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Jean N, Perié L, Dumont E, Bertheau L, Balliau T, Caruana AMN, Amzil Z, Laabir M, Masseret E. Metal stresses modify soluble proteomes and toxin profiles in two Mediterranean strains of the distributed dinoflagellate Alexandrium pacificum. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 818:151680. [PMID: 34793790 DOI: 10.1016/j.scitotenv.2021.151680] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/25/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
HABs involving Alexandrium pacificum have been reported in metal-contaminated ecosystems, suggesting that this distributed species adapts to and/or can tolerate the effects of metals. Modifications in soluble proteomes and PST contents were characterized in two Mediterranean A. pacificum strains exposed to mono- or polymetallic stresses (zinc, lead, copper, cadmium). These strains were isolated from two anthropized locations: Santa Giusta Lagoon (Italy, SG C10-3) and the Tarragona seaport (Spain, TAR C5-4F). In both strains, metals primarily downregulated key photosynthesis proteins. Metals also upregulated other proteins involved in photosynthesis (PCP in both strains), the oxidative stress response (HSP 60, proteasome and SOD in SG C10-3; HSP 70 in TAR C5-4F), energy metabolism (AdK in TAR C5-4F), neoglucogenesis/glycolysis (GAPDH and PEP synthase in SG C10-3) and protein modification (PP in TAR C5-4F). These proteins, possibly involved in adaptive proteomic responses, may explain the development of these A. pacificum strains in metal-contaminated ecosystems. The two strains showed different proteomic responses to metals, with SG C10-3 upregulating more proteins, particularly PCP. Among the PSTs, regardless of the metal and the strain studied, C2 and GTX4 predominated, followed by GTX5. Under the polymetallic cocktail, (i) total PSTs, C2 and GTX4 reached the highest levels in SG C10-3 only, and (ii) total PSTs, C2, GTX5 and neoSTX were higher in SG C10-3 than in TAR C5-4F, whereas in SG C10-3 under copper stress, total PSTs, GTX5, GTX1 and C1 were higher than in the controls, revealing variability in PST biosynthesis between the two strains. Total PSTs, C2, GTX4 and GTX1 showed significant positive correlations with PCP, indicating that PST production may be positively related to photosynthesis. Our results showed that the A. pacificum strains adapt their proteomic and physiological responses to metals, which may contribute to their ecological success in highly anthropized areas.
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Affiliation(s)
- Natacha Jean
- Université de Toulon, Aix Marseille Univ, CNRS, IRD, MIO, Toulon, France.
| | - Luce Perié
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University, 30(th) St., New York, NY 10016, USA
| | - Estelle Dumont
- UMR_MD1, Aix-Marseille Univ, U-1261-INSERM, SSA, IRBA, MCT, Marseille, France
| | - Lucie Bertheau
- UMR PAM A 02.102 Procédés Alimentaires et Microbiologiques, Université de Bourgogne Franche-Comté, AgroSup Dijon, esplanade Erasme, 21 000 Dijon, France
| | - Thierry Balliau
- PAPPSO-GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91 190 Gif-sur-Yvette, France
| | - Amandine M N Caruana
- IFREMER, Phycotoxin Laboratory, rue de l'île d'Yeu, BP 21105, 44 311 Nantes, France
| | - Zouher Amzil
- IFREMER, Phycotoxin Laboratory, rue de l'île d'Yeu, BP 21105, 44 311 Nantes, France
| | - Mohamed Laabir
- Marbec, Univ Montpellier, IRD, Ifremer, CNRS, Montpellier, France
| | - Estelle Masseret
- Marbec, Univ Montpellier, IRD, Ifremer, CNRS, Montpellier, France
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Coclet C, Garnier C, D’Onofrio S, Durrieu G, Pasero E, Le Poupon C, Omanović D, Mullot JU, Misson B, Briand JF. Trace Metal Contamination Impacts Predicted Functions More Than Structure of Marine Prokaryotic Biofilm Communities in an Anthropized Coastal Area. Front Microbiol 2021; 12:589948. [PMID: 33679628 PMCID: PMC7933014 DOI: 10.3389/fmicb.2021.589948] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 01/29/2021] [Indexed: 12/25/2022] Open
Abstract
Trace metal (TM) contamination in marine coastal areas is a worldwide threat for aquatic communities. However, little is known about the influence of a multi-chemical contamination on both marine biofilm communities' structure and functioning. To determine how TM contamination potentially impacted microbial biofilms' structure and their functions, polycarbonate (PC) plates were immerged in both surface and bottom of the seawater column, at five sites, along strong TM contamination gradients, in Toulon Bay. The PC plates were incubated during 4 weeks to enable colonization by biofilm-forming microorganisms on artificial surfaces. Biofilms from the PC plates, as well as surrounding seawaters, were collected and analyzed by 16S rRNA amplicon gene sequencing to describe prokaryotic community diversity, structure and functions, and to determine the relationships between bacterioplankton and biofilm communities. Our results showed that prokaryotic biofilm structure was not significantly affected by the measured environmental variables, while the functional profiles of biofilms were significantly impacted by Cu, Mn, Zn, and salinity. Biofilms from the contaminated sites were dominated by tolerant taxa to contaminants and specialized hydrocarbon-degrading microorganisms. Functions related to major xenobiotics biodegradation and metabolism, such as methane metabolism, degradation of aromatic compounds, and benzoate degradation, as well as functions involved in quorum sensing signaling, extracellular polymeric substances (EPS) matrix, and biofilm formation were significantly over-represented in the contaminated site relative to the uncontaminated one. Taken together, our results suggest that biofilms may be able to survive to strong multi-chemical contamination because of the presence of tolerant taxa in biofilms, as well as the functional responses of biofilm communities. Moreover, biofilm communities exhibited significant variations of structure and functional profiles along the seawater column, potentially explained by the contribution of taxa from surrounding sediments. Finally, we found that both structure and functions were significantly distinct between the biofilm and bacterioplankton, highlighting major differences between the both lifestyles, and the divergence of their responses facing to a multi-chemical contamination.
