Article (Scientific journals)
A closer look at plastic colonisation: Prokaryotic dynamics in established versus newly synthesised marine plastispheres and their planktonic state.
Messer, Lauren F; Wattiez, Ruddy; Matallana-Surget, Sabine
2024In Environmental Pollution, 358, p. 124479
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Keywords :
Community structure-function linkages; Comparative metaproteomics; Plastisphere formation; Colonisation; Community structure-function linkage; Community structures; Comparative metaproteomic; Inocula; Marinomonas; Prokaryotics; Pseudoalteromonas; Structure-function linkages; Toxicology; Pollution; Health, Toxicology and Mutagenesis
Abstract :
[en] The taxonomy of marine plastisphere communities has been extensively studied, demonstrating the ubiquity of hydrocarbonoclastic bacteria of potential biotechnological significance. However, prokaryotic functioning on plastic surfaces has received limited attention, and the question of whether these microorganisms are active and expressing specific molecular mechanisms underpinning plastisphere colonisation remains to be addressed. The aim of this study was to investigate the plastic colonisation process, to identify the active taxa involved in biofilm formation and the mechanisms used to initiate colonisation. To achieve this, a marine plastisphere characterised by active hydrocarbonoclastic genera was used as the inoculum for a short-term microcosm experiment using virgin low-density polyethylene as the sole carbon source. Following incubation for 1 and 2 weeks (representing early and late colonisation, respectively), a taxonomic and comparative metaproteomic approach revealed a significant shift in plastisphere diversity and composition, yet highlighted stability in the predominance of active Proteobacteria spanning 16 genera, including Marinomonas, Pseudomonas, and Pseudoalteromonas. Relative quantification of 1762 proteins shared between the initial plastisphere inoculum, the microcosm plastisphere and the planktonic cells in the surrounding artificial seawater, provided insights into the differential regulation of proteins associated with plastisphere formation. This included the upregulation of proteins mediating cellular attachment in the plastisphere, for example flagellin expressed by Marinomonas, Cobetia, Pseudoalteromonas, and Pseudomonas, and curli expressed by Cobetia. In addition to the differential regulation of energy metabolism in Marinomonas, Psychrobacter, Pseudomonas and Cobetia within the plastisphere relative to the surrounding seawater. Further, we identified the upregulation of amino acid metabolism and transport, including glutamine hydrolysis to glutamate in Marinomonas and unclassified Halomonadaceae, potentially coupled to ammonia availability and oxidative stress experienced within the plastisphere. Our study provides novel insights into the dynamics of plastisphere formation and function, highlighting potential targets for regulating plastisphere growth to enhance plastic bioremediation processes.
Disciplines :
Microbiology
Biochemistry, biophysics & molecular biology
Author, co-author :
Messer, Lauren F ;  Division of Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, FK9 4LA, United Kingdom. Electronic address: lauren.messer@stir.ac.uk
Wattiez, Ruddy  ;  Université de Mons - UMONS > Faculté des Sciences > Service de Protéomie et Microbiologie
Matallana-Surget, Sabine ;  Division of Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, FK9 4LA, United Kingdom. Electronic address: sabine.matallanasurget@stir.ac.uk
Language :
English
Title :
A closer look at plastic colonisation: Prokaryotic dynamics in established versus newly synthesised marine plastispheres and their planktonic state.
Publication date :
02 July 2024
Journal title :
Environmental Pollution
ISSN :
0269-7491
eISSN :
1873-6424
Publisher :
Elsevier Ltd, England
Volume :
358
Pages :
124479
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
Proteomics and Microbiology
Research institute :
R100 - Institut des Biosciences
Funding text :
This research was funded by the joint UKRI Natural Environment Research Council (NERC) and the National Research Foundation Singapore (NRF), project, \u201CSources impacts and solutions to plastics in South-East Asia coastal environments\u201D. L.F.M and S.M.-S were supported by the UKRI NERC/NRF project (NERC Award No. NE/V009621/1, NRF Award No. NRF-SEAP-2020-0001). The Bioprofiling platform used for proteomic analysis was supported by the European Regional Development Fund and the Walloon Region, Belgium.The authors would like to thank Dr Johannes Werner for the updated version of mPies, in addition to the High Performance and Cloud Computing Group at the Zentrum f\u00FCr Datenverarbeitung of the University of T\u00FCbingen and the Federal Ministry of Education and Research (BMBF) through grant no 031 A535A, for the use of de.NBI cloud for data analysis.\u2003The authors also acknowledge Dr. Sven-Ernoe Bikar of StarSEQ\u00AE GmbH platform, Germany, where the amplicon sequencing was performed.This research was funded by the joint UKRI Natural Environment Research Council (NERC) and the National Research Foundation Singapore (NRF), project, \u201CSources impacts and solutions to plastics in South-East Asia coastal environments\u201D. L.F.M and S.M.-S were supported by the UKRI NERC/NRF project (NERC Award No. NE/V009621/1, NRF Award No. NRF-SEAP-2020-0001). The Bioprofiling platform used for proteomic analysis was supported by the European Regional Development Fund and the Walloon Region, Belgium.The authors would like to thank Dr Johannes Werner for the updated version of mPies, in addition to the High Performance and Cloud Computing Group at the Zentrum f\u00FCr Datenverarbeitung of the University of T\u00FCbingen and the Federal Ministry of Education and Research (BMBF) through grant no 031 A535A, for the use of de.NBI cloud for data analysis. \u2003 The authors also acknowledge Dr. Sven-Ernoe Bikar of StarSEQ\u00AE GmbH platform, Germany, where the amplicon sequencing was performed.
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