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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. Sci Total Environ 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Iguchi A, Hayashi M, Yorifuji M, Nishijima M, Gibu K, Kunishima T, Bell T, Suzuki A, Ono T. Whole transcriptome analysis of demersal fish eggs reveals complex responses to ocean deoxygenation and acidification. Sci Total Environ 2024; 917:169484. [PMID: 38302347 DOI: 10.1016/j.scitotenv.2023.169484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 11/20/2023] [Accepted: 12/16/2023] [Indexed: 02/03/2024]
Abstract
Ocean acidification and deoxygenation co-occur in marine environments, causing deterioration of marine ecosystems. However, effects of compound stresses on marine organisms and their physiological coping mechanisms are largely unknown. Here, we show how high pCO2 and low dissolved oxygen (DO) cause transcriptomic changes in eggs of a demersal fish (Sillago japonica), which are fully exposed to such stresses in natural environment. Overall gene expression was affected more strongly by low DO than by high pCO2. Enrichment analysis detected significant stress responses such as glycolytic processes in response to low DO. Increased expression of a group of glycolytic genes under low DO conditions is presumably because oxygen depletion disables the electron transfer pathway, complementing ATP production in the glycolytic pathway. Contrary to expectations, apparent mitigation of gene expression changes was dominant under combined stress conditions, and may represent an innate fish adaptive trait for severe environments.
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Affiliation(s)
- Akira Iguchi
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 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.
| | - Masahiro Hayashi
- Demonstration Laboratory, Marine Ecology Research Institute, 4-7-17 Arahama, Kashiwazaki, Niigata 945-0017, Japan
| | - Makiko Yorifuji
- Demonstration Laboratory, Marine Ecology Research Institute, 4-7-17 Arahama, Kashiwazaki, Niigata 945-0017, Japan
| | - Miyuki Nishijima
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan
| | - Kodai Gibu
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan
| | - Taiga Kunishima
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan; Laboratory of Marine Biology, Division of Applied Biological Science, Faculty of Agriculture, Setsunan University, Hirakata, Japan
| | - Tomoko Bell
- Division of Science and Mathmatics, Newman University, Wichita 67213, KS, USA
| | - Atsushi Suzuki
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 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
- National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-8648, Japan
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Gibu K, Ikeuchi E, Bell T, Nakamura T, Yoshioka Y, Suzuki A, Iguchi A. Calcification rates of a massive and a branching coral species were unrelated to diversity of endosymbiotic dinoflagellates. Mol Biol Rep 2022; 49:9101-9106. [PMID: 35737176 DOI: 10.1007/s11033-022-07702-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/10/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND To explore the possibility that endosymbiotic dinoflagellates (Symbiodiniaceae) are associated with coral calcification rates, we investigated the diversity of symbiotic algae in coral colonies with different calcification rates within massive and branching corals (Porites australiensis and Acropora digitifera). METHODS AND RESULTS Genotyping symbiotic algae from colonies with different calcification rates revealed that all the colonies of both species harbored mainly Cladocopium (previously clade C of Symbiodinium). The Cladocopium symbionts in P. australiensis were mainly composed of C15 and C15bn, and those in A. digitifera of C50a and C50c. We did not detect clear relationships between symbiont compositions and calcification rates within the two coral species. CONCLUSIONS Our results suggest that different coral calcification rates within species may be attributed to genetic factors of coral hosts themselves and/or within symbiont genotypes.
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Affiliation(s)
- Kodai Gibu
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8567, Japan
| | - Eri Ikeuchi
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8567, Japan
| | - Tomoko Bell
- Water and Environmental Research Institute, University of Guam, UOG Station, Mangilao, GU, 96923, USA
| | - Takashi Nakamura
- Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Yuki Yoshioka
- Department of Bioresources Engineering, National Institute of Technology, Okinawa College, 905, Henoko, Nago, Okinawa, 905-2192, Japan
| | - Atsushi Suzuki
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 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
| | - Akira Iguchi
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 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.
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Mizuyama M, Iguchi A, Iijima M, Gibu K, Reimer JD. Comparison of Symbiodiniaceae diversities in different members of a Palythoa species complex (Cnidaria: Anthozoa: Zoantharia)-implications for ecological adaptations to different microhabitats. PeerJ 2020; 8:e8449. [PMID: 32117611 PMCID: PMC7003691 DOI: 10.7717/peerj.8449] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 12/23/2019] [Indexed: 11/20/2022] Open
Abstract
In this study we compared genotypes of zoantharian host-associating algal symbionts among Palythoa species, which are among the dominant benthic reef organisms in the Ryukyu Archipelago, Japan, and evaluated Symbiodiniaceae diversities of closely related congeneric Palythoa species. We targeted a species complex of the zoantharian genus Palythoa (P. tuberculosa, P. sp. yoron, P. mutuki) living among different microhabitats in a narrow reef area of Tokunoshima Island. For phylogenetic analyses, we used two DNA marker regions; nuclear internal transcribed spacer (ITS) and plastid mini-circle non-coding region (psbAncr), both of which have previously been used to determine Symbiodiniaceae genotypes of zoantharian species. Our results showed that all Palythoa species hosted symbionts of the genus Cladocopium, with genotypic compositions of this genus showing some variations among the three different Palythoa species. Additionally, we found that the Cladocopium genotypic composition was statistically different among Palythoa species, and among P. tuberculosa specimens in different microhabitats. Our results suggest that ecological divergence among these three Palythoa species may be related to differing Symbiodiniaceae diversities that may in turn contribute to eco-physiological adaptation into different microhabitats on coral reefs.
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Affiliation(s)
- Masaru Mizuyama
- Molecular Invertebrate Systematics and Ecology Laboratory, Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, Japan.,Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Akira Iguchi
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Mariko Iijima
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Kodai Gibu
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.,Department of Bioresources Engineering, National Institute of Technology, Okinawa College, Nago, Okinawa, Japan
| | - James Davis Reimer
- Molecular Invertebrate Systematics and Ecology Laboratory, Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, Japan.,Tropical Biosphere Research Center, University of the Ryukyus, Nishihara, Okinawa, Japan
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