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Affiliation(s)
- Clément Coclet
- Université de Toulon, Laboratoire MAPIEM, EA 4323, Toulon, France
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography, UM110, La Garde, France
| | - Cédric Garnier
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography, UM110, La Garde, France
| | - Sébastien D’Onofrio
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography, UM110, La Garde, France
| | - Gaël Durrieu
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography, UM110, La Garde, France
| | - Emilie Pasero
- Microbia Environnement Observatoire Océanologique, Banyuls-sur-Mer, France
| | - Christophe Le Poupon
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography, UM110, La Garde, France
| | - Dario Omanović
- Division for Marine and Environmental Research, Ruðer Bošković Institute, Zagreb, Croatia
| | | | - Benjamin Misson
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography, UM110, La Garde, France
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Coclet C, Garnier C, Durrieu G, D'onofrio S, Layglon N, Briand JF, Misson B. Impacts of copper and lead exposure on prokaryotic communities from contaminated contrasted coastal seawaters: the influence of previous metal exposure. FEMS Microbiol Ecol 2020; 96:5809961. [PMID: 32188980 DOI: 10.1093/femsec/fiaa048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 03/17/2020] [Indexed: 01/04/2023] Open
Abstract
Our understanding of environmental factors controlling prokaryotic community is largely hampered by the large environmental variability across spatial scales (e.g. trace metal contamination, nutrient enrichment and physicochemical variations) and the broad diversity of bacterial pre-exposure to environmental factors. In this article, we investigated the specific influence of copper (Cu) and lead (Pb) on prokaryotic communities from the uncontaminated site, using mesocosm experiments. In addition, we studied how pre-exposure (i.e. life history) affects communities, with reference to previous metal exposure on the response of three prokaryotic communities to similar Cu exposition. This study showed a stronger influence of Cu contamination than Pb contamination on prokaryotic diversity and structure. We identified 12 and 34 bacterial families and genera, respectively, contributing to the significant differences observed in community structure between control and spiked conditions. Taken altogether, our results point toward a combination of direct negative responses to Cu contamination and indirect responses mediated by interaction with phytoplankton. These identified responses were largely conditioned by the previous exposure of community to contaminants.
