Article
Biology
Yunqing Liu, Xin Liao, Tingyu Han, Ao Su, Zhuojun Guo, Na Lu, Chunpeng He, Zuhong Lu
Summary: This study obtained relatively complete transcriptome data of Montipora foliosa through PacBio Sequel II sequencing technology, providing valuable resources for the study of coral symbiosis. Analysis of symbiosis-related genes' function and isoforms was conducted, shedding light on the mechanisms behind coral-zooxanthellae symbiosis.
Review
Marine & Freshwater Biology
Anthony M. M. Bonacolta, Bradley A. A. Weiler, Teresa Porta-Fito, Michael Sweet, Patrick Keeling, Javier del Campo
Summary: Many corals have a symbiotic relationship with photosynthetic dinoflagellates, but the role of microeukaryotes like protists and fungi in the coral holobiont and reef ecosystems is not well understood. Recent advances in metabarcoding have highlighted the importance of microeukaryotes in corals, and it is necessary to present the current knowledge before further studies are conducted.
Article
Biodiversity Conservation
Zhuojun Guo, Xin Liao, Tingyu Han, Junyuan Chen, Chunpeng He, Zuhong Lu
Summary: This study sequenced the full-length transcriptome of the coral Pocillopora damicornis and identified unique genes in both the coral and its symbiotic zooxanthellae. The results indicate that zooxanthellae provide energy and nutrition for the coral host through photosynthesis, and that both partners have anti-stress molecular mechanisms.
Article
Biochemistry & Molecular Biology
Sergio Vargas, Laura Leiva, Michael Eitel, Franziska Curdt, Sven Rohde, Christopher Arnold, Michael Nickel, Peter Schupp, William D. Orsi, Maja Adamska, Gert Woerheide
Summary: Mounting evidence suggests that disturbances to the microbiome influence animal development. In this study, the loss of a key photosymbiont upon shading resulted in a body-plan reorganization in the cyanosponge Lendenfeldia chondrodes. The morphological changes observed in shaded sponges were coupled with broad transcriptomic changes, indicating a coupling between the sponge transcriptomic state and the state of its microbiome.
MOLECULAR BIOLOGY AND EVOLUTION
(2023)
Article
Environmental Sciences
Youfang Sun, Lei Jiang, Sanqiang Gong, Guillermo Diaz-Pulido, Xiangcheng Yuan, Haoya Tong, Lintao Huang, Guowei Zhou, Yuyang Zhang, Hui Huang
Summary: Climate change leads to ocean warming and acidification, posing threats to coral reef ecosystems. This study explores the molecular mechanisms of larval responses to elevated temperature and pCO(2) in Pocillopora damicornis, revealing that larvae exposed to high temperatures experience reduced net photosynthesis, while those exposed to high pCO(2) levels exhibit increased photosynthetic capabilities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Michael T. Connelly, Grace Snyder, Ana M. Palacio-Castro, Phillip R. Gillette, Andrew C. Baker, Nikki Traylor-Knowles
Summary: This study demonstrated that antibiotics can alter the composition and reduce the diversity of coral-associated bacteria, leading to decreased oxygen consumption and activation of host immunity without directly impairing symbiotic algae photosynthesis. These findings highlight the importance of coral-associated bacteria for holobiont health and provide insights for future experiments.
Article
Marine & Freshwater Biology
Martha L. Ostria-Hernandez, Joicye Hernandez-Zulueta, Ofelia Vargas-Ponce, Leopoldo Diaz-Perez, Ruben Araya, Alma P. Rodriguez-Troncoso, Eduardo Rios-Jara, Fabian A. Rodriguez-Zaragoza
Summary: Identifying the core microbiome structure of a metaorganism can be used to monitor the impact of perturbations on it and the changes in its stability, resistance, and resilience. This study determined the exclusive and shared core microbiome taxa of two coral species and their surrounding seawater and sediments, and analyzed their metabolic functions and the influence of anthropogenic stressors.
MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE
(2022)
Article
Biochemistry & Molecular Biology
Albert Rene, Natalia Timoneda, Nagore Sampedro, Elisabet Alacid, Rachele Gallisai, Jordina Gordi, Alan D. Fernandez-Valero, Massimo C. Pernice, Eva Flo, Esther Garces
Summary: This study examined the relationship between Perkinsea parasitoids and bloom-forming dinoflagellate species in marine environments, showing that specific parasite-host interactions exist and the dominance of a parasitoid species is influenced by the presence and abundances of its preferred host.
Article
Marine & Freshwater Biology
Rose-Lynne Savage, Jacqueline L. Maud, Colleen T. E. Kellogg, Brian P. Hunt, Vera Tai
Summary: The eukaryotic microbiomes of dominant crustacean zooplankton from the Strait of Georgia were characterized using metabarcoding. Alveolates, predominantly ciliates and dinoflagellates, were found to be the dominant protists in all examined zooplankton. Symbiont lineages showed host preference, with Pseudocolliniidae ciliate parasites being associated with ostracods. Free-living protists, including diatoms and hydrozoans, were inferred to be part of the zooplankton diet, suggesting an underestimated pathway of carbon cycling.
JOURNAL OF PLANKTON RESEARCH
(2023)
Article
Environmental Sciences
Ziwei Yang, Chuanliang Wu, Junying Zhu, Xinxing Geng, Yaxing Liu, Yufang Zhang, Weiyan Duan
Summary: By examining the physiological parameters of corals and zooxanthellae in Sanya Bay coral reef areas in winter and summer, it was found that water temperature and salinity were the main factors affecting their physiological variations. High temperature/low salinity aquatic environment in summer reduced the density and chlorophyll a+c2 content of zooxanthellae, resulting in high superoxide dismutase and caspase3 activities. Turbidity was also an important factor affecting the physiological characteristics of coral-zooxanthellae symbionts. Overall, these findings have important implications for understanding and protecting coral reef communities in Sanya Bay.
Review
Microbiology
Amin R. Mohamed, Michael A. Ochsenkuehn, Ahmed M. Kazlak, Ahmed Moustafa, Shady A. Amin
Summary: Understanding the complex interactions between corals and their associated microbiome is essential for coral resilience in a warming ocean. Recent research focuses on manipulating the coral microbiome to enhance their ability to withstand stress. The potential mechanisms through which microbiota communicate with and modify host responses, as well as the power of omics tools in studying corals, are highlighted.
FEMS MICROBIOLOGY REVIEWS
(2023)
Article
Ecology
Camila Duarte Ritter, Dominik Forster, Josue A. R. Azevedo, Alexandre Antonelli, R. Henrik Nilsson, Martha E. Trujillo, Micah Dunthorn
Summary: The study utilized DNA metabarcoding data to explore co-occurrence patterns of microorganisms in different Amazonian habitats, revealing that most operational taxonomic units (OTUs) were bacteria with various metabolism modes, and a high frequency of saprotrophic fungi. Organic carbon and base saturation indices were important in Amazonian co-occurrence networks, while other soil properties played a role in co-exclusion. Different habitats showed similar network properties with variations in modularity, likely due to flooding events.
Article
Microbiology
Fangfang Yang, Jiahao Mo, Zhangliang Wei, Lijuan Long
Summary: The study found that calcified algae Porolithon onkodes and Halimeda cylindracea significantly enhanced the settlement and metamorphosis rates of coral larvae Pocillopora damicornis, while fewer larvae settled on Amphiroa fragilissima and Halimeda opuntia. The bacterial community compositions varied among different algae, impacting larval settlement and metamorphosis.
FEMS MICROBIOLOGY ECOLOGY
(2021)
Article
Microbiology
Charlotte Duval, Benjamin Marie, Pierre Foucault, Sebastien Duperron
Summary: This study provides the first insights into the establishment of bacterial microbiota during early developmental stages of laboratory-reared medaka using a 16S-rRNA-sequencing-based approach. Major shifts in community compositions are observed, from a Proteobacteria-dominated community in larvae and juveniles to a more phylum-diverse community towards adulthood.
Review
Environmental Sciences
Moyang Li, Hua-Xia Sheng, Mengyao Dai, Shuh-Ji Kao
Summary: In this study, we synthesized the knowledge advances of different nitrogen processes in coral holobionts from the perspective of the nitrogen cycle. Our analysis revealed significant gaps in our understanding of nitrogen processes in coral holobionts, which hinder our comprehension of nitrogen balance in coral holobionts and, therefore, the coral reef systems. Future research should focus on the application of quantitative research methods to further unravel the nitrogen processes in coral holobionts.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Engineering, Biomedical
Julien Duboisset, Patrick Ferrand, Arthur Baroni, Tilman A. Grunewald, Hamadou Dicko, Olivier Grauby, Jeremie Vidal-Dupiol, Denis Saulnier, Le Moullac Gilles, Martin Rosenthal, Manfred Burghammer, Julius Nouet, Corinne Chevallard, Alain Baronnet, Virginie Chamard
Summary: Biomineralization is a complex process bio-controlled by living organisms, involving physical and chemical processes such as ionic concentration regulation and organic molecules production. This study investigates the early-mineralized calcareous units from two bivalve species using advanced optical and X-ray microscopy methods, revealing chemical and crystallographic insights. The observed ring-like structural features in calcite units are correlated with the absence of calcite and an increase in amorphous calcium carbonate and proteins content. Based on these findings, a temporal biomineralization cycle is proposed, providing biomimetic perspectives for designing crystalline materials.
ACTA BIOMATERIALIA
(2022)
Article
Biology
Jeremie Vidal-Dupiol, Erwan Harscouet, Dor Shefy, Eve Toulza, Olivier Rey, Jean-Francois Allienne, Guillaume Mitta, Baruch Rinkevich
Summary: Chimeras, genetically mixed entities resulting from fusion of conspecifics, have shown to be more environmentally robust in corals, constantly expressing stress-responsive genes and enhancing their ability to cope with environmental stresses, highlighting their potential usefulness as a reef restoration tool and as an evolutionary rescue instrument.
Article
Evolutionary Biology
Pierre-Louis Stenger, Chin-Long Ky, Jeremie Vidal-Dupiol, Serge Planes, Celine Reisser
Summary: The genetic control of color expression in mollusk shells is still poorly understood. This study investigated color-associated genetic variants in pearl oysters using a pooled-sequencing approach. The results identified known and new genes involved in pigment-related pathways, as well as genes in novel pathways associated with shell coloration in P. margaritifera.
EVOLUTIONARY APPLICATIONS
(2023)
Article
Microbiology
Manon Fallet, Caroline Montagnani, Bruno Petton, Luc Dantan, Julien de Lorgeril, Sebastien Comarmond, Cristian Chaparro, Eve Toulza, Simon Boitard, Jean-Michel Escoubas, Agnes Vergnes, Jacqueline Le Grand, Ingo Bulla, Yannick Gueguen, Jeremie Vidal-Dupiol, Christoph Grunau, Guillaume Mitta, Celine Cosseau
Summary: This study found that early microbial exposure in Pacific oysters can significantly improve their survival rate against a pathogen causing mortality syndrome. The protection provided by microbial exposure is inheritable across generations and is associated with changes in epigenetic marks and immune gene expression. This discovery suggests that microbial exposure may be an important strategy for protecting oyster aquaculture from infectious diseases.
Article
Genetics & Heredity
Didier Aurelle, Marine Pratlong, Nicolas Oury, Anne Haguenauer, Pauline Gelin, Helene Magalon, Mehdi Adjeroud, Pascal Romans, Jeremie Vidal-Dupiol, Michel Claereboudt, Camille Nous, Lauric Reynes, Eve Toulza, Francois Bonhomme, Guillaume Mitta, Pierre Pontarotti
Summary: Correctly delimiting species and populations is crucial for connectivity, adaptation, and conservation studies. In this study, we used RAD-sequencing to investigate species differentiation and genetic structure in Pocillopora spp. populations from Oman and French Polynesia. We found significant genetic differentiation between samples from the two regions and identified clonal lineages in both populations.
Editorial Material
Parasitology
Laure Guillou, Jeremy Szymczak, Catharina Alves-de-Souza
Summary: Dinoflagellates, a diverse group of marine plankton, are often infected by the endoparasitoid Amoebophrya ceratii. This parasitoid displays narrow host ranges and is composed of cryptic species, reflecting the diversification pattern of its hosts. Infections lead to the death of the host and the release of dinospores, which contribute to the top-down control of dinoflagellate blooms. A. ceratii shares a common ancestor with its dinoflagellate hosts and shows atypical characteristics, such as the loss of the plastid and extremely reduced mitochondrial DNA.
TRENDS IN PARASITOLOGY
(2023)
Editorial Material
Parasitology
Catharina Alves-de-Souza, Laure Guillou
TRENDS IN PARASITOLOGY
(2023)
Article
Genetics & Heredity
Aurelie Dotto-Maurel, Camille Pelletier, Benjamin Morga, Maude Jacquot, Nicole Faury, Lionel Degremont, Maelis Bereszczynki, Jean Delmotte, Jean-Michel Escoubas, Germain Chevignon
Summary: Whole-genome sequencing is widely used to study aquatic viruses, but their cultivation challenges necessitate the development of new sequencing methods. In this study, we successfully purified OsHV-1 infective particles using tangential flow filtration and sequenced the viral DNA using both Illumina short-read and Nanopore long-read sequencing. The combination of these methods provided a promising approach for in-field sequencing of unculturable aquatic DNA viruses.
MICROBIAL GENOMICS
(2022)
Article
Biochemistry & Molecular Biology
Eglantine Mathieu-Begne, Simon Blanchet, Olivier Rey, Eve Toulza, Charlotte Veyssiere, Sophie Manzi, Maxim Lefort, Orlane Scelsi, Geraldine Loot
Summary: Recent studies have shown that there is a link between diseases and host microbiota. It is difficult to determine whether host microbiota promote infections or whether infections result in changes in host microbiota, especially in natural conditions. However, understanding this is crucial for understanding the role of microbes in disease progression.
Article
Environmental Sciences
Mahery Randrianarivo, Radonirina Lebely Botosoamananto, Lucie Penin, Gildas Todinanahary, Mehdi Adjeroud
Summary: Recruitment is crucial for coral assemblages, and the influence of pre- and post-settlement processes on spatial heterogeneity of adults needs to be determined. We examined the density of juveniles and adults among 18 stations in three regions near Madagascar and assessed the impact of Marine Protected Areas (MPAs). Our findings did not show a significant positive effect of MPAs on juveniles, except for Porites at the study scale. However, the MPA effect was more pronounced for adults, especially for Acropora, Montipora, Seriatopora, and Porites at the regional scale. The correlation between juvenile and adult densities suggests recruitment-limitation relationships for several coral taxa, and highlights the need for conservation measures to specifically protect recruitment processes.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Multidisciplinary Sciences
Daniel Oyanedel, Arnaud Lagorce, Maxime Bruto, Philippe Haffner, Amandine Morot, Yannick Labreuche, Yann Dorant, Sebastien de La Forest Divonne, Francois Delavat, Nicolas Inguimbert, Caroline Montagnani, Benjamin Morga, Eve Toulza, Cristian Chaparro, Jean-Michel Escoubas, Yannick Gueguen, Jeremie Vidal-Dupiol, Julien de Lorgeril, Bruno Petton, Lionel Degremont, Delphine Tourbiez, Lea-Lou Pimpare, Marc Leroy, Oceane Romatif, Juliette Pouzadoux, Guillaume Mitta, Frederique Le Roux, Guillaume M. Charriere, Marie-Agnes Travers, Delphine Destoumieux-Garzon
Summary: In Pacific Oyster Mortality Syndrome (POMS), Vibrio harveyi and ostreid herpesvirus 1 (OsHV-1) are the predominant bacteria causing the disease. V. harveyi synergizes with OsHV-1 by promoting mutual growth and inhibiting oyster's cellular defenses. Furthermore, V. harveyi produces metabolites that benefit the growth of coexisting V. rotiferianus.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Jeremy Carlot, Michalis Vousdoukas, Alessio Rovere, Theofanis Karambas, Hunter S. Lenihan, Mohsen Kayal, Mehdi Adjeroud, Gonzalo Perez-Rosales, Laetitia Hedouin, Valeriano Parravicini
Summary: Coral reefs provide natural coastal protection by reducing the energy of incoming waves. Combining coral disturbance-recovery observations with hydrodynamic models, this study quantifies how structural complexity dissipates wave energy. The findings reveal that halving the structural complexity of healthy coral reefs leads to a 50-fold increase in extreme wave run-up heights that occur once in a 100-year period, posing threats to reef-backed coastal communities in terms of increased waves, erosion, and flooding.
SCIENTIFIC REPORTS
(2023)
Article
Microbiology
Camille Clerissi, Xing Luo, Aude Lucasson, Shogofa Mortaza, Julien de Lorgeril, Eve Toulza, Bruno Petton, Jean-Michel Escoubas, Lionel Degremont, Yannick Gueguen, Delphine Destoumieux-Garzon, Annick Jacq, Guillaume Mitta
Summary: The study used metabarcoding and metatranscriptomic approaches to show that the pathogenesis of POMS is conserved across different infectious environments, and identified a core bacterial consortium that plays a role in POMS pathobiota. The core bacteria have complementary metabolic functions and a low competition for nutrients, which allows them to colonize host tissues and contribute to the conservation of POMS pathobiota.