsElvis Genbo Xu
Sep 2, 2021·The Science of the Total Environment·Sudisha JogaiahMuthusamy Govarthanan

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