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Affiliation(s)
- Clément Coclet
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 83041 Toulon, Cedex 9, Franc.,Université de Toulon, MAPIEM, EA 4323, Toulon, 83041 Toulon, Cedex 9, Franc
| | - Cédric Garnier
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 83041 Toulon, Cedex 9, Franc
| | - Gaël Durrieu
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 83041 Toulon, Cedex 9, Franc
| | - Sébastien D'onofrio
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 83041 Toulon, Cedex 9, Franc
| | - Nicolas Layglon
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 83041 Toulon, Cedex 9, Franc
| | | | - Benjamin Misson
- Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 83041 Toulon, Cedex 9, Franc
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Chetouhi C, Masseret E, Satta CT, Balliau T, Laabir M, Jean N. Intraspecific variability in membrane proteome, cell growth, and morphometry of the invasive marine neurotoxic dinoflagellate Alexandrium pacificum grown in metal-contaminated conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 715:136834. [PMID: 32014766 DOI: 10.1016/j.scitotenv.2020.136834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/03/2020] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
Over the past decades, the occurrence, distribution and intensity of harmful algal blooms involving the dinoflagellate Alexandrium pacificum have increased in marine coastal areas disturbed by anthropogenic inputs. This invasive species produces saxitoxin, which causes the paralytic shellfish poisoning syndrome in humans upon consumption of contaminated seafood. Blooms of A. pacificum have been reported in metal-contaminated coastal ecosystems, suggesting some ability of these microorganisms to adapt to and/or resist in metal stress conditions. This study seeks to characterize the modifications in membrane proteomes (by 2-D electrophoresis coupled to LC-MS/MS), cell growth and morphometry (measured with an inverted microscope), in response to metal stress (addition of Zn2+, Pb2+, Cu2+ and Cd2+), in two Mediterranean A. pacificum strains: SG C10-3 and TAR C5-4F, respectively isolated from the Santa Giusta Lagoon (Sardinia, Italy) and from the Tarragona seaport (Spain), both metal-contaminated ecosystems. In the SG C10-3 cultures grown in a metal cocktail, cell growth was significantly delayed, and cell size increased (22% of 37.5 μm cells after 25 days of growth). Conversely, no substantial change was observed for cell growth or cell size in the TAR C5-4F cultures grown in a metal cocktail (P > 0.10), thus indicating intraspecific variability in the responses of A. pacificum strains to metal contamination. Regardless of the conditions tested, the total number of proteins constituting the membrane proteome was significantly higher for TAR C5-4F than for SG C10-3, which may help TAR C5-4F to thrive better in contaminated conditions. For both strains, the total number of proteins constituting the membrane proteomes was significantly lower in response to metal stress (29% decrease in the SG C10-3 proteome: 82 ± 12 proteins for controls, and 58 ± 12 in metal-contaminated cultures; 17% decrease in the TAR C5-4F proteome: 101 ± 8 proteins for controls, and 84 ± 5 in metal-contaminated cultures). Moreover, regardless of the strain, proteins with significantly modified expression in response to stress were mainly down-regulated (representing 45% of the proteome for SG C10-3 and 38% for TAR C5-4F), clearly showing the harmful effects of the metals. Protein down-regulation may affect cell transport (actin and phospholipid scramblase in SG C10-3), photosynthesis (RUBISCO in SG C10-3, light-harvesting protein in TAR C5-4F, and high-CO2-inducing periplasmic protein in both strains), and finally energy metabolism (ATP synthase in both strains). However, other modifications in protein expression may confer to these A. pacificum strains a capacity for adaptation and/or resistance to metal stress conditions, for example by (i) limiting the metal entry through the plasma membrane of the SG C10-3 cells (via the down-regulation of scramblase) and/or (ii) reducing the oxidative stress generated by metals in SG C10-3 and TAR C5-4F cells (due to down-regulation of ATP-synthase).
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Affiliation(s)
- Cherif Chetouhi
- Mediterranean Institute of Oceanography, Equipe Microbiologie Environnementale et Biotechnologie, UM 110 CNRS/IRD Aix-Marseille Université, Université de Toulon, CS 60584, 83 041 Toulon Cedex 9, France
| | - Estelle Masseret
- Marbec, University of Montpellier, IRD, Ifremer, CNRS, 34 095 Montpellier Cedex 5, France
| | - Cecilia Teodora Satta
- University of Sassari, via Piandanna 4, Agenzia Regionale per la Ricerca in Agricoltura, Loc. Bonassai, Olmedo, 07 100 Sassari, Italy
| | - Thierry Balliau
- PAPPSO-GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91 190 Gif-sur-Yvette, France
| | - Mohamed Laabir
- Marbec, University of Montpellier, IRD, Ifremer, CNRS, 34 095 Montpellier Cedex 5, France
| | - Natacha Jean
- Mediterranean Institute of Oceanography, Equipe Microbiologie Environnementale et Biotechnologie, UM 110 CNRS/IRD Aix-Marseille Université, Université de Toulon, CS 60584, 83 041 Toulon Cedex 9, France.
