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Tier 2
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Original research — experimental, observational, or case-control study. Direct primary evidence.
Human Health Effects
Nanoplastics
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Are nanoplastics potentially toxic for plants and rhizobiota? Current knowledge and recommendations
NanoImpact2023
11 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 40
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
This review evaluates whether nanoplastics — the smallest plastic fragments, formed as larger plastics break down — are toxic to plants and the microorganisms living around their roots (rhizobiota). The evidence suggests nanoplastics can directly impair plant growth and indirectly harm soil biology by altering soil chemistry and releasing associated contaminants. Because soil is becoming a major reservoir for plastic pollution, understanding these effects is critical for global food security and soil ecosystem health.
Soil is now becoming a reservoir of plastics in response to global production, use/disposal patterns and low recovery rates. Their degradation is caused by numerous processes, and this degradation leads to the formation and release of plastic nanoparticles, i.e., nanoplastics. The occurrence of nanoplastics in the soil is expected to both directly and indirectly impact its properties and functioning. Nanoplastics may directly impact the physiology and development of living organisms, especially plants, e.g., by modifying their production yield. Nanoplastics can also indirectly modify the physicochemical properties of the soil and, as a result, favour the release of related contaminants (organic or inorganic) and have an impact on soil biota, and therefore have a negative effect on the functioning of rhizospheres. However all these results have to be taken carefully since performed with polymer nano-bead not representative of the nanoplastics observed in the environment. This review highlight thus the current knowledge on the interactions between plants, rhizosphere and nanoplastics, their consequences on plant physiology and development in order to identify gaps and propose scientific recommendations.