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Iguchi A, Gibu K, Yorifuji M, Nishijima M, Suzuki A, Ono T, Matsumoto Y, Inoue M, Fujii M, Muraoka D, Fujita Y, Takami H. Transgenerational acclimation to acidified seawater and gene expression patterns in a sea urchin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172616. [PMID: 38642751 DOI: 10.1016/j.scitotenv.2024.172616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024]
Abstract
Transgenerational responses of susceptible calcifying organisms to progressive ocean acidification are an important issue in reducing uncertainty of future predictions. In this study, a two-generation rearing experiment was conducted using mature Mesocentrotus nudus, a major edible sea urchin that occurs along the coasts of northern Japan. Morphological observations and comprehensive gene expression analysis (RNA-seq) of resulting larvae were performed to examine transgenerational acclimation to acidified seawater. Two generations of rearing experiments showed that larvae derived from parents acclimated to acidified seawater tended to have higher survival and show less reduction in body size when exposed to acidified seawater of the same pH, suggesting that a positive carry-over effect occurred. RNA-seq analysis showed that gene expression patterns of larvae originated from both acclimated and non-acclimated parents to acidified seawater tended to be different than control condition, and the gene expression pattern of larvae originated from acclimated parents was substantially different than that of larvae of non-acclimated and control parents.
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Affiliation(s)
- Akira Iguchi
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan; Research laboratory on environmentally-conscious developments and technologies [E-code], National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan.
| | - Kodai Gibu
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan
| | - Makiko Yorifuji
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan
| | - Miyuki Nishijima
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan
| | - Atsushi Suzuki
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan; Research laboratory on environmentally-conscious developments and technologies [E-code], National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan
| | - Tsuneo Ono
- Japan Fisheries Research and Education Agency, Fisheries Resources Institute, Yokohama 236-8648, Japan
| | - Yukio Matsumoto
- Japan Fisheries Research and Education Agency, Fisheries Technology Institute, Miyako Laboratory, Miyako 027-0097, Japan
| | - Mayuri Inoue
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Masahiko Fujii
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo 060-810, Japan
| | - Daisuke Muraoka
- Japan Fisheries Research and Education Agency, Fisheries Technology Institute, Miyako Laboratory, Miyako 027-0097, Japan
| | - Yamato Fujita
- Graduate School of Environmental Science, Hokkaido University, Sapporo 060-810, Japan
| | - Hideki Takami
- Japan Fisheries Research and Education Agency, Fisheries Resources Institute, Shiogama Laboratory, 3-27-5, Shiogama 985-0001, Japan
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Martins CPP, Ziegler M, Schubert P, Wilke T, Wall M. Effects of water flow and ocean acidification on oxygen and pH gradients in coral boundary layer. Sci Rep 2024; 14:12757. [PMID: 38830941 PMCID: PMC11148076 DOI: 10.1038/s41598-024-63210-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 05/27/2024] [Indexed: 06/05/2024] Open
Abstract
Reef-building corals live in highly hydrodynamic environments, where water flow largely controls the complex chemical microenvironments surrounding them-the concentration boundary layer (CBL). The CBL may be key to alleviate ocean acidification (OA) effects on coral colonies by partially isolating them. However, OA effects on coral CBL remain poorly understood, particularly under different flow velocities. Here, we investigated these effects on the reef-building corals Acropora cytherea, Pocillopora verrucosa, and Porites cylindrica. We preconditioned corals to a control (pH 8.0) and OA (pH 7.8) treatment for four months and tested how low flow (2 cm s-1) and moderate flow (6 cm s-1) affected O2 and H+ CBL traits (thickness, surface concentrations, and flux) inside a unidirectional-flow chamber. We found that CBL traits differed between species and flow velocities. Under OA, traits remained generally stable across flows, except surface pH. In all species, the H+ CBL was thin and led to lower surface pH. Still, low flow thickened H+ CBLs and increased light elevation of surface pH. In general, our findings reveal a weak to null OA modulation of the CBL. Moreover, the OA-buffering capacity by the H+ CBL may be limited in coral species, though low flow could enhance CBL sheltering.
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Affiliation(s)
- Catarina P P Martins
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, 35392, Giessen, Germany.
| | - Maren Ziegler
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, 35392, Giessen, Germany
| | - Patrick Schubert
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, 35392, Giessen, Germany
| | - Thomas Wilke
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, 35392, Giessen, Germany
| | - Marlene Wall
- GEOMAR Helmholtz Centre for Ocean Research Kiel, 24148, Kiel, Germany
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Romera-Castillo C, Lucas A, Mallenco-Fornies R, Briones-Rizo M, Calvo E, Pelejero C. Abiotic plastic leaching contributes to ocean acidification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 854:158683. [PMID: 36099941 DOI: 10.1016/j.scitotenv.2022.158683] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 09/07/2022] [Accepted: 09/07/2022] [Indexed: 06/15/2023]
Abstract
Ocean acidification and plastic pollution are considered as potential planetary boundary threats for which crossing certain thresholds could be very harmful for the world's societies and ecosystems well-being. Surface oceans have acidified around 0.1 units since the Industrial Revolution, and the amount of plastic reaching the ocean in 2018 was quantified to 13 million metric tonnes. Currently, both ocean threats are worsening with time. Plastic leaching is known to alter the biogeochemistry of the ocean through the release of dissolved organic matter. However, its impact in the inorganic chemistry of the seawater is less studied. Here we show, from laboratory experiments, that abiotic plastic degradation induces a decrease in seawater pH, particularly if the plastic is already aged, as that found in the ocean. The pH decrease is enhanced by solar radiation, and it is probably induced from a combination of the release of organic acids and the production of CO2. It is also related to the amount of leached dissolved organic carbon, with higher acidification as leaching increases. In coastal areas, where plastic debris accumulates in large quantities, plastic leaching could lead to a seawater pH decrease up to 0.5 units. This is comparable to the projected decrease induced in surface oceans by the end of the twenty-first century for the most pessimistic anthropogenic emissions scenarios.
