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Yang Y, Ni J, Niu D, Zheng G, Li Y. Physiological response of the razor clam Sinonovacula constricta exposed to hyposalinity stress. AQUACULTURE AND FISHERIES 2022. [DOI: 10.1016/j.aaf.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Popovic I, Riginos C. Comparative genomics reveals divergent thermal selection in warm‐ and cold‐tolerant marine mussels. Mol Ecol 2020; 29:519-535. [DOI: 10.1111/mec.15339] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 12/10/2019] [Accepted: 12/13/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Iva Popovic
- School of Biological Sciences University of Queensland St Lucia Qld Australia
| | - Cynthia Riginos
- School of Biological Sciences University of Queensland St Lucia Qld Australia
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Haider F, Sokolov EP, Timm S, Hagemann M, Blanco Rayón E, Marigómez I, Izagirre U, Sokolova IM. Interactive effects of osmotic stress and burrowing activity on protein metabolism and muscle capacity in the soft shell clam Mya arenaria. Comp Biochem Physiol A Mol Integr Physiol 2018; 228:81-93. [PMID: 30445227 DOI: 10.1016/j.cbpa.2018.10.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/28/2018] [Accepted: 10/29/2018] [Indexed: 01/28/2023]
Abstract
Bioturbators such as sediment-dwelling marine bivalves are ecosystem engineers that enhance sediment-water exchange and benthic-pelagic coupling. In shallow coastal areas, bivalves are exposed to frequent disturbance and salinity stress that might negatively affect their activity and physiological performance; however, the mechanisms underlying these effects are not fully understood. We investigated the effects of osmotic stress (low and fluctuating salinity) and repeated burrowing on aerobic and contractile capacity of the foot muscle (assessed by the activity of succinate dehydrogenase and myosin ATPase) as well as the levels of organic osmolytes (free amino acids) and biochemical markers of protein synthesis and proteolysis in key osmoregulatory and energy storing tissues (gills and hepatopancreas, respectively) in a common bioturbator, the soft shell clam Mya arenaria. Osmotic stress and exhaustive exercise altered the foot muscle capacity of soft shell clams and had a strong impact on protein and amino acid homeostasis in tissues not directly involved in locomotion. Acclimation to constant low salinity (5 practical salinity units) depleted the whole-body free amino acid pool and affected protein synthesis but not protein breakdown in the gill. In contrast, fluctuating (5-15) salinity increased protein breakdown rate, suppressed protein synthesis, caused oxidative damage to proteins in the gill and selectively depleted whole-body glycine pool. Clams acclimated to normal salinity (15) increased the aerobic capacity of the foot muscle upon repeated burrowing, whereas acclimation to low and fluctuating salinity reduced this adaptive muscle plasticity. Under the normal and low salinity conditions, exhaustive exercise induced protein conservation pathways (indicated by suppression of protein synthesis and catabolism), but this effect was disrupted by fluctuating salinity. These findings indicate that exhaustive exercise and osmotic stress interactively affect whole-body protein homeostasis and functional capacity of the foot muscle in soft shell clams which might contribute to reduced burrowing activity of bivalve bioturbators in osmotically challenging environments such as estuaries and shallow coastal zones.
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Affiliation(s)
- Fouzia Haider
- Department of Marine Biology, University of Rostock, Rostock, Germany
| | - Eugene P Sokolov
- Leibniz Institute for Baltic Sea Research, Leibniz ScienceCampus Phosphorus Research Rostock, Warnemünde, Germany; Department of Applied Ecology, University of Rostock, Rostock, Germany
| | - Stefan Timm
- Department of Plant Physiology, University of Rostock, Rostock, Germany
| | - Martin Hagemann
- Department of Plant Physiology, University of Rostock, Rostock, Germany
| | - Esther Blanco Rayón
- Research Centre for Experimental Marine Biology and Biotechnology, University of the Basque Country, Plentzia, Bizkaia, Spain
| | - Ionan Marigómez
- Research Centre for Experimental Marine Biology and Biotechnology, University of the Basque Country, Plentzia, Bizkaia, Spain
| | - Urtzi Izagirre
- Research Centre for Experimental Marine Biology and Biotechnology, University of the Basque Country, Plentzia, Bizkaia, Spain
| | - Inna M Sokolova
- Department of Marine Biology, University of Rostock, Rostock, Germany; Department of Maritime Systems, Interdisciplinary Faculty, University of Rostock, Rostock, Germany.
