nanoplastics
Nanoplastics are plastic particles smaller than 1 micrometer that result from the further breakdown of larger microplastics in the environment. These tiny particles can be taken up directly by plant roots and transported through vascular tissues, potentially disrupting nutrient absorption, photosynthesis, and overall growth. Understanding how nanoplastics interact with plant biology is increasingly important as agricultural soils face growing contamination from plastic pollution.
open_in_new WikipediaPubMed · 2026-04-30
Tiny plastic particles called nanoplastics — far smaller than a grain of sand — contaminate soil differently depending on whether they carry a positive or negative electrical charge. A new study found these charged nanoplastics affect corn root zones in distinct ways, yet the soil microbial community around the roots showed a notable ability to resist functional disruption.
Nanoplastics pose greater soil ecological risk than larger microplastics because surface charge governs how readily they are taken up, transported, and accumulated inside plants.
Positively charged nanoplastics (PS-NH2) and negatively charged nanoplastics produced measurably different effects on maize growth, indicating charge type is a key variable in risk assessment.
The rhizosphere microbial community — the dense population of microbes clustered around corn roots — demonstrated functional resistance, maintaining its ecological roles despite nanoplastic exposure.