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Dang DH, Evans RD, Durrieu G, Layglon N, El Houssainy A, Mullot JU, Lenoble V, Mounier S, Garnier C. Quantitative model of carbon and nitrogen isotope composition to highlight phosphorus cycling and sources in coastal sediments (Toulon Bay, France). CHEMOSPHERE 2018; 195:683-692. [PMID: 29289013 DOI: 10.1016/j.chemosphere.2017.12.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 12/11/2017] [Accepted: 12/18/2017] [Indexed: 06/07/2023]
Abstract
Nutrient loadings from either point or non-point sources to the environment are related to the growing global population. Subsequent negative impacts of nutrient loading to aquatic environments requires a better understanding of the biogeochemical cycling and better tools to track their sources. This study examines the carbon (C), nitrogen (N) and phosphorus (P) discharge and cycling in a Mediterranean coastal area from rivers to marine sediments and assesses the anthropogenic contributions. Carbon and N concentrations and isotope compositions in rivers particles, surface sediments, and sediment cores were investigated to build up a quantitative multiple-end-member mixing model for C and N isotopes. This model predicts the contribution of four natural and one anthropogenic sources to the sediments and highlighted the anthropogenic fraction of P based on the relationship with anthropogenic δ15N. Although P is a monoisotopic element and total P concentration has been the sole index to study P loading, this study suggests an alternative approach to differentiate anthropogenic and non-anthropogenic (diagenetic) P, revealed point and non-point sources of P, and the corresponding P loading. Also, the diagenetic P background has been calculated for the 50-cm sediment layer of the whole Bay.
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Affiliation(s)
- Duc Huy Dang
- School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, K9L 0G2, ON, Canada; Université de Toulon, PROTEE, EA 3819, CS60584, 83041, Toulon Cedex 9, France.
| | - R Douglas Evans
- School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, K9L 0G2, ON, Canada; Water Quality Centre, Trent University, 1600 West Bank Drive, Peterborough, K9L 0G2, ON, Canada
| | - Gael Durrieu
- Université de Toulon, PROTEE, EA 3819, CS60584, 83041, Toulon Cedex 9, France; Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UMR7294, 83041, Toulon Cedex 9, France
| | - Nicolas Layglon
- Université de Toulon, PROTEE, EA 3819, CS60584, 83041, Toulon Cedex 9, France; Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UMR7294, 83041, Toulon Cedex 9, France
| | - Amonda El Houssainy
- Université de Toulon, PROTEE, EA 3819, CS60584, 83041, Toulon Cedex 9, France; Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UMR7294, 83041, Toulon Cedex 9, France; Centre National des Sciences Marines, CNRSL, Batroun, PO Box 534, Lebanon
| | | | - Véronique Lenoble
- Université de Toulon, PROTEE, EA 3819, CS60584, 83041, Toulon Cedex 9, France; Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UMR7294, 83041, Toulon Cedex 9, France
| | - Stéphane Mounier
- Université de Toulon, PROTEE, EA 3819, CS60584, 83041, Toulon Cedex 9, France; Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UMR7294, 83041, Toulon Cedex 9, France
| | - Cédric Garnier
- Université de Toulon, PROTEE, EA 3819, CS60584, 83041, Toulon Cedex 9, France; Université de Toulon, Aix Marseille Université, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UMR7294, 83041, Toulon Cedex 9, France
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Bouchoucha M, Brach-Papa C, Gonzalez JL, Lenfant P, Darnaude AM. Growth, condition and metal concentration in juveniles of two Diplodus species in ports. MARINE POLLUTION BULLETIN 2018; 126:31-42. [PMID: 29421103 DOI: 10.1016/j.marpolbul.2017.10.086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 10/02/2017] [Accepted: 10/30/2017] [Indexed: 06/08/2023]
Abstract
High abundances of juvenile fish in certain ports suggest they might provide alternative nursery habitats for several species. To further investigate this possibility, post-settlement growth, metal uptake and body condition were estimated in 127 juveniles of two seabream species, collected in 2014-15, inside and outside the highly polluted ports of the Bay of Toulon. This showed that differences in local pollution levels (here in Hg, Cu, Pb and Zn) are not consistently mirrored within fish flesh. Muscle metal concentrations, below sanitary thresholds for both species, were higher in ports for Cu, Pb and V only. Otherwise, fish muscle composition principally differed by species or by year. Juvenile growth and condition were equivalent at all sites. Higher prey abundance in certain ports might therefore compensate the deleterious effects of pollution, resulting in similar sizes and body conditions for departing juvenile fish than in nearby natural habitats.
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Affiliation(s)
- M Bouchoucha
- Lab. Environnement Ressources Provence Azur Corse, Centre Ifremer de Méditerranée ZP de Brégaillon, CS 20330, 83507 La Seyne-sur-Mer, France; Univ. Perpignan Via Domitia, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, 58 Avenue Paul Alduy, F-66860 Perpignan, France; CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, 58 Avenue Paul Alduy, F-66860 Perpignan, France; UMR MARBEC 9190 CNRS-UM-IRD-Ifremer, CC093, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier, France.