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Effect of environmental salinity manipulation on uptake rates and distribution patterns of waterborne amino acids in the Pacific hagfish. Comp Biochem Physiol A Mol Integr Physiol 2017; 204:164-168. [DOI: 10.1016/j.cbpa.2016.11.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/24/2016] [Accepted: 11/28/2016] [Indexed: 11/19/2022]
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Lin CH, Yeh PL, Lee TH. Ionic and Amino Acid Regulation in Hard Clam (Meretrix lusoria) in Response to Salinity Challenges. Front Physiol 2016; 7:368. [PMID: 27610088 PMCID: PMC4997000 DOI: 10.3389/fphys.2016.00368] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 08/09/2016] [Indexed: 11/13/2022] Open
Abstract
Most marine mollusks are osmoconformers, in that, their body fluid osmolality changes in the direction of the change in environmental salinity. Marine mollusks exhibit a number of osmoregulatory mechanisms to cope with either hypo- or hyperosmotic stress. The effects of changes in salinity on the osmoregulatory mechanisms of the hard clam (Meretrix lusoria, an economically important species of marine bivalve for Taiwan) have not been determined. In this study, we examined the effect of exposure to hypo (10‰)- and hyper (35‰)-osmotic salinity on hard clams raised at their natural salinity (20‰). The osmolality, [Na(+)], and [Cl(-)] of the hard clam hemolymph were changed in the same direction as the surrounding salinity. Further, the contents of total free amino acids including taurine in the gills and mantles were significantly upregulated in hard clam with increasing salinity. The gill Na(+), K(+)-ATPase (NKA) activity, the important enzyme regulating cellular inorganic ions, was not affected by the changed salinity. Mantle NKA activity, however, was stimulated in the 35‰ SW treatment. The taurine transporter (TAUT) is related to the regulation of intracellular contents of taurine, the dominant osmolyte. Herein, a TAUT gene of hard clam was cloned and a TAUT antibody was derived for the immunoblotting. The TAUT mRNA expression of the mantle in hard clam was significantly stimulated in 35‰ SW, but protein expression was not modulated by the changed salinity. In gills of the hard clam with 10‰ SW, both TAUT mRNA and protein expressions were significantly stimulated, and it may reflect a feedback regulation from the decreased gills taurine content under long-term hypoosmotic acclimation. These findings suggest that TAUT expression is regulated differently in gills and mantles following exposure to alterations in environmental salinity. Taken together, this study used the physiological, biochemical and molecular approaches to simultaneously explore the osmoregulation in tissues of hard clam and may further help to understand the osmoregulation in bivalves.
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Affiliation(s)
- Chia-Hao Lin
- National Institute for Basic Biology, National Institutes of Natural Sciences Okazaki, Japan
| | - Po-Ling Yeh
- Department of Life Sciences, National Chung Hsing University Taichung, Taiwan
| | - Tsung-Han Lee
- Department of Life Sciences, National Chung Hsing UniversityTaichung, Taiwan; Agricultural Biotechnology Center, National Chung Hsing UniversityTaichung, Taiwan
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Campos A, Danielsson G, Farinha AP, Kuruvilla J, Warholm P, Cristobal S. Shotgun proteomics to unravel marine mussel (Mytilus edulis) response to long-term exposure to low salinity and propranolol in a Baltic Sea microcosm. J Proteomics 2016; 137:97-106. [PMID: 26820222 DOI: 10.1016/j.jprot.2016.01.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 12/23/2015] [Accepted: 01/19/2016] [Indexed: 02/06/2023]
Abstract
UNLABELLED Pharmaceuticals, among them the β-adrenoceptor blocker propranolol, are an important group of environmental contaminants reported in European waters. Laboratory exposure to pharmaceuticals on marine species has been performed without considering the input of the ecosystem flow. To unravel the ecosystem response to long-term exposure to propranolol we have performed long-term exposure to propranolol and low salinity in microcosms. We applied shotgun proteomic analysis to gills of Mytilus edulis from those Baltic Sea microcosms and identified 2071 proteins with a proteogenomic strategy. The proteome profiling patterns from the 587 highly reproductive proteins among groups define salinity as a key factor in the mussel's response to propranolol. Exposure at low salinity drives molecular mechanisms of adaptation based on a decrease in the abundance of several cytoskeletal proteins, signalling and intracellular membrane trafficking pathway combined with a response towards the maintenance of transcription and translation. The exposure to propranolol combined with low salinity modulates the expression of structural proteins including cilia functions and decreases the expression of membrane protein transporters. This study reinforces the environment concerns of the impact of low salinity in combination with anthropogenic pollutants and anticipates critical physiological conditions for the survival of the blue mussel in the northern areas. BIOLOGICAL SIGNIFICANCE Applying shotgun proteomic analysis to M. edulis gills samples from a long-term microcosm exposure to propranolol and following a proteogenomic identification strategy, we have identified 2071 proteins. The proteomic analysis unrevealed which molecular mechanisms drive the adaptation to low salinity stress and how salinity modulates the effects of exposure to propranolol. These results reinforce the idea of the impact of low salinity in combination with anthropogenic pollutants and anticipate critical physiological condition.
