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Farmland Microhabitat Mediated by a Residual Microplastic Film: Microbial Communities and Function

Farmland Microhabitat Mediated by a Residual Microplastic Film: Microbial Communities and Function

Zhenling Li ^1,2, Chenghong Feng ^1,3, Jinming Lei ³, Xiaokang He ³, Qixuan Wang ³, Yue Zhao ³, Yibin Qian ⁴, Xinmin Zhan ⁵, Zhenyao Shen ^1,3

Zhenling Li ^1,2, Chenghong Feng ^1,3, Jinming Lei ³

¹State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, P. R. China.
²The Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, P. R. China.
³The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, P. R. China.
⁴National Plot Zone for Ecological Conservation (Hainan) Research Center, Hainan Research Academy of Environmental Sciences, Haikou 571127, P. R. China.
⁵Civil Engineering, University of Galway, Galway H91 TK33, Ireland.

⁰State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, P. R. China.

Environmental Science & Technology +

|

February 6, 2024

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View abstract on PubMed

Summary

This summary is machine-generated.

Microplastic films in farmland create a unique plastisphere, altering microbial communities and increasing risks of nitrogen and sulfur loss. This research highlights the environmental impact of plastic residues on soil ecosystems.

Area Of Science

Environmental Microbiology
Soil Science
Ecotoxicology

Background

Microplastic films are prevalent in agricultural soils, forming a unique habitat known as the plastisphere.
The impact of the plastisphere on soil microbial structure, assembly, and biogeochemical cycling remains largely unknown.

Purpose Of The Study

To investigate the microbial community structure and function within the plastisphere compared to bulk soil.
To understand how microplastic films influence microbial assembly processes and biogeochemical cycling in farmlands.

Main Methods

Analysis of microbial communities using 16S rRNA and ITS amplicon sequencing.
Metagenome sequencing to assess functional gene abundance.
Sampling from 33 typical farmland sites.

Main Results

Distinct microbial communities and functions were observed in the plastisphere versus soil.
Microplastic films altered microbial symbiosis and assembly, with stochastic processes dominating bacterial and fungal communities in the plastisphere.
The plastisphere showed higher abundance of genes related to plastic degradation, denitrification, and sulfate reduction, indicating increased potential for nutrient loss.

Conclusions

Residual microplastic films create a unique plastisphere niche that significantly alters soil microbial ecology.
The plastisphere acts as a vector for pathogens and microbes involved in nitrogen and sulfur cycling, posing risks to soil health and increasing nutrient loss potential.

Keywords:

metagenome microorganisms pathogens plastisphere soil

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