| | - C Brach-Papa
- Lab. Environnement Ressources Provence Azur Corse, Centre Ifremer de Méditerranée ZP de Brégaillon, CS 20330, 83507 La Seyne-sur-Mer, France
| | - J-L Gonzalez
- Lab. Biogéochimie des Contaminants Métalliques, Centre Ifremer de Méditerranée ZP de Brégaillon, CS 20330, 83507 La Seyne-sur-Mer, France
| | - P Lenfant
- Univ. Perpignan Via Domitia, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, 58 Avenue Paul Alduy, F-66860 Perpignan, France; CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, 58 Avenue Paul Alduy, F-66860 Perpignan, France
| | - A M Darnaude
- UMR MARBEC 9190 CNRS-UM-IRD-Ifremer, CC093, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier, France
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Jean N, Dumont E, Herzi F, Balliau T, Laabir M, Masseret E, Mounier S. Modifications of the soluble proteome of a mediterranean strain of the invasive neurotoxic dinoflagellate Alexandrium catenella under metal stress conditions. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 188:80-91. [PMID: 28472730 DOI: 10.1016/j.aquatox.2017.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 04/06/2017] [Accepted: 04/15/2017] [Indexed: 06/07/2023]
Abstract
The soluble proteome of the mediterranean strain ACT03 of the invasive neurotoxic dinoflagellate Alexandrium catenella exposed to lead or zinc at 6, 12 or 18μM (total concentrations), or under control conditions, was characterized by two-dimensional gel electrophoresis (2-DE). Zinc reduced (P<0.05) the total number of protein spots (-41%, -52% and -60%, at 6, 12 or 18μM, respectively). Besides, most of the proteins constituting the soluble proteome were down-regulated in response to lead or zinc stresses. These proteins were involved mainly in photosynthesis (20-37% for lead; 36-50% for zinc) (ribulose-1,5-bisphosphate carboxylase/oxygenase: RUBISCO; ferredoxin-NADP+ reductase: FNR; peridinin-chlorophyll a-protein: PCP), and in the oxidative stress response (29-34% for lead; 17-36% for zinc) (superoxide dismutase: SOD; proteasome α/β subunits). These negative effects could be partly compensated by the up-regulation of specific proteins such as ATP-synthase β subunit (+16.3 fold after exposure to lead at 12μM). Indeed, an increase in the abundance of ATP-synthase could enrich the ATP pool and provide more energy available for the cells to survive under metal stress, and make the ATP-synthase transport of metal cations out of the cells more efficient. Finally, this study shows that exposure to lead or zinc have a harmful effect on the soluble proteome of A. catenella ACT03, but also suggests the existence of an adaptative proteomic response to metal stresses, which could contribute to maintaining the development of this dinoflagellate in trace metal-contaminated ecosystems.
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Affiliation(s)
- Natacha Jean
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France.
| | - Estelle Dumont
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France.
| | - Faouzi Herzi
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France.
| | - Thierry Balliau
- PAPPSO-GQE-Le Moulon, INRA, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91190, Gif-sur-Yvette, France.
| | - Mohamed Laabir
- MARBEC UMR 9190 IRD-Ifremer-CNRS-Université de Montpellier, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex 5, France.
| | - Estelle Masseret
- MARBEC UMR 9190 IRD-Ifremer-CNRS-Université de Montpellier, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex 5, France.
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Misson B, Garnier C, Lauga B, Dang DH, Ghiglione JF, Mullot JU, Duran R, Pringault O. Chemical multi-contamination drives benthic prokaryotic diversity in the anthropized Toulon Bay. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 556:319-329. [PMID: 27032072 DOI: 10.1016/j.scitotenv.2016.02.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
Investigating the impact of human activities on marine coastal ecosystems remains difficult because of the co-occurrence of numerous natural and human-induced gradients. Our aims were (i) to evaluate the links between the chemical environment as a whole and microbial diversity in the benthic compartment, and (ii) to compare the contributions of anthropogenic and natural chemical gradients to microbial diversity shifts. We studied surface sediments from 54 sampling sites in the semi-enclosed Toulon Bay (NW Mediterranean) exposed to high anthropogenic pressure. Previously published chemical data were completed by new measurements, resulting in an in depth geochemical characterization by 29 representative environmental variables. Bacterial and archaeal diversity was assessed by terminal restriction fragment length polymorphism profiling on a selection of samples distributed along chemical gradients. Multivariate statistical analyses explained from 45% to 80% of the spatial variation in microbial diversity, considering only the chemical variables. A selection of trace metals of anthropogenic origin appeared to be strong structural factors for both bacterial and archaeal communities. Bacterial terminal restriction fragment (T-RF) richness correlated strongly with both anthropogenic and natural chemical gradients, whereas archaeal T-RF richness demonstrated fewer links with chemical variables. No significant decrease in diversity was evidenced in relation to chemical contamination, suggesting a high adaptive potential of benthic microbial communities in Toulon Bay.