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Affiliation(s)
- Alexandre Campos
- Department of Clinical and Experimental Medicine, Cell Biology, Faculty of Medicine, Linköping University, Linköping, Sweden
| | - Gabriela Danielsson
- Department of Biochemistry and Biophysics, Science for Life Laboratory, Stockholm University, Stockholm, Sweden
| | - Ana Paula Farinha
- Department of Clinical and Experimental Medicine, Cell Biology, Faculty of Medicine, Linköping University, Linköping, Sweden
| | - Jacob Kuruvilla
- Department of Clinical and Experimental Medicine, Cell Biology, Faculty of Medicine, Linköping University, Linköping, Sweden
| | - Per Warholm
- Department of Biochemistry and Biophysics, Science for Life Laboratory, Stockholm University, Stockholm, Sweden
| | - Susana Cristobal
- Department of Clinical and Experimental Medicine, Cell Biology, Faculty of Medicine, Linköping University, Linköping, Sweden; IKERBASQUE, Basque Foundation for Science, Bilbao, Bizkaia, Spain; Department of Physiology, Faculty of Medicine and Dentistry, University of Basque Country UPV/EHU, Bizkaia, Spain.
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LOCKWOOD BRENTL, SOMERO GEORGEN. Transcriptomic responses to salinity stress in invasive and native blue mussels (genus Mytilus). Mol Ecol 2010; 20:517-29. [DOI: 10.1111/j.1365-294x.2010.04973.x] [Citation(s) in RCA: 136] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Cornet M. Effects of seawater salinity fluctuations on primary tissue culture from the mussel Mytilus galloprovincialis Potential application to the detection of seawater genotoxicity. Toxicol In Vitro 2006; 20:1500-5. [PMID: 16806799 DOI: 10.1016/j.tiv.2006.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2005] [Revised: 03/31/2006] [Accepted: 05/12/2006] [Indexed: 10/24/2022]
Abstract
The present results were obtained in the context of an attempt to develop an in vitro test intended to assess the genotoxicity of seawater. It is based on a short-term culture method of mussel mantle explants that gives mitotic cells in which DNA damage is likely to be detected. Its principle consists of the incorporation of the seawater to be tested in the culture medium. Two factors that influence cell proliferation were studied: (1) salinity of seawater and (2) basic composition of the culture medium i.e. replacement of Eagle's Basal Medium (BME) by Eagle's Minimum Essential Medium (MEM). When culture medium contained BME, a salinity change from 35 per thousand to 28 per thousand (that is the case for coastal or estuarine waters) resulted in a significant reduction of cell proliferation. In contrast, when culture medium was prepared with MEM, the same decrease of salinity did not change significantly the number of metaphase cells obtained. This suggested medium prepared with MEM allowed tissues in culture to better withstand the hypoosmotic shock generated by 28 per thousand seawater. This has been attributed to amino acids the concentration of which being higher in MEM than in BME. Direct and indirect mechanisms of osmoregulation are suggested to explain the observations. These results show that the test proposed could be used to assess the genotoxicity of coastal or estuarine seawater with salinity comprised from 28 per thousand to 35 per thousand, provided that MEM is used.
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Affiliation(s)
- Michel Cornet
- UMR 5805, Environnements et Paléoenvironnements Océaniques (EPOC), Université Bordeaux 1-CNRS, Avenue des Facultés, 33405 Talence Cedex, France.
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Hosoi M, Takeuchi K, Sawada H, Toyohara H. Expression and functional analysis of mussel taurine transporter, as a key molecule in cellular osmoconforming. ACTA ACUST UNITED AC 2006; 208:4203-11. [PMID: 16272243 DOI: 10.1242/jeb.01868] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Most aquatic invertebrates adapt to environmental osmotic changes primarily by the cellular osmoconforming process, in which osmolytes accumulated in their cells play an essential role. Taurine is one of the most widely utilized osmolytes and the most abundant in many molluscs. Here, we report the structure, function and expression of the taurine transporter in the Mediterranean blue mussel (muTAUT), as a key molecule in the cellular osmoconforming process. Deduced amino acid sequence identity among muTAUT and vertebrate taurine transporters is lower (47-51%) than that among vertebrate taurine transporters (>78%). muTAUT has a lower affinity and specificity for taurine and a requirement for higher NaCl concentration than vertebrate taurine transporters. This seems to reflect the internal environment of the mussel; higher NaCl and taurine concentrations. In addition to the hyperosmotic induction that has been reported for cloned taurine transporters, the increase in muTAUT mRNA was unexpectedly observed under hypoosmolality, which was depressed by the addition of taurine to ambient seawater. In view of the decrease in taurine content in mussel tissue under conditions of hypoosmolality reported previously, our results lead to the conclusion that muTAUT does not respond directly to hypoosmolality, but to the consequent decrease in taurine content. By immunohistochemistry, intensive expression of muTAUT was observed in the gill and epithelium of the mantle, which were directly exposed to intensive osmotic changes of ambient seawater.
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Affiliation(s)
- Masatomi Hosoi
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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