Back to papers
0
Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Human Health Effects Marine & Wildlife Remediation Reproductive & Development Sign in to save

Effect of biodegradable and conventional microplastic exposure in combination with seawater inundation on the coastal terrestrial plant Plantago coronopus

Environmental Pollution 2024 6 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Mick E. Hanley, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Winnie Courtene‐Jones, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson S.W.H. Cheung, Winnie Courtene‐Jones, S.W.H. Cheung, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Winnie Courtene‐Jones, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Mick E. Hanley, Mick E. Hanley, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Winnie Courtene‐Jones, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson

Summary

Researchers tested how conventional and biodegradable microplastics, combined with seawater flooding, affect the coastal plant Plantago coronopus. They found that both types of microplastics altered plant growth and soil conditions, with effects compounded by saltwater exposure. The study suggests that coastal ecosystems face interacting threats from plastic pollution and rising sea levels that may be more harmful together than either stressor alone.

Polymers
PE PET
Body Systems
Reproductive
Study Type Environmental

Coastal ecosystems face a multitude of pressures including plastic pollution and increased flood risk due to sea level rise and the frequency and severity of storms. Experiments seldom examine multiple stressors such as these, but here we quantified the effect of microplastics (polyethylene terephthalate (PET): a durable plastic and polybutylene adipate terephthalate (PBAT): a biodegradable polymer), in combination with simulated seawater inundation on the coastal species Plantago coronopus. After 35-days exposure to plastic (0.02 g.Kg<sup>-1</sup>, <300 μm diameter), P. coronopus were flooded to pot height with artificial seawater for 72-h, drained and grown for a further 24-days. Plant mortality, necrosis and photosynthetic efficiency (F<sub>v</sub>/F<sub>m</sub>) were recorded throughout, with root:shoot biomass and scape production (flower stalks) quantified at harvest. There were significant interactions between microplastics and seawater on the root:shoot ratio; a measure of resource allocation. The allocation to belowground biomass increased significantly under the PET + inundation treatment compared to the PBAT + inundation and the no plastic + inundation treatments, with potential consequences on the capture of water, nutrients and sunlight, which can affect plant performance. Plant necrosis significantly increased, and F<sub>v</sub>/F<sub>m</sub> declined as a result of seawater inundation. While not significant, plant F<sub>v</sub>/F<sub>m</sub> responses were influenced by microplastics (17% and 7% reduction in PBAT and PET exposure respectively compared to the no plastic control). Plants mediated this stress response with no discernible treatment-specific effects detected in F<sub>v</sub>/F<sub>m</sub> 14-days after seawater introduction. Plastic exposure significantly influenced potential reproductive output, with lower average scape numbers across PBAT treatments, but higher in PET treatments. This study highlights the complex interactions and potential for microplastics to present an elevated risk when in combination with additional stressors like seawater flooding; establishing the threat presented to ecosystem resilience in a changing world is a priority.

Read via DOI PubMed Download PDF

Sign in to start a discussion.

Share this paper

Post Share Share Pin Email