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Affiliation(s)
- Benjamin Misson
- PROTEE, EA 3819, Université de Toulon, CS 60584, 83041 Toulon Cedex 9, France.
| | - Cédric Garnier
- PROTEE, EA 3819, Université de Toulon, CS 60584, 83041 Toulon Cedex 9, France
| | - Béatrice Lauga
- Equipe Environnement et Microbiologie, Melody Group, Université de Pau et des Pays de l'Adour, IPREM, UMR CNRS 5254, BP 11055, F-64013 Pau Cedex, France
| | - Duc Huy Dang
- PROTEE, EA 3819, Université de Toulon, CS 60584, 83041 Toulon Cedex 9, France
| | - Jean-François Ghiglione
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Laboratoire d'Océanographie Microbienne (LOMIC) UMR 7621, Observatoire Océanologique, F-66650 Banyuls/mer, France
| | - Jean-Ulrich Mullot
- LASEM de Toulon, Base Navale Toulon, BP 61, 83800 Toulon Cedex 9, France
| | - Robert Duran
- Equipe Environnement et Microbiologie, Melody Group, Université de Pau et des Pays de l'Adour, IPREM, UMR CNRS 5254, BP 11055, F-64013 Pau Cedex, France
| | - Olivier Pringault
- MARBEC, UMR 9190, CNRS IRD IFREMER Université Montpellier 2, F-34095 Montpellier, France; Laboratoire de Biosurveillance de l'Environnement, Faculté des Sciences de Bizerte, Zarzouna 7021, Tunisia
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9
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Dang DH, Schäfer J, Brach-Papa C, Lenoble V, Durrieu G, Dutruch L, Chiffoleau JF, Gonzalez JL, Blanc G, Mullot JU, Mounier S, Garnier C. Evidencing the Impact of Coastal Contaminated Sediments on Mussels Through Pb Stable Isotopes Composition. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:11438-11448. [PMID: 26348385 DOI: 10.1021/acs.est.5b01893] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Heavily contaminated sediments are a serious concern for ecosystem quality, especially in coastal areas, where vulnerability is high due to intense anthropogenic pressure. Surface sediments (54 stations), 50 cm interface cores (five specific stations), river particles, coal and bulk Pb plate from past French Navy activities, seawater and mussels were collected in Toulon Bay (NW Mediterranean Sea). Lead content and Pb stable isotope composition have evidenced the direct impact of sediment pollution stock on both the water column quality and the living organisms, through the specific Pb isotopic signature in these considered compartments. The history of pollution events including past and present contaminant dispersion in Toulon Bay were also demonstrated by historical records of Pb content and Pb isotope ratios in sediment profiles. The sediment resuspension events, as simulated by batch experiments, could be a major factor contributing to the high Pb mobility in the considered ecosystem. A survey of Pb concentrations in surface seawater at 40 stations has revealed poor seawater quality, affecting both the dissolved fraction and suspended particles and points to marina/harbors as additional diffuse sources of dissolved Pb.
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Affiliation(s)
- Duc Huy Dang
- Université de Toulon , PROTEE, EA 3819, 83957 La Garde, France
- Water Quality Center, Trent University , 1600 West Bank Drive, Peterborough, Ontario, Canada K9J 7B8
| | - Jörg Schäfer
- Université de Bordeaux , UMR 5805 EPOC, CS50023, Av. Geoffroy St. Hilaire, 33615 Pessac Cedex, France
| | | | | | - Gaël Durrieu
- Université de Toulon , PROTEE, EA 3819, 83957 La Garde, France
| | - Lionel Dutruch
- Université de Bordeaux , UMR 5805 EPOC, CS50023, Av. Geoffroy St. Hilaire, 33615 Pessac Cedex, France
| | | | - Jean-Louis Gonzalez
- IFREMER, LBCM, Centre Méditerranée - Zone Portuaire de Brégaillon - CS20 330 - 83507 La Seyne-sur-Mer Cedex, France
| | - Gérard Blanc
- Université de Bordeaux , UMR 5805 EPOC, CS50023, Av. Geoffroy St. Hilaire, 33615 Pessac Cedex, France
| | | | | | - Cédric Garnier
- Université de Toulon , PROTEE, EA 3819, 83957 La Garde, France
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10
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Cindrić AM, Garnier C, Oursel B, Pižeta I, Omanović D. Evidencing the natural and anthropogenic processes controlling trace metals dynamic in a highly stratified estuary: The Krka River estuary (Adriatic, Croatia). MARINE POLLUTION BULLETIN 2015; 94:199-216. [PMID: 25752536 DOI: 10.1016/j.marpolbul.2015.02.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/17/2015] [Accepted: 02/19/2015] [Indexed: 06/04/2023]
Abstract
Distributions of trace metals (TM), organic carbon, SPM and physico-chemical parameters were studied in the highly stratified Krka River estuary in winter/summer periods. The non-conservative behaviour of Zn, Cd, Pb and Cu in the brackish layer (plume), easily spotted due to very low inputs by the river, was mainly caused by their inputs from the pleasure boats, nautical marinas and harbour (e.g. release from antifouling paints). Contrarily, Ni and Co followed near-conservative behaviour. The extremely low SPM discharged by the river, resulted in a predominant dissolved fraction (>80%) of all TM, except Pb. Vertical scavenging, coupled with the long residence time, caused accumulation and progressive upstream increase of TM and SPM in the bottom seawater. Decrease of distribution coefficient (KD) in the brackish layer for winter period was ascribed to the change of SPM nature (terrestrial vs. biogenic), whereas a variable and increased biogenic component of SPM caused scattered KDs in summer.
