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Polymer nanoparticles pass the plant interface
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Parkinson, Sam J., Tungsirisurp, Sireethorn, Joshi, Chitra, Richmond, Bethany L., Gifford, Miriam L., Sikder, Amrita, Lynch, Iseult, O’Reilly, Rachel K. and Napier, Richard (2022) Polymer nanoparticles pass the plant interface. Nature Communications, 13 (1). 7385. doi:10.1038/s41467-022-35066-y ISSN 2041-1723.
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Official URL: https://doi.org/10.1038/s41467-022-35066-y
Abstract
As agriculture strives to feed an ever-increasing number of people, it must also adapt to increasing exposure to minute plastic particles. To learn about the accumulation of nanoplastics by plants, we prepared well-defined block copolymer nanoparticles by aqueous dispersion polymerisation. A fluorophore was incorporated via hydrazone formation and uptake into roots and protoplasts of Arabidopsis thaliana was investigated using confocal microscopy. Here we show that uptake is inversely proportional to nanoparticle size. Positively charged particles accumulate around root surfaces and are not taken up by roots or protoplasts, whereas negatively charged nanoparticles accumulate slowly and become prominent over time in the xylem of intact roots. Neutral nanoparticles penetrate rapidly into intact cells at the surfaces of plant roots and into protoplasts, but xylem loading is lower than for negative nanoparticles. These behaviours differ from those of animal cells and our results show that despite the protection of rigid cell walls, plants are accessible to nanoplastics in soil and water.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | Q Science > QK Botany Q Science > QR Microbiology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||||||
| SWORD Depositor: | Library Publications Router | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Nanoparticles, Arabidopsis thaliana, Plant polymers -- Synthesis, Nanostructured materials -- Environmental aspects, Microplastics -- Analysis, Nanoparticles -- Environmental aspects, Plant physiology, Plastics -- Environmental aspects | ||||||||||||
| Journal or Publication Title: | Nature Communications | ||||||||||||
| Publisher: | Nature Publishing Group UK | ||||||||||||
| ISSN: | 2041-1723 | ||||||||||||
| Official Date: | 30 November 2022 | ||||||||||||
| Dates: |
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| Volume: | 13 | ||||||||||||
| Number: | 1 | ||||||||||||
| Article Number: | 7385 | ||||||||||||
| DOI: | 10.1038/s41467-022-35066-y | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Reuse Statement (publisher, data, author rights): | |||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
| Date of first compliant deposit: | 8 December 2022 | ||||||||||||
| Date of first compliant Open Access: | 8 December 2022 | ||||||||||||
| RIOXX Funder/Project Grant: |
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