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Nguyen HTT, Zhao M, Wang T, Dang BT, Geffen AJ, Cummins SF. Sea anemone-anemonefish symbiosis: Behavior and mucous protein profiling. JOURNAL OF FISH BIOLOGY 2024; 105:603-618. [PMID: 38747400 DOI: 10.1111/jfb.15772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 03/21/2024] [Accepted: 04/11/2024] [Indexed: 08/20/2024]
Abstract
Fish species of the genus Amphiprion (Perciformes: Pomacentridae) seek protection from predators among the tentacles of sea anemones as their natural habitat, where they live essentially unharmed from stinging by the host's nematocysts. The skin mucus of these anemonefish has been suggested as a protective mechanism that prevents the discharge of the nematocysts upon contact. Whereas some anemonefish species seem to produce their own protective mucous coating, others may acquire mucus (or biomolecules within) from the sea anemone during an acclimation period. In controlled experiments, we show that Amphiprion ocellaris acclimated successfully to their natural host anemone species Stichodactyla gigantea, and also to Stichodactyla haddoni, and in some cases Heteractis crispa, neither of which are natural host species. No symbiosis was observed for three other anemone species tested, Entacmaea quadricolor, Macrodactyla doreensis, and Heteractis malu. We explored the skin mucous protein profile from naive and experienced A. ocellaris during their acclimation to natural and unnatural host anemones. We confidently report the presence of metabolic and structural proteins in the skin mucus of all samples, likely involved in immunological defense, molecular transport, stress response, and signal transduction. For those anemonefish that established symbiosis, there was a clear increase in ribosomal-type proteins. We additionally provide evidence for the presence of anemone proteins only in the skin mucus of individuals that established symbiosis. Our results support previous speculation of the role of skin mucous-associated proteins in anemonefish-anemone symbiosis. Further exploration of these mucosal proteins could reveal the mechanism of anemonefish acclimation to host anemones.
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Affiliation(s)
- Hai-Thanh T Nguyen
- Biotechnology Department, Institute for Biotechnology and Environment, Nha Trang University, Nha Trang City, Vietnam
| | - Min Zhao
- Biotechnology Deparment, Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, Queensland, Australia
| | - Tianfang Wang
- Biotechnology Deparment, Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, Queensland, Australia
| | - Binh T Dang
- Biotechnology Department, Institute for Biotechnology and Environment, Nha Trang University, Nha Trang City, Vietnam
| | - Audrey J Geffen
- Department of Biological Sciences, University of Bergen, Bergen, Norway
- Department of Life Sciences, Imperial College London, London, UK
| | - Scott F Cummins
- Biotechnology Deparment, Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, Queensland, Australia
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da Silva MI, Ott T. Effects of conceptus proteins on endometrium and blood leukocytes of dairy cattle using transcriptome and meta-analysis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.25.591148. [PMID: 38712302 PMCID: PMC11071483 DOI: 10.1101/2024.04.25.591148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
This study investigates the short and long-term effects of IFNT and PAG on the transcriptome of endometrium and blood leukocytes. Holstein heifers received intrauterine infusions of one of the following treatments: 20 mL of a 200 μg/mL bovine serum albumin solution (BSA; vehicle) from day 14 to 16 of the estrous cycle (BSA), vehicle + 10 μg/mL of IFNT from day 14 to 16 (IFNT3), vehicle + 10 μg/mL of IFNT from day 14 to 19 (IFNT6), and vehicle + 10 μg/mL of IFNT from day 14 to 16 followed by vehicle + 10 μg/mL of IFNT + 5 μg/mL of PAG from day 17 to 19 (IFNT+PAG). RNA-seq analysis was performed in endometrial biopsies and blood leukocytes collected after treatments. Acute IFNT signaling in the endometrium (IFNT3 vs BSA), induced differentially expressed genes (DEG) associated with interferon activation, immune response, inflammation, cell death, and inhibited vesicle transport and extracellular matrix remodeling. Prolonged IFNT signaling (IFNT6 vs IFNT3) altered gene expression related to cell invasion, retinoic acid signaling, and embryo implantation. In contrast, PAG induced numerous DEG in blood leukocytes but only 4 DEG in the endometrium. In blood leukocytes, PAG stimulated genes involved in development and TGFB signaling while inhibiting interferon signaling and cell migration. Overall, IFNT is a primary regulator of endometrial gene expression, while PAG predominantly affected the transcriptome of circulating immune cells during early pregnancy. Further research is essential to fully grasp the roles of identified DEG in both the endometrium and blood leukocytes.
