Jean‐Baptiste Raina

ORCID: 0000-0002-7508-0004
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About
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Research Areas
  • Coral and Marine Ecosystems Studies
  • Microbial Community Ecology and Physiology
  • Marine and coastal plant biology
  • Marine and coastal ecosystems
  • Aquaculture disease management and microbiota
  • Marine Sponges and Natural Products
  • Marine Biology and Ecology Research
  • Ocean Acidification Effects and Responses
  • Protist diversity and phylogeny
  • Coastal wetland ecosystem dynamics
  • Marine and fisheries research
  • Cephalopods and Marine Biology
  • Probiotics and Fermented Foods
  • Microbial bioremediation and biosurfactants
  • Microplastics and Plastic Pollution
  • Diatoms and Algae Research
  • Vibrio bacteria research studies
  • Algal biology and biofuel production
  • Methane Hydrates and Related Phenomena
  • Marine Bivalve and Aquaculture Studies
  • Gut microbiota and health
  • Bacteriophages and microbial interactions
  • Marine Biology and Environmental Chemistry
  • Molecular Biology Techniques and Applications
  • Isotope Analysis in Ecology

University of Technology Sydney
2016-2025

Centre National de la Recherche Scientifique
2025

École Pratique des Hautes Études
2025

Université de Perpignan
2025

Université Paris Sciences et Lettres
2025

The University of Western Australia
2023

Max Planck Institute for Marine Microbiology
2023

New York University Abu Dhabi
2023

University of Konstanz
2020

Oregon State University
2020

Abstract Despite being one of the simplest metazoans, corals harbor some most highly diverse and abundant microbial communities. Differentiating core, symbiotic bacteria from this host-associated consortium is essential for characterizing functional contributions but has not been possible yet. Here we characterize coral core microbiome demonstrate clear phylogenetic divisions between micro-scale, niche habitats within host. In doing so, discover seven distinct bacterial phylotypes that are...

10.1038/ismej.2015.39 article EN cc-by The ISME Journal 2015-04-17

Marine bacteria play a central role in the degradation of dimethylsulfoniopropionate (DMSP) