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Dourdin TS, Berthelin C, Guyomard K, Morin A, Morandi N, Elie N, Villain-Naud N, Rivière G, Sussarellu R. The Pacific oyster reproduction is affected by early-life exposure to environmental pesticide mixture: A multigenerational study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 937:173569. [PMID: 38810751 DOI: 10.1016/j.scitotenv.2024.173569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 05/15/2024] [Accepted: 05/25/2024] [Indexed: 05/31/2024]
Abstract
Pesticides threat marine organisms worldwide. Among them, the Pacific oyster is a bivalve mollusc model in marine ecotoxicology. A large body of literature already stated on the multiple-scale effects pesticides can trigger in the Pacific oyster, throughout its life cycle and in a delayed manner. In particular, reproductive toxicity is of major concern because of its influence on population dynamics. However, past studies mostly investigated pesticide reprotoxicity as a direct effect of exposure during gametogenesis or directly on gametes and little is known about the influence of an early embryo exposure on the breed capacity. Therefore, we studied delayed and multigenerational consequences through gametogenesis features (i.e. sex ratio, glycogen content, gene expression) and reproductive success in two consecutive oyster generations (F0 and F1) exposed to an environmentally-relevant pesticide mixture (sum nominal concentration: 2.85 μg.L-1) during embryo-larval development (0-48 h post fertilization, hpf). In the first generation, glycogen content increased in exposed individuals and the expression of some gametogenesis target genes was modified. The reproductive success measured 48 hpf was higher in exposed individuals. A multigenerational influence was observed in the second generation, with feminisation, acceleration of gametogenesis processes and the sex-specific modification of glycogen metabolism in individuals from exposed parents. This study is the first to highlight the delayed effects on reproduction induced by an early exposure to pesticides, and its multigenerational implications in the Pacific oyster. It suggests that environmental pesticide contamination can have impacts on the recruitment and the dynamics of natural oyster populations exposed during their embryo-larval phase.
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Affiliation(s)
- Thomas Sol Dourdin
- Ifremer, CCEM Contamination Chimique des Écosystèmes Marins, F-44000, France
| | - Clothilde Berthelin
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR8067, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Institut de Recherche et Développement (IRD), Sorbonne Université (SU), Université de Caen Normandie (UCN), Université des Antilles (UA), 75231 Paris CEDEX, France
| | - Killian Guyomard
- Ifremer, EMMA Plateforme Expérimentale Mollusques Marins Atlantique, F-85230, France
| | - Alicia Morin
- Ifremer, CCEM Contamination Chimique des Écosystèmes Marins, F-44000, France
| | - Nathan Morandi
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR8067, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Institut de Recherche et Développement (IRD), Sorbonne Université (SU), Université de Caen Normandie (UCN), Université des Antilles (UA), 75231 Paris CEDEX, France
| | - Nicolas Elie
- Université de Caen Normandie, Structure Federative 4207 'Normandie Oncologie', PLATON Services Unit, Virtual'His, F-14000 Caen, France
| | - Nadège Villain-Naud
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR8067, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Institut de Recherche et Développement (IRD), Sorbonne Université (SU), Université de Caen Normandie (UCN), Université des Antilles (UA), 75231 Paris CEDEX, France
| | - Guillaume Rivière
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR8067, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Institut de Recherche et Développement (IRD), Sorbonne Université (SU), Université de Caen Normandie (UCN), Université des Antilles (UA), 75231 Paris CEDEX, France
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Kim J, Kim HJ, Choi E, Cho M, Choi S, Jeon MA, Lee JS, Park H. Expansion of the HSP70 gene family in Tegillarca granosa and expression profiles in response to zinc toxicity. Cell Stress Chaperones 2024; 29:97-112. [PMID: 38272254 PMCID: PMC10939072 DOI: 10.1016/j.cstres.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/08/2024] [Accepted: 01/20/2024] [Indexed: 01/27/2024] Open
Abstract
Zinc (Zn) is an essential micronutrient in organisms and an abundant element in the Earth's crust. Trace amounts of Zn released from natural sources can enter aquatic ecosystems through weathering and erosion. Zn accumulates in organisms, and when its intracellular concentration exceeds a certain level, it can induce oxidative stress and trigger oxidative stress-mediated heat shock protein (HSP) modulation. HSP70 is the most evolutionarily conserved among the HSP families. Despite extensive research on HSP70 genes in bivalves, the HSP70 gene family of Tegillarca granosa is still poorly characterized. We identified 65 HSP70 genes belonging to 6 families in the T. granosa genome, with 50 HSPa12 and 11 HSPa B2 genes highly expanded. On chromosome 11, 39 HSP70 (60%) genes were identified, and the HSPa12A genes were highly duplicated. A total of 527 and 538 differentially expressed genes were identified in the gills and mantle based on Zn exposure, respectively. The Gene Ontology of cellular anatomical entities was significantly enriched with upregulated differentially expressed genes in the gills and mantle. Eight of the 11 HSPa B2 genes were upregulated in both tissues. Most of the genes identified in both tissues were involved in "protein homeostasis" and "inhibition of apoptosis," which are associated with the HSP70 family's resistance to extrinsic and intrinsic stress. Hence, this study identified that the HSP70 gene family plays a vital role in the adaptation of aquatic organisms to heavy metal (e.g., Zn) stress in contaminated environments by compiling the different physiological responses to preserve homeostasis.
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Affiliation(s)
- Jinmu Kim
- Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Hyeon Jin Kim
- Department of Aqualife Medicine, Chonnam National University, Yeosu, Korea
| | - Eunkyung Choi
- Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Minjoo Cho
- Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Soyun Choi
- Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Mi Ae Jeon
- Aquaculture Management Division, South Sea Fisheries Research Institute, NIFS, Yeosu, Korea
| | - Jung Sick Lee
- Department of Aqualife Medicine, Chonnam National University, Yeosu, Korea.
| | - Hyun Park
- Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea.
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Yuan Y, Teng H, Zhang T, Wang D, Gu H, Lv W. Toxicological effects induced by two carbamates on earthworms (Eisenia fetida): Acute toxicity, arrested regeneration and underlying mechanisms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 269:115824. [PMID: 38096595 DOI: 10.1016/j.ecoenv.2023.115824] [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: 08/01/2023] [Revised: 11/03/2023] [Accepted: 12/10/2023] [Indexed: 01/12/2024]
Abstract
Eisenia fetida is recognised as advantageous model species in ecotoxicological and regeneration investigations. The intensive utilization of carbamate pesticides (CARs) imposes heavy residue burdens and grave hazards on edaphic environments as well as soil fauna therein. However, precise mechanisms whereby the specific CAR exerted toxic effects on earthworms remain largely elusive, notably from regenerative perspective. Herein, acute responses and regenerative toxicity of two carbamates (metolcarb, MEB and fenoxycarb, FEB) against E. fetida were dissected using biochemical, histological as well as molecular approaches following OECD guidelines at the cellular, tissue and organismal level. The acute toxicity data implied that MEB/FEB were very toxic/medium to extremely toxic, respectively in filter paper contact test and low to medium toxic/low toxic, respectively in artificial soil test. Chronic exposure to MEB and FEB at sublethal concentrations significantly mitigated the soluble protein content, protein abundance while enhanced the protein carbonylation level. Moreover, severely retarded posterior renewal of amputated earthworms was noticed in MEB and FEB treatments relative to the control group, with pronouncedly compromised morphology, dwindling segments and elevated cell apoptosis of blastema tissues, which were mediated by the rising Sox2 and decreasing TCTP levels. Taken together, these findings not only presented baseline toxicity cues for MEB and FEB exposure against earthworms, but also yielded mechanistic insights into regenerative toxicity upon CAR exposure, further contributing to the environmental risk assessment and benchmark formulation of agrochemical pollution in terrestrial ecosystem.
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Affiliation(s)
- Yongda Yuan
- Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Haiyuan Teng
- Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Tianshu Zhang
- Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Dongsheng Wang
- Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Haotian Gu
- Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Weiguang Lv
- Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; Agricultural Environment and Farmland Conservation Experiment Station of Ministry Agriculture, Shanghai 201403, China.
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