PMID- 36272481 OWN - NLM STAT- MEDLINE DCOM- 20221202 LR - 20221202 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 858 IP - Pt 1 DP - 2023 Feb 1 TI - Early stage biofilm formation on bio-based microplastics in a freshwater reservoir. PG - 159569 LID - S0048-9697(22)06668-2 [pii] LID - 10.1016/j.scitotenv.2022.159569 [doi] AB - Bio-based plastics (BP) produced from renewable biomass resources, such as high-density polyethylene (HDPE), polylactic acid (PLA) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), is currently increasing in terms of both products and applications. However, their biodegradability and environmental fate are not yet fully understood, especially in freshwaters. Here, we present the results of an in-situ study in a freshwater reservoir, where we submerged HDPE, PLA and PHBV microscale BP (mBP) in dialysis bags to enable exchange of small organic and inorganic molecules, including nutrients, with the surrounding water. After one and two months, the bacterial biofilm that formed on each mBP was characterised by 16S rRNA amplicon sequencing. After two-months, Oxalobacteraceae, Pedosphaeraceae, Flavobacteriaceae (Flavobacterium) and Chitinophagaceae (Ferruginibacter) had increased by up to four times. Both these and other common members (>/=1 % relative total biomass) of the microbial community were similarly abundant on all mBP. Low-abundance (0.3-1 %) bacterial taxa, however, were significantly more diverse and differed on each mBP. Notably, some low-abundance families and genera increased on specific materials, e.g. Sphingomonadaceae on HDPE, Sphingobacteriaceae on PHBV, Gemmatimonas and Crenothrix on PLA. Overall, abundant bacteria were regarded as a pioneering community, while low-abundance bacteria were more diverse and preferred mBP types in the early stages of biofilm formation on mBP. It could be influenced by the environmental conditions, where nutrient levels and low temperatures might shape the low-abundance of attached bacterial communities than the plastic material itself. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Nguyen, Nhung H A AU - Nguyen NHA AD - Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Bendlova 1409/7, 461 17 Liberec, Czech Republic. Electronic address: nhung.nguyen@tul.cz. FAU - Marlita, Marlita AU - Marlita M AD - Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Bendlova 1409/7, 461 17 Liberec, Czech Republic; Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic. FAU - El-Temsah, Yehia S AU - El-Temsah YS AD - Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Bendlova 1409/7, 461 17 Liberec, Czech Republic; Centre for Biosafety, Postboks 6418, 9294 Tromso, Norway. FAU - Hrabak, Pavel AU - Hrabak P AD - Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Bendlova 1409/7, 461 17 Liberec, Czech Republic; Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic. FAU - Riha, Jakub AU - Riha J AD - Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Bendlova 1409/7, 461 17 Liberec, Czech Republic; Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic. FAU - Sevcu, Alena AU - Sevcu A AD - Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Bendlova 1409/7, 461 17 Liberec, Czech Republic; Faculty of Science, Humanities and Education, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic. Electronic address: alena.sevcu@tul.cz. LA - eng PT - Journal Article DEP - 20221020 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Microplastics) RN - 0 (Plastics) RN - 0 (RNA, Ribosomal, 16S) RN - 9002-88-4 (Polyethylene) RN - 0 (Polyesters) RN - 10237-77-1 (beta-hydroxyvaleric acid) SB - IM MH - Humans MH - *Microplastics MH - *Plastics MH - RNA, Ribosomal, 16S/genetics MH - Polyethylene MH - Renal Dialysis MH - Fresh Water MH - Biofilms MH - Bacteria MH - Polyesters OTO - NOTNLM OT - Abundant bacteria OT - HDPE OT - In-situ OT - Low-abundance bacteria OT - PHBV OT - PLA COIS- Declaration of competing interest The authors declare no financial competition or competing interests in relation to the work described. EDAT- 2022/10/23 06:00 MHDA- 2022/12/03 06:00 CRDT- 2022/10/22 19:23 PHST- 2022/09/02 00:00 [received] PHST- 2022/10/14 00:00 [revised] PHST- 2022/10/15 00:00 [accepted] PHST- 2022/10/23 06:00 [pubmed] PHST- 2022/12/03 06:00 [medline] PHST- 2022/10/22 19:23 [entrez] AID - S0048-9697(22)06668-2 [pii] AID - 10.1016/j.scitotenv.2022.159569 [doi] PST - ppublish SO - Sci Total Environ. 2023 Feb 1;858(Pt 1):159569. doi: 10.1016/j.scitotenv.2022.159569. Epub 2022 Oct 20.