Microplastics from biodegradable plastic bags alter soil properties and trigger stress response in sunflowers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0201438" target="_blank" >RIV/00216305:26210/26:0201438 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001659343900001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001659343900001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envpol.2025.127618" target="_blank" >10.1016/j.envpol.2025.127618</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microplastics from biodegradable plastic bags alter soil properties and trigger stress response in sunflowers

Popis výsledku v původním jazyce

The widespread replacement of conventional plastics with biodegradable alternatives raises questions about their long-term effects in agricultural soils. We investigated the impact of microplastics (MPs) cryo-milled from homecompostable (PBAT_HOME) and industrial-compostable (PBAT_IND) polybutylene adipate terephthalate bags and compared it to the toxicity of MPs from conventional polyethylene (PE) bags. Sunflowers (Helianthus annuus L.) were grown in pots with soil spiked with 0 %, 0.05 %, 0.5 %, and 1.0 % (w/w) MPs for eight weeks under a 16/8 day-night photoperiod at room temperature (22/18 degrees C). Plant responses differed notably between biodegradable and conventional MPs as revealed by two-way hierarchical clustering analysis: both PBAT_HOME and PBAT_IND significantly reduced shoot and root biomass at 0.5 % and 1 %, while PE had no effect. At higher PBAT concentrations, proline levels increased, consistent with activation of drought-like stress response pathways that merit confirmation with additional molecular biomarkers. Soil water holding capacity increased at 1 % of all three MPs, indicating a lower water availability for plants in the MP-spiked soil. pH was slightly increased at 1 % PBAT_HOME and significantly at 1 % PBAT_IND soil. Despite differences in particle size, polymer composition, and starch content, no single factor explained the observed effects, suggesting a combined influence. These results highlight that biodegradable MPs can alter soil properties and trigger physiological responses in plants, emphasizing the need to assess their ecological impacts, especially in agricultural systems where soil health and resilience are critical for crop production.

Název v anglickém jazyce

Microplastics from biodegradable plastic bags alter soil properties and trigger stress response in sunflowers

Popis výsledku anglicky

The widespread replacement of conventional plastics with biodegradable alternatives raises questions about their long-term effects in agricultural soils. We investigated the impact of microplastics (MPs) cryo-milled from homecompostable (PBAT_HOME) and industrial-compostable (PBAT_IND) polybutylene adipate terephthalate bags and compared it to the toxicity of MPs from conventional polyethylene (PE) bags. Sunflowers (Helianthus annuus L.) were grown in pots with soil spiked with 0 %, 0.05 %, 0.5 %, and 1.0 % (w/w) MPs for eight weeks under a 16/8 day-night photoperiod at room temperature (22/18 degrees C). Plant responses differed notably between biodegradable and conventional MPs as revealed by two-way hierarchical clustering analysis: both PBAT_HOME and PBAT_IND significantly reduced shoot and root biomass at 0.5 % and 1 %, while PE had no effect. At higher PBAT concentrations, proline levels increased, consistent with activation of drought-like stress response pathways that merit confirmation with additional molecular biomarkers. Soil water holding capacity increased at 1 % of all three MPs, indicating a lower water availability for plants in the MP-spiked soil. pH was slightly increased at 1 % PBAT_HOME and significantly at 1 % PBAT_IND soil. Despite differences in particle size, polymer composition, and starch content, no single factor explained the observed effects, suggesting a combined influence. These results highlight that biodegradable MPs can alter soil properties and trigger physiological responses in plants, emphasizing the need to assess their ecological impacts, especially in agricultural systems where soil health and resilience are critical for crop production.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2026

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Pollution

ISSN

0269-7491

e-ISSN

1873-6424

Svazek periodika

391

Číslo periodika v rámci svazku

127618

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

001659343900001

EID výsledku v databázi Scopus

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