Comparison of freshwater microbial communities in water and microplastics surfaces: insights from Dongting Lake, China

Yiming QIU; Xiaofeng WEN; Ziyi XIANG; Zixiang CHEN; Ziyi QIU; Meinan PENG; Shihan ZHONG; Jiali HUANG; Weicheng ZHOU; Lingshi YIN

doi:10.1007/s00343-025-4195-0

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Comparison of freshwater microbial communities in water and microplastics surfaces: insights from Dongting Lake, China

Biofilm on micro- and nano-plastics | Updated：2025-03-21

- Comparison of freshwater microbial communities in water and microplastics surfaces: insights from Dongting Lake, China
- Journal of Oceanology and Limnology Vol. 43, Issue 2, Pages: 545-558(2025)
- Affiliations：
  
  1.School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China
  2.Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, China
  3.Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China
  4.College of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha 410128, China
  5.School of Chemistry and Environmental Science, Xiangnan University, Chenzhou 423000, China
- Author bio：
  
  wenxf@csust.edu.cn
  yinls@hnu.edu.cn
- Funds：
- DOI：10.1007/s00343-025-4195-0
  CLC：
- Received：20 July 2024，
  
  Online First：06 December 2024，
  
  Published：01 March 2025
- Accepted：
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QIU Yiming,WEN Xiaofeng,XIANG Ziyi,et al.Comparison of freshwater microbial communities in water and microplastics surfaces: insights from Dongting Lake, China[J].Journal of Oceanology and Limnology,2025,43(02):545-558.
DOI：

QIU Yiming,WEN Xiaofeng,XIANG Ziyi,et al.Comparison of freshwater microbial communities in water and microplastics surfaces: insights from Dongting Lake, China[J].Journal of Oceanology and Limnology,2025,43(02):545-558. DOI： 10.1007/s00343-025-4195-0.

摘要

Abstract

In recent years

microplastics (MPs) in freshwater lake have been receiving increasing attention; however

the microbial communities on the surface of MPs have not been well studied. To investigate the potential risk posed by MPs to the lake ecosystem and its surface microbial community structure

MPs samples were collected in September 2023 in the freshwater Dongting Lake

Hunan

China

at five sites

and the differences in bacterial species community composition and structure between MPs and water samples were analyzed. Results show that MPs (13.71±3.32 items/L) in the samples were mostly black in color

fiber in shape

and PES in composition

and those

0.5 mm in size are dominant. The bacterial composition in water was different from that on MPs. At phylum level

Proteobacteria

Actinobacteria

Cyanobacteria

and Bacteroidetes were dominated in relative abundance in both water and MPs. Proteobacteria was more abundant in MPs than in water. The relative abundance of Bacteroidota and Actinobacteriota was significantly lower in MPs than in water. At genus level

Pantoea

and

Pseudomonas

were potentially pathogenic genera in MPs surfaces. The presence of Cyanobacteria and pathogenic bacteria is undoubtedly a potential risk to the deterioration of the water quality. This study revealed the difference in the distribution of bacterial community in water and MPs in Dongting

Lake and provided new perspectives to further understanding of MPs pollution in freshwater lakes.

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Keywords

references

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