Abstract:
:In aquatic ecosystems, microplastics are a relatively new anthropogenic substrate that can readily be colonized by biofilm-forming organisms. To examine the effects of substrate type on microbial community assembly, we exposed ambient Baltic bacterioplankton to plastic substrates commonly found in marine environments (polyethylene, polypropylene and polystyrene) as well as native (cellulose) and inert (glass beads) particles for 2 weeks under controlled conditions. The source microbial communities and those of the biofilms were analyzed by Illumina sequencing of the 16S rRNA gene libraries. All biofilm communities displayed lower diversity and evenness compared with the source community, suggesting substrate-driven selection. Moreover, the plastics-associated communities were distinctly different from those on the non-plastic substrates. Whereas plastics hosted greater than twofold higher abundance of Burkholderiales, the non-plastic substrates had a significantly higher proportion of Actinobacteria and Cytophagia. Variation in the community structure, but not the cell abundance, across the treatments was strongly linked to the substrate hydrophobicity. Thus, microplastics host distinct bacterial communities, at least during early successional stages.
journal_name
Environ Microbioljournal_title
Environmental microbiologyauthors
Ogonowski M,Motiei A,Ininbergs K,Hell E,Gerdes Z,Udekwu KI,Bacsik Z,Gorokhova Edoi
10.1111/1462-2920.14120subject
Has Abstractpub_date
2018-08-01 00:00:00pages
2796-2808issue
8eissn
1462-2912issn
1462-2920journal_volume
20pub_type
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