Article (Scientific journals)
Proteomic and morphological insights into the exposure of Cupriavidus metallidurans CH34 planktonic cells and biofilms to aluminium.
Abdeljelil, Nissem; Ben Miloud Yahia, Najla; Landoulsi, Ahmed et al.
2024In Journal of Hazardous Materials, 465, p. 133403
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Keywords :
Aluminium; Bacteria; Metal resistance; Proteomics; Aluminum; Metals; Bacterial Proteins; Metals/metabolism; Bacterial Proteins/metabolism; Cupriavidus/metabolism; Biological functions; Biological pathways; Cupriavidus metallidurans; Domestic use; Industrial use; Metal cans; Metal resistances; Microbial life; Planktonic-cells; Cupriavidus; Environmental Engineering; Environmental Chemistry; Waste Management and Disposal; Pollution; Health, Toxicology and Mutagenesis
Abstract :
[en] Aluminium (Al) is one of the most popular materials for industrial and domestic use. Nevertheless, research has proven that this metal can be toxic to most organisms. This light metal has no known biological function and to date very few aluminium-specific biological pathways have been identified. In addition, information about the impact of this metal on microbial life is scarce. Here, we aimed to study the effect of aluminium on the metal-resistant soil bacterium Cupriavidus metallidurans CH34 in different growth modes, i.e. planktonic cells, adhered cells and mature biofilms. Our results indicated that despite a significant tolerance to aluminium (minimal inhibitory concentration of 6.25 mM Al₂(SO₄)₃.18H₂O), the exposure of C. metallidurans to a sub-inhibitory dose (0.78 mM) caused early oxidative stress and an increase in hydrolytic activity. Changes in the outer membrane surface of planktonic cells were observed, in addition to a rapid disruption of mature biofilms. On protein level, aluminium exposure increased the expression of proteins involved in metabolic activity such as pyruvate kinase, formate dehydrogenase and poly(3-hydroxybutyrate) polymerase, whereas proteins involved in chemotaxis, and the production and transport of iron scavenging siderophores were significantly downregulated.
Disciplines :
Microbiology
Author, co-author :
Abdeljelil, Nissem ;  Université de Mons - UMONS > Faculté des Sciences > Service de Protéomie et Microbiologie
Ben Miloud Yahia, Najla;  National Center for Nuclear Sciences and Technologies, Sidi Thabet, Tunisia
Landoulsi, Ahmed;  Laboratory of Biochemistry and Molecular Biology, Faculty of Sciences of Bizerte, University of Carthage, Jarzouna, Tunisia
Chatti, Abdelwaheb;  Laboratory of Biochemistry and Molecular Biology, Faculty of Sciences of Bizerte, University of Carthage, Jarzouna, Tunisia
Wattiez, Ruddy  ;  Université de Mons - UMONS > Faculté des Sciences > Service de Protéomie et Microbiologie
Gillan, David ;  Université de Mons - UMONS > Faculté des Sciences > Service de Protéomie et Microbiologie
Van Houdt, Rob;  Microbiology Unit, Belgian Nuclear Research Centre, SCK CEN, Mol, Belgium. Electronic address: rvhoudto@sckcen.be
Language :
English
Title :
Proteomic and morphological insights into the exposure of Cupriavidus metallidurans CH34 planktonic cells and biofilms to aluminium.
Publication date :
05 March 2024
Journal title :
Journal of Hazardous Materials
ISSN :
0304-3894
eISSN :
1873-3336
Publisher :
Elsevier B.V., Netherlands
Volume :
465
Pages :
133403
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
Proteomics and Microbiology
Research institute :
R100 - Institut des Biosciences
Funding text :
This work was supported by the Fund for Collective Fundamental Research ( FRFC ) grant to D.C.G ( CDR J.0071.21 ), the European Space Agency ( ESA-PRODEX ) and the Belgian Science Policy (Belspo) through the BIOFILMS project ( C4000129318 , C4000137308 ), and the Tunisian Ministry of Higher Education and Scientific Research .
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since 29 June 2024

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