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Affiliation(s)
| | - Arturo Lucas
- Instituto de Ciencias del Mar-CSIC, Barcelona, Spain
| | | | | | - Eva Calvo
- Instituto de Ciencias del Mar-CSIC, Barcelona, Spain
| | - Carles Pelejero
- Instituto de Ciencias del Mar-CSIC, Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain
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Palladino G, Caroselli E, Tavella T, D'Amico F, Prada F, Mancuso A, Franzellitti S, Rampelli S, Candela M, Goffredo S, Biagi E. Metagenomic shifts in mucus, tissue and skeleton of the coral Balanophyllia europaea living along a natural CO 2 gradient. ISME COMMUNICATIONS 2022; 2:65. [PMID: 37938252 PMCID: PMC9723718 DOI: 10.1038/s43705-022-00152-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 07/01/2022] [Accepted: 07/12/2022] [Indexed: 05/13/2023]
Abstract
Using the Mediterranean coral Balanophyllia europaea naturally growing along a pH gradient close to Panarea island (Italy) as a model, we explored the role of host-associated microbiomes in coral acclimatization to ocean acidification (OA). Coral samples were collected at three sites along the gradient, mimicking seawater conditions projected for 2100 under different IPCC (The Intergovernmental Panel on Climate Change) scenarios, and mucus, soft tissue and skeleton associated microbiomes were characterized by shotgun metagenomics. According to our findings, OA induced functional changes in the microbiomes genetic potential that could mitigate the sub-optimal environmental conditions at three levels: i. selection of bacteria genetically equipped with functions related to stress resistance; ii. shifts in microbial carbohydrate metabolism from energy production to maintenance of cell membranes and walls integrity; iii. gain of functions able to respond to variations in nitrogen needs at the holobiont level, such as genes devoted to organic nitrogen mobilization. We hence provided hypotheses about the functional role of the coral associated microbiome in favoring host acclimatation to OA, remarking on the importance of considering the crosstalk among all the components of the holobiont to unveil how and to what extent corals will maintain their functionality under forthcoming ocean conditions.
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Affiliation(s)
- Giorgia Palladino
- Unit of Microbiome Science and Biotechnology, Department of Pharmacy and Biotechnology, University of Bologna, via Belmeloro 6, 40126, Bologna, Italy
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032, Fano, Pesaro Urbino, Italy
| | - Erik Caroselli
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032, Fano, Pesaro Urbino, Italy
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, via Selmi 3, 40126, Bologna, Italy
| | - Teresa Tavella
- Unit of Microbiome Science and Biotechnology, Department of Pharmacy and Biotechnology, University of Bologna, via Belmeloro 6, 40126, Bologna, Italy
| | - Federica D'Amico
- Unit of Microbiome Science and Biotechnology, Department of Pharmacy and Biotechnology, University of Bologna, via Belmeloro 6, 40126, Bologna, Italy
| | - Fiorella Prada
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032, Fano, Pesaro Urbino, Italy
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, via Selmi 3, 40126, Bologna, Italy
| | - Arianna Mancuso
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032, Fano, Pesaro Urbino, Italy
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, via Selmi 3, 40126, Bologna, Italy
| | - Silvia Franzellitti
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032, Fano, Pesaro Urbino, Italy
- Animal and Environmental Physiology Laboratory, Department of Biological, Geological and Environmental Sciences, University of Bologna, via Sant'Alberto 163, 48123, Ravenna, Italy
| | - Simone Rampelli
- Unit of Microbiome Science and Biotechnology, Department of Pharmacy and Biotechnology, University of Bologna, via Belmeloro 6, 40126, Bologna, Italy
| | - Marco Candela
- Unit of Microbiome Science and Biotechnology, Department of Pharmacy and Biotechnology, University of Bologna, via Belmeloro 6, 40126, Bologna, Italy.
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032, Fano, Pesaro Urbino, Italy.
| | - Stefano Goffredo
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032, Fano, Pesaro Urbino, Italy.
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, via Selmi 3, 40126, Bologna, Italy.
| | - Elena Biagi
- Unit of Microbiome Science and Biotechnology, Department of Pharmacy and Biotechnology, University of Bologna, via Belmeloro 6, 40126, Bologna, Italy
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032, Fano, Pesaro Urbino, Italy
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