Microbial hitchhikers on microplastics: The exchange of aquatic microbes across distinct aquatic habitats

IF 4.3 2区 生物学 Q2 MICROBIOLOGY Environmental microbiology Pub Date : 2024-04-01 DOI:10.1111/1462-2920.16618
Máté Vass, Kesava Priyan Ramasamy, Agneta Andersson
{"title":"Microbial hitchhikers on microplastics: The exchange of aquatic microbes across distinct aquatic habitats","authors":"Máté Vass,&nbsp;Kesava Priyan Ramasamy,&nbsp;Agneta Andersson","doi":"10.1111/1462-2920.16618","DOIUrl":null,"url":null,"abstract":"<p>Microplastics (MPs) have the potential to modify aquatic microbial communities and distribute microorganisms, including pathogens. This poses a potential risk to aquatic life and human health. Despite this, the fate of ‘hitchhiking’ microbes on MPs that traverse different aquatic habitats remains largely unknown. To address this, we conducted a 50-day microcosm experiment, manipulating estuarine conditions to study the exchange of bacteria and microeukaryotes between river, sea and plastisphere using a long-read metabarcoding approach. Our findings revealed a significant increase in bacteria on the plastisphere, including <i>Pseudomonas</i>, <i>Sphingomonas</i>, <i>Hyphomonas</i>, <i>Brevundimonas</i>, <i>Aquabacterium</i> and <i>Thalassolituus</i>, all of which are known for their pollutant degradation capabilities, specifically polycyclic aromatic hydrocarbons. We also observed a strong association of plastic-degrading fungi (i.e., <i>Cladosporium</i> and <i>Plectosphaerella</i>) and early-diverging fungi (Cryptomycota, also known as Rozellomycota) with the plastisphere. Sea MPs were primarily colonised by fungi (70%), with a small proportion of river-transported microbes (1%–4%). The mere presence of MPs in seawater increased the relative abundance of planktonic fungi from 2% to 25%, suggesting significant exchanges between planktonic and plastisphere communities. Using microbial source tracking, we discovered that MPs only dispersed 3.5% and 5.5% of river bacterial and microeukaryotic communities into the sea, respectively. Hence, although MPs select and facilitate the dispersal of ecologically significant microorganisms, drastic compositional changes across distinct aquatic habitats are unlikely.</p>","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16618","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental microbiology","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/1462-2920.16618","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MICROBIOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Microplastics (MPs) have the potential to modify aquatic microbial communities and distribute microorganisms, including pathogens. This poses a potential risk to aquatic life and human health. Despite this, the fate of ‘hitchhiking’ microbes on MPs that traverse different aquatic habitats remains largely unknown. To address this, we conducted a 50-day microcosm experiment, manipulating estuarine conditions to study the exchange of bacteria and microeukaryotes between river, sea and plastisphere using a long-read metabarcoding approach. Our findings revealed a significant increase in bacteria on the plastisphere, including Pseudomonas, Sphingomonas, Hyphomonas, Brevundimonas, Aquabacterium and Thalassolituus, all of which are known for their pollutant degradation capabilities, specifically polycyclic aromatic hydrocarbons. We also observed a strong association of plastic-degrading fungi (i.e., Cladosporium and Plectosphaerella) and early-diverging fungi (Cryptomycota, also known as Rozellomycota) with the plastisphere. Sea MPs were primarily colonised by fungi (70%), with a small proportion of river-transported microbes (1%–4%). The mere presence of MPs in seawater increased the relative abundance of planktonic fungi from 2% to 25%, suggesting significant exchanges between planktonic and plastisphere communities. Using microbial source tracking, we discovered that MPs only dispersed 3.5% and 5.5% of river bacterial and microeukaryotic communities into the sea, respectively. Hence, although MPs select and facilitate the dispersal of ecologically significant microorganisms, drastic compositional changes across distinct aquatic habitats are unlikely.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
微塑料上的微生物搭便车:水生微生物在不同水生栖息地之间的交换。
微塑料(MPs)有可能改变水生微生物群落并传播微生物,包括病原体。这对水生生物和人类健康构成了潜在风险。尽管如此,"搭便车 "的微生物在穿越不同水生栖息地的 MPs 上的命运在很大程度上仍然未知。为了解决这个问题,我们进行了一项为期 50 天的微观世界实验,利用长读数代谢编码方法,操纵河口条件,研究细菌和微真核细胞在河流、海洋和质体之间的交换。我们的研究结果表明,质体上的细菌数量显著增加,包括假单胞菌、鞘氨醇单胞菌、水单胞菌、Brevundimonas、水杆菌和Thalassolituus,所有这些细菌都以其污染物降解能力而闻名,特别是多环芳烃。我们还观察到降解塑料的真菌(即 Cladosporium 和 Plectosphaerella)和早期分化真菌(隐霉菌群,也称 Rozellomycota)与质球的紧密联系。海洋 MPs 主要由真菌(70%)定殖,小部分由河流传播的微生物(1%-4%)定殖。海水中MPs的存在使浮游真菌的相对丰度从2%增加到25%,这表明浮游群落和质体群落之间存在着重要的交流。通过微生物源追踪,我们发现 MPs 只分别将 3.5% 和 5.5% 的河流细菌群落和微真核细胞群落扩散到海洋中。因此,尽管多孔介质选择并促进了具有重要生态意义的微生物的扩散,但不同水生栖息地的微生物组成不太可能发生剧烈变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Environmental microbiology
Environmental microbiology 环境科学-微生物学
CiteScore
9.90
自引率
3.90%
发文量
427
审稿时长
2.3 months
期刊介绍: Environmental Microbiology provides a high profile vehicle for publication of the most innovative, original and rigorous research in the field. The scope of the Journal encompasses the diversity of current research on microbial processes in the environment, microbial communities, interactions and evolution and includes, but is not limited to, the following: the structure, activities and communal behaviour of microbial communities microbial community genetics and evolutionary processes microbial symbioses, microbial interactions and interactions with plants, animals and abiotic factors microbes in the tree of life, microbial diversification and evolution population biology and clonal structure microbial metabolic and structural diversity microbial physiology, growth and survival microbes and surfaces, adhesion and biofouling responses to environmental signals and stress factors modelling and theory development pollution microbiology extremophiles and life in extreme and unusual little-explored habitats element cycles and biogeochemical processes, primary and secondary production microbes in a changing world, microbially-influenced global changes evolution and diversity of archaeal and bacterial viruses new technological developments in microbial ecology and evolution, in particular for the study of activities of microbial communities, non-culturable microorganisms and emerging pathogens
期刊最新文献
Understanding the ecological versatility of Tetracladium species in temperate forest soils Issue Information Production and utilization of pseudocobalamin in marine Synechococcus cultures and communities Cable bacteria colonise new sediment environments through water column dispersal Novel oil-associated bacteria in Arctic seawater exposed to different nutrient biostimulation regimes
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1