Do microbial decomposers find micro- and nanoplastics to be harmful stressors in the aquatic environment? A systematic review of in vitro toxicological research

Shruti, V.C.; Kutralam-Muniasamy, Gurusamy; Pérez-Guevara, Fermín

doi:10.1016/j.scitotenv.2023.166561

Cited by 19 publications

(1 citation statement)

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“…FS1903 (Jiang et al 2021 ) play a pivotal role in the decomposition of polystyrene (PS) by facilitating physical and chemical processes. Still, studying the biodegradation of nanoplastics by bacteria is challenging due to their inherent antibacterial properties, which inhibit the growth of many bacteria by causing damage to their cell membranes and production of the reactive oxygen species (ROS) at high nanoplastic concentrations (Shruti et al 2023 ). The gut bacteria of the PS-fed mealworm are among the best sources for isolating and identifying nanoplastic decomposers, they adapt to different concentrations of NPS and mineralize them in short periods (Yang et al 2015b ).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of polystyrene nanoplastics by Achromobacter xylosoxidans M9 offers a mealworm gut-derived solution for plastic pollution

El-Kurdi,

El-Shatoury,

ElBaghdady

et al. 2024

Arch Microbiol

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Nanoplastics pose significant environmental problems due to their high mobility and increased toxicity. These particles can cause infertility and inflammation in aquatic organisms, disrupt microbial signaling and act as pollutants carrier. Despite extensive studies on their harmful impact on living organisms, the microbial degradation of nanoplastics is still under research. This study investigated the degradation of nanoplastics by isolating bacteria from the gut microbiome of Tenebrio molitor larvae fed various plastic diets. Five bacterial strains capable of degrading polystyrene were identified, with Achromobacter xylosoxidans M9 showing significant nanoplastic degradation abilities. Within 6 days, this strain reduced nanoplastic particle size by 92.3%, as confirmed by SEM and TEM analyses, and altered the chemical composition of the nanoplastics, indicating a potential for enhanced bioremediation strategies. The strain also caused a 7% weight loss in polystyrene film over 30 days, demonstrating its efficiency in degrading nanoplastics faster than polystyrene film. These findings might enhance plastic bioremediation strategies. Graphical abstract

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Section: Introductionmentioning

confidence: 99%