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Affiliation(s)
- Ana-Marija Cindrić
- Ruđer Bošković Institute, Center for Marine and Environmental Research, Bijenička 54, Zagreb, Croatia
| | - Cédric Garnier
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France
| | - Benjamin Oursel
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France; Aix-Marseille Université-CNRS, UMR 7263/IRD 237 IMBE, Campus St Jérôme, 52, Av. Escadrille Normandie Niemen, 13397 Marseille Cedex 20, France
| | - Ivanka Pižeta
- Ruđer Bošković Institute, Center for Marine and Environmental Research, Bijenička 54, Zagreb, Croatia
| | - Dario Omanović
- Ruđer Bošković Institute, Center for Marine and Environmental Research, Bijenička 54, Zagreb, Croatia.
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11
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Dang DH, Lenoble V, Durrieu G, Omanović D, Mullot JU, Mounier S, Garnier C. Seasonal variations of coastal sedimentary trace metals cycling: insight on the effect of manganese and iron (oxy)hydroxides, sulphide and organic matter. MARINE POLLUTION BULLETIN 2015; 92:113-124. [PMID: 25596891 DOI: 10.1016/j.marpolbul.2014.12.048] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 12/15/2014] [Accepted: 12/30/2014] [Indexed: 06/04/2023]
Abstract
The combination of analysis, multivariate treatment (PCA) and chemical speciation calculation confirmed the control of Fe, Mn, sulphide and organic matter on metals dynamics in coastal sediments (0-5 cm surface sediments and sediments cores) of Toulon Bay (NW Mediterranean). The temporal monitoring of the physic-chemical parameters as well as the dissolved/particulate minor (Fe/Mn) and trace elements (i.e. Ag, Cd, Co, Cu, Ni, Pb, Zn, …) concentrations in porewaters and sediments were assessed. Multivariate treatment revealed different behaviours for marine elements, terrestrial ones and contaminants. Seasonal variations of metals mobilization in porewater were observed, related to diagenesis activity. Element mobility was studied by selective extractions (ascorbate, acid and alkaline) on sediments. Thermodynamic simulation (PHREEQC) was performed to calculate the elemental dissolved speciation, the mineral saturation index and then to simulate the solid/liquid interaction through precipitation processes, studying the contrasted influence of dissolved organic matter and sulphide.
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Affiliation(s)
- Duc Huy Dang
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France
| | | | - Gaël Durrieu
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France
| | - Dario Omanović
- Center for Marine and Environmental Research, Ruđer Bošković Institute, P.O. Box 180, 10002 Zagreb, Croatia
| | | | | | - Cédric Garnier
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France.
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12
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Herzi F, Jean N, Sakka Hlaili A, Mounier S. Three-dimensional (3-D) fluorescence spectroscopy analysis of the fluorescent dissolved organic matter released by the marine toxic dinoflagellate Alexandrium catenella exposed to metal stress by zinc or lead. JOURNAL OF PHYCOLOGY 2014; 50:665-674. [PMID: 26988450 DOI: 10.1111/jpy.12181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Accepted: 02/09/2014] [Indexed: 06/05/2023]
Abstract
We investigated the effects of zinc or lead on growth and on exudation of fluorescent dissolved organic matter (FDOM) by the marine toxic dinoflagellate Alexandrium catenella (Whedon & Kofoid) Balech. The species was exposed to increasing free zinc (1.34 × 10(-7) M-3.98 × 10(-6) M) or lead (5.13 × 10(-9) M-1.82 × 10(-7) M) concentra-tions. Low metal levels ([Zn(2+) ] = 1.34 × 10(-7) M; [Pb(2+) ] = 5.13 × 10(-9) M) had no effect on cell growth. Toxic effects were observed from higher metal contamination ([Zn(2+) ] = 3.98 × 10(-6) M; [Pb(2+) ] = 6.54 × 10(-8) M), as a conversion of vegetative cells into cysts. Analysis of the released FDOM by three-dimensional (3-D) fluorescence spectroscopy was achieved, using the parallel factor analysis (PARAFAC). The PARAFAC modeling revealed four components associated with two contributions: one related to the biological activity; the other linked to the organic matter decomposition in the culture medium. The C1 component combined a tryptophan peak and characteristics of humic substances, whereas the C2 component was considered as a tryptophan protein fluorophore. The two others C3 and C4 components were associated with marine organic matter production. Relea-sed fluorescent substances were induced by low ([Zn(2+) ]= 1.34 × 10(-7) M; [Pb(2+) ] = 5.13 × 10(-9) M) and moderate ([Zn(2+) ] = 6.21 × 10(-7) M; [Pb(2+) ] = 2.64× 10(-9) M) metal concentrations, suggesting the activation of cellular mechanisms in response to metal stress, to exudate FDOM that could complex metal cations and reduce their toxicity toward A. catenella cells.
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Affiliation(s)
- Faouzi Herzi
- Laboratoire de Cytologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Département des Sciences de la Vie, Université de Carthage, Jarzouna, Bizerte, 7021, Tunisie
- Laboratoire Processus de Transferts et d'Echanges dans l'Environnement (PROTEE EA 3819), Equipe Chimie Analytique et Processus de Transferts dans l'Environnement, Université du Sud Toulon - Var, BP 20132, La Garde Cedex, 83 957, France
| | - Natacha Jean
- Laboratoire Processus de Transferts et d'Echanges dans l'Environnement (PROTEE EA 3819), Equipe Chimie Analytique et Processus de Transferts dans l'Environnement, Université du Sud Toulon - Var, BP 20132, La Garde Cedex, 83 957, France
| | - Asma Sakka Hlaili
- Laboratoire de Cytologie Végétale et Phytoplanctonologie, Faculté des Sciences de Bizerte, Département des Sciences de la Vie, Université de Carthage, Jarzouna, Bizerte, 7021, Tunisie
| | - Stéphane Mounier
- Laboratoire Processus de Transferts et d'Echanges dans l'Environnement (PROTEE EA 3819), Equipe Chimie Analytique et Processus de Transferts dans l'Environnement, Université du Sud Toulon - Var, BP 20132, La Garde Cedex, 83 957, France
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13
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Bioremediation of Southern Mediterranean oil polluted sites comes of age. N Biotechnol 2013; 30:743-8. [DOI: 10.1016/j.nbt.2013.05.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 04/21/2013] [Accepted: 05/10/2013] [Indexed: 11/21/2022]
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14
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Herzi F, Hlaili AS, Le Poupon C, Mabrouk HH, Mounier S. Characterization of exudates released by the marine diatom Skeletonema costatum exposed to copper stress: a 3D-fluorescence spectroscopy approach. Biometals 2013; 26:773-81. [DOI: 10.1007/s10534-013-9655-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 07/04/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Faouzi Herzi
- Laboratoire de Cytologie Végétale et Phytoplanctonologie, Département des Sciences de la Vie, Faculté des Sciences de Bizerte, Université de Carthage, 7021, Jarzouna, Bizerte, Tunisia,
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15
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Oursel B, Garnier C, Durrieu G, Mounier S, Omanović D, Lucas Y. Dynamics and fates of trace metals chronically input in a Mediterranean coastal zone impacted by a large urban area. MARINE POLLUTION BULLETIN 2013; 69:137-149. [PMID: 23465577 DOI: 10.1016/j.marpolbul.2013.01.023] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 12/17/2012] [Accepted: 01/23/2013] [Indexed: 06/01/2023]
Abstract
Quantification and characterization of chronic inputs of trace metals and organic carbon in a coastal Mediterranean area (the city of Marseille) during the dry season was carried out. The 625 km(2) watershed includes two small coastal rivers whose waters are mixed with treated wastewater (TWW) just before their outlet into the sea. Dissolved and particulate Cu, Pb, Cd, Zn, Co, Ni and organic carbon concentrations in the rivers were comparable to those in other Mediterranean coastal areas, whereas at the outlet, 2- to 18-fold higher concentrations reflected the impact of the TWW. A non-conservative behavior observed for most of the studied metals in the mixing zone was validated by a remobilization experiment performed in the laboratory. The results showed that sorption/desorption processes could occur with slow kinetics with respect to the mixing time in the plume, indicating non-equilibrium in the dissolved/particulate metal distribution. Thus, a sample filtration immediately after sampling is strictly required.
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Affiliation(s)
- B Oursel
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France
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