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Impact of microplastics on microbial community structure in the Qiantang river: A potential source of N2O emissions.
Wang, Zeyu; Liu, Lingxiu; Zhou, Gang; Yu, Hui; Hrynsphan, Dzmitry; Tatsiana, Savitskaya; Robles-Iglesias, Raúl; Chen, Jun.
Afiliación
  • Wang Z; Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou, 310015, China.
  • Liu L; Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou, 310015, China; College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, 321004, China.
  • Zhou G; College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
  • Yu H; College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
  • Hrynsphan D; Research Institute of Physical and Chemical Problems, Belarusian State University, Minsk, 220030, Belarus.
  • Tatsiana S; Research Institute of Physical and Chemical Problems, Belarusian State University, Minsk, 220030, Belarus.
  • Robles-Iglesias R; Chemical Engineering Laboratory, Faculty of Sciences and Center for Advanced Scientific Research/Centro de Investigaciones Científicas Avanzadas (CICA), BIOENGIN Group, University of La Coruña, La Coruña, 15008, Spain.
  • Chen J; Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou, 310015, China. Electronic address: bec@zjut.edu.cn.
Environ Pollut ; 359: 124755, 2024 Oct 15.
Article en En | MEDLINE | ID: mdl-39151781
ABSTRACT
This study aimed to investigate the spatial distribution of microplastics (MPs) and the features of the bacterial community in the Qiantang River urban river. Surface water samples from the Qiantang River were analyzed for this purpose. The results of the 16S high-throughput sequencing indicated that the microbial community diversity of MPs was significantly lower than in natural water but higher than in natural substrates. The biofilm of MPs was mainly composed of Enterobacteriaceae (28.00%), Bacillaceae (16.25%), and Phormidiaceae (6.75%). The biodiversity on MPs, natural water, and natural substrates varied significantly and was influenced by seasonal factors. In addition, the presence of MPs hindered the denitrification process in the aquatic environment and intensified N2O emission when the nitrate concentration was higher than normal. In particular, polyethylene terephthalate (PET) exhibited a 12% residue of NO3--N and a 4.2% accumulation of N2O after a duration of 48 h. Further findings on gene abundance and cell viability provided further confirmation that PET had a considerable impact on reducing the expression of nirS (by 0.34-fold) and nosZ (by 0.53-fold), hence impeding the generation of nicotinamide adenine dinucleotide (NADH) (by 0.79-fold). Notably, all MPs demonstrated higher the nirK gene abundances than the nirS gene, which could account for the significant accumulation of N2O. The results suggest that MPs can serve as a novel carrier substrate for microbial communities and as a potential promoter of N2O emission in aquatic environments.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Ríos / Microplásticos País/Región como asunto: Asia Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Ríos / Microplásticos País/Región como asunto: Asia Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido