Impacts of organophosphate pesticide types and concentrations on aquatic bacterial communities and carbon cycling.

Autor: Wu G; College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, PR China., Shi W; College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, PR China., Zheng L; College of Water Sciences, Beijing Normal University, Beijing 100875, PR China., Wang X; School of Environment, Tsinghua University, Beijing 100084, PR China., Tan Z; College of Horticulture and Forestry, Tarim University, Alar, China., Xie E; College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, PR China. Electronic address: xe@cau.edu.cn., Zhang D; College of New Energy and Environment, Jilin University, Changchun 130021, PR China; Key Laboratory of Groundwater Resources and Environment Ministry of Education, Jilin University, Changchun 130021, PR China. Electronic address: zhangdayi@tsinghua.org.cn.
Jazyk: angličtina
Zdroj: Journal of hazardous materials [J Hazard Mater] 2024 Aug 15; Vol. 475, pp. 134824. Date of Electronic Publication: 2024 Jun 04.
DOI: 10.1016/j.jhazmat.2024.134824
Abstrakt: Organophosphorus pesticides (OPPs) are important chemical stressors in aquatic ecosystems, and they attract increasing more attentions recently. However, the impacts of different OPPs on carbon cycling remain unclear, particularly for those functional-yet-uncultivable microbes. This study investigated the change in lake aquatic microbial communities in the presence of dichlorvos, monocrotophos, omethoate and parathion. All OPPs significantly inhibited biomass (p < 0.05) and the expression of carbon cycle-related cbbLG gene (p < 0.01), and altered aquatic microbial community structure, interaction, and assembly. Variance partitioning analysis showed a stronger impact of pesticide type on microbial biomass and community structure, where pesticide concentration played more significant roles in carbon cycling. From analysis of cbbLG gene and PICRUSt2, Luteolibacter and Verrucomicrobiaceae assimilated inorganic carbon through Wood-Ljungdahl pathway, whereas it was Calvin-Benson-Bassham cycle for Cyanobium PCC-6307. This work provides a deeper insight into the behavior and mechanisms of microbial community change in aquatic system in response to OPPs, and explicitly unravels the impacts of OPPs on their carbon-cycling functions.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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