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Affiliation(s)
- Maria Isabel da Silva
- Department of Animal Science, Center for Reproductive Biology and Health, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, USA
| | - Troy Ott
- Department of Animal Science, Center for Reproductive Biology and Health, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, USA
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Herrera M, Ravasi T, Laudet V. Anemonefishes: A model system for evolutionary genomics. F1000Res 2023; 12:204. [PMID: 37928172 PMCID: PMC10624958 DOI: 10.12688/f1000research.130752.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/20/2023] [Indexed: 11/07/2023] Open
Abstract
Anemonefishes are an iconic group of coral reef fish particularly known for their mutualistic relationship with sea anemones. This mutualism is especially intriguing as it likely prompted the rapid diversification of anemonefish. Understanding the genomic architecture underlying this process has indeed become one of the holy grails of evolutionary research in these fishes. Recently, anemonefishes have also been used as a model system to study the molecular basis of highly complex traits such as color patterning, social sex change, larval dispersal and life span. Extensive genomic resources including several high-quality reference genomes, a linkage map, and various genetic tools have indeed enabled the identification of genomic features controlling some of these fascinating attributes, but also provided insights into the molecular mechanisms underlying adaptive responses to changing environments. Here, we review the latest findings and new avenues of research that have led to this group of fish being regarded as a model for evolutionary genomics.
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Affiliation(s)
- Marcela Herrera
- Marine Eco-Evo-Devo Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Timothy Ravasi
- Marine Climate Change Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, 4811, Australia
| | - Vincent Laudet
- Marine Eco-Evo-Devo Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
- Marine Research Station, Institute of Cellular and Organismic Biology (ICOB), Academia Sinica, 23-10, Dah-Uen Rd, Jiau Shi I-Lan 262, Taiwan
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Heim S, Teav T, Gallart-Ayala H, Ivanisevic J, Salamin N. Divergence in metabolomic profile in clownfish and damselfish skin mucus. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1050083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
IntroductionThe clownfish - sea anemone mutualism was suggested to have triggered the adaptive radiation of clownfishes, but the origin of clownfish resistance to stinging tentacles of host anemones remains unclear. The presence of specific compounds in the mucus of clownfishes conferring them the unique ability to prevent nematocyst discharge from their hosts has been the most supported hypothesis. Yet the mystery regarding the types of compounds found in clownfish skin mucus remains unsolved.MethodsWe analyzed the chemical composition of clownfish and damselfish mucus using an untargeted metabolomics (HILIC-HRMS) and lipidomics (RPLC-HRMS) approach.Results and DiscussionThe polar and lipid metabolome signatures were highly specific and allowed to discriminate between the clownfish and damselfish clades. The most discriminative part of the signature was the sphingolipid profile, displaying a broader diversity of ceramides present in significantly higher levels in clownfish mucus. Importantly, the inter-specific variability of metabolic signature was significantly higher in clownfishes, although their diversification is evolutionarily more recent, thus implying the impact of symbiosis on metabolic variability and adaptation. Furthermore, specialists and generalists clownfish species displayed distinctive metabolite signature. Two strict clownfish specialists, which are phylogenetically distant but share the same host species, clustered together based on their molecular signature, suggesting a link with their mutualistic nature. Overall, comparative analyses of metabolic signatures highlight differences in chemical composition of clownfish mucus and provide insight into biochemical pathways potentially implicated in clownfish adaptation to inhabit sea anemones and consequently diversify.
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Émie AG, François-Étienne S, Sidki B, Nicolas D. Microbiomes of clownfish and their symbiotic host anemone converge before their first physical contact. MICROBIOME 2021; 9:109. [PMID: 34001275 PMCID: PMC8130386 DOI: 10.1186/s40168-021-01058-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND One of the most charismatic, and yet not completely resolved example of mutualistic interaction is the partnership of clownfish and its symbiotic sea anemone. The mechanism explaining this tolerance currently relies on the molecular mimicry of clownfish epithelial mucus, which could serve as camouflage, preventing the anemone's nematocysts' discharge. Resident bacteria are known as key drivers of epithelial mucus chemical signature in vertebrates. A recent study has proposed a restructuration of the skin microbiota in a generalist clown fish when first contacting its symbiotic anemone. We explored a novel hypothesis by testing the effect of remote interaction on epithelial microbiota restructuration in both partners. METHODS With metataxonomics, we investigated the epithelial microbiota dynamic of 18 pairs of percula clownfish (Amphiprion percula) and their symbiotic anemone Heteractis magnifica in remote interaction, physical interaction and control groups for both partners during a 4-week trial. RESULTS The Physical and Remote Interaction groups' results evidence gradual epithelial microbiota convergence between both partners when fish and anemone were placed in the same water system. This convergence occurred preceding any physical contact between partners, and was maintained during the 2-week interaction period in both contact groups. After the interaction period, community structure of both fish and anemone's epthelial community structures maintained the interaction signature 2 weeks after fish-anemone pairs' separation. Furthermore, the interaction signature persistence was observed both in the Physical and Remote Interaction groups, thus suggesting that water-mediated chemical communication between symbiotic partners was strong enough to shift the skin microbiota durably, even after the separation of fish-anemone pairs. Finally, our results suggest that fish-anemone convergent microbiota restructuration was increasingly associated with the parallel recruitment of three Flavobacteriaceae strains closely related to a tyrosinase-producing Cellulophaga tyrosinoxydans. CONCLUSIONS Our study shows that bacterial community restructuration, in the acclimation process, does not only rely on direct physical contact. Furthermore, our results challenge, for the first time, the traditional unidirectional chemical camouflage hypothesis, as we argue that convergence of the epithelial microbiota of both partners may play essential roles in establishing mutual acceptance. Video abstract Fish-anemone symbiotic relationship.
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Affiliation(s)
- Audet-Gilbert Émie
- Institut de Biologie Intégrative et des Systèmes, Université Laval, 1030 avenue de la Médecine, Québec, QC G1V 0A6 Canada
| | - Sylvain François-Étienne
- Institut de Biologie Intégrative et des Systèmes, Université Laval, 1030 avenue de la Médecine, Québec, QC G1V 0A6 Canada
| | - Bouslama Sidki
- Institut de Biologie Intégrative et des Systèmes, Université Laval, 1030 avenue de la Médecine, Québec, QC G1V 0A6 Canada
| | - Derome Nicolas
- Institut de Biologie Intégrative et des Systèmes, Université Laval, 1030 avenue de la Médecine, Québec, QC G1V 0A6 Canada
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Roux N, Salis P, Lee SH, Besseau L, Laudet V. Anemonefish, a model for Eco-Evo-Devo. EvoDevo 2020; 11:20. [PMID: 33042514 PMCID: PMC7539381 DOI: 10.1186/s13227-020-00166-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/18/2020] [Indexed: 12/20/2022] Open
Abstract
Anemonefish, are a group of about 30 species of damselfish (Pomacentridae) that have long aroused the interest of coral reef fish ecologists. Combining a series of original biological traits and practical features in their breeding that are described in this paper, anemonefish are now emerging as an experimental system of interest for developmental biology, ecology and evolutionary sciences. They are small sized and relatively easy to breed in specific husbandries, unlike the large-sized marine fish used for aquaculture. Because they live in highly structured social groups in sea anemones, anemonefish allow addressing a series of relevant scientific questions such as the social control of growth and sex change, the mechanisms controlling symbiosis, the establishment and variation of complex color patterns, and the regulation of aging. Combined with the use of behavioral experiments, that can be performed in the lab or directly in the wild, as well as functional genetics and genomics, anemonefish provide an attractive experimental system for Eco-Evo-Devo.
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Affiliation(s)
- Natacha Roux
- Sorbonne Université, CNRS, UMR « Biologie Intégrative Des Organismes Marins », BIOM, 1, 66650 Banyuls-sur-Mer, France
| | - Pauline Salis
- Sorbonne Université, CNRS, UMR « Biologie Intégrative Des Organismes Marins », BIOM, 1, 66650 Banyuls-sur-Mer, France
| | - Shu-Hua Lee
- Lab of Marine Eco-Evo-Devo, Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Laurence Besseau
- Sorbonne Université, CNRS, UMR « Biologie Intégrative Des Organismes Marins », BIOM, 1, 66650 Banyuls-sur-Mer, France
| | - Vincent Laudet
- Lab of Marine Eco-Evo-Devo, Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan.,Marine Eco-Evo-Devo Unit, Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna son, Okinawa, 904-0495 Japan
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