PMID- 34787949 OWN - NLM STAT- MEDLINE DCOM- 20220223 LR - 20220223 IS - 1365-2672 (Electronic) IS - 1364-5072 (Linking) VI - 132 IP - 3 DP - 2022 Mar TI - Biochemical features and early adhesion of marine Candida parapsilosis strains on high-density polyethylene. PG - 1954-1966 LID - 10.1111/jam.15369 [doi] AB - AIMS: Plastic debris are constantly released into oceans where, due to weathering processes, they suffer fragmentation into micro- and nanoplastics. Diverse microbes often colonize these persisting fragments, contributing to their degradation. However, there are scarce reports regarding the biofilm formation of eukaryotic decomposing microorganisms on plastics. Here, we evaluated five yeast isolates from deep-sea sediment for catabolic properties and early adhesion ability on high-density polyethylene (HDPE). METHODS AND RESULTS: We assessed yeast catabolic features and adhesion ability on HDPE fragments subjected to abiotic weathering. Adhered cells were evaluated through Crystal Violet Assay, Scanning Electron Microscopy, Atomic Force Microscopy and Infrared Spectroscopy. Isolates were identified as Candida parapsilosis and exhibited wide catabolic capacity. Two isolates showed high adhesion ability on HDPE, consistently higher than the reference C. parapsilosis strain, despite an increase in fragment roughness due to weathering. Isolate Y5 displayed the most efficient colonization, with production of polysaccharides and lipids after 48 h of incubation. CONCLUSION: This work provides insights on catabolic metabolism and initial yeast-HDPE interactions of marine C. parapsilosis strains. SIGNIFICANCE AND IMPACT OF THE STUDY: Our findings represent an essential contribution to the characterization of early interactions between deep-sea undescribed yeast strains and plastic pollutants found in oceans. CI - (c) 2021 The Society for Applied Microbiology. FAU - Oliveira, Maiara Monteiro AU - Oliveira MM AUID- ORCID: 0000-0003-2574-9520 AD - Geobiology Laboratory, Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. AD - Immunology and Microbiology Laboratory, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. FAU - Proenca, Audrey Menegaz AU - Proenca AM AUID- ORCID: 0000-0002-3747-9719 AD - Geobiology Laboratory, Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. AD - Immunology and Microbiology Laboratory, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. FAU - Moreira-Silva, Eduardo AU - Moreira-Silva E AD - Immunology and Microbiology Laboratory, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. FAU - Dos Santos, Francine Melise AU - Dos Santos FM AD - Geobiology Laboratory, Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. FAU - Marconatto, Leticia AU - Marconatto L AD - Geobiology Laboratory, Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. FAU - de Castro, Aline Machado AU - de Castro AM AD - Biotechnology Division, Research and Development Center (CENPES), PETROBRAS, Rio de Janeiro, RJ, Brazil. FAU - Medina-Silva, Renata AU - Medina-Silva R AUID- ORCID: 0000-0002-5466-4908 AD - Geobiology Laboratory, Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. AD - Immunology and Microbiology Laboratory, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. LA - eng GR - master s scholarship/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/ GR - master s scholarship (code 001)/Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior/ GR - 0050.0096017.15.9/PETROBRAS/ PT - Journal Article DEP - 20211130 PL - England TA - J Appl Microbiol JT - Journal of applied microbiology JID - 9706280 RN - 9002-88-4 (Polyethylene) SB - IM MH - Biofilms MH - *Candida parapsilosis/genetics/metabolism MH - Microscopy, Electron, Scanning MH - *Polyethylene/chemistry OTO - NOTNLM OT - biofilms OT - degradation OT - diversity OT - metabolism OT - yeasts EDAT- 2021/11/18 06:00 MHDA- 2022/02/24 06:00 CRDT- 2021/11/17 12:38 PHST- 2021/09/29 00:00 [revised] PHST- 2021/05/08 00:00 [received] PHST- 2021/10/14 00:00 [accepted] PHST- 2021/11/18 06:00 [pubmed] PHST- 2022/02/24 06:00 [medline] PHST- 2021/11/17 12:38 [entrez] AID - 10.1111/jam.15369 [doi] PST - ppublish SO - J Appl Microbiol. 2022 Mar;132(3):1954-1966. doi: 10.1111/jam.15369. Epub 2021 Nov 30.