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Dysbiosis of gut microbiota by actual long-term exposure to textile wastewater treatment plant effluents in adult zebrafish (Danio rerio) using aquatic microcosm systems

文献类型： 外文期刊

作者： Wang, Chun 1 ; Li, Ruixuan 1 ; Li, Shuangshuang 2 ; Yi, Mengmeng 3 ; Li, Jinjin 4 ; Sun, Yingxue 1 ; Ni, Jiajia 5 ;

作者机构： 1.Beijing Technol & Business Univ, Sch Ecol & Environm, State Environm Protect Key Lab Food Chain Pollut C, Beijing 100048, Peoples R China

2.Hebei Univ Engn, Coll Energy & Environm Engn, Handan 056038, Peoples R China

3.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resources Applicat, Minist Agr & Rural Affairs, Guangzhou 510380, Peoples R China

4.Qilu Normal Univ, Sch Life Sci, Jinan 250200, Peoples R China

5.Guangdong Meilikang Biosci Ltd, Res & Dev Ctr, Dongguan 523808, Peoples R China

关键词： Textile effluent; Gut microbiota; Zebrafish; Chronic toxicity; Aquatic microcosm systems

期刊名称：JOURNAL OF WATER PROCESS ENGINEERING （ 影响因子：7.0； 五年影响因子：6.7 ）

ISSN： 2214-7144

年卷期： 2023 年 54 卷

页码：

收录情况： SCI

摘要： In the future, textile industry wastewater may create greater possibilities of releasing emerging contaminants into aquatic environments. Research on textile dyeing wastewater has focused on its adverse effects on biota. However, the effects of textile wastewater on gut microbiome and host health have not yet been elucidated, especially for the toxic assessment of combined pollutants under receiving water environment conditions. During this study, adult zebrafish were exposed to realistic textile wastewater treatment plant (TWTP) effluents in aquatic microcosm systems (AMS) for six months, a histopathological examination was performed, after which 16S rRNA and metagenomic sequencing of the intestinal microbiota was conducted and fish growth performance was also examined. As a result of exposure to TWTP effluents, adult zebrafish growth was significantly inhibited, the condition factor was exacerbated, and mortality was significantly increased. Also, significant alterations were observed in zebrafish guts after chronic exposure, which are the opportunistic pathogens Flavobacterium, Aeromonas, and Escherichia. The chronic effects of increased probiotic Cetobacterium, Bacteroides, and Planctomyces deserve further attention. Metagenomic sequencing also showed that genes of core metabolism pathways were affected by TWTP effluent exposure. The study has, for the first time, demonstrated gut microbiota's susceptibility and host health of adult zebrafish to TWTP effluents using aquatic microcosm systems, which are assumed to be clean, thus warranting additional research to reveal their mode of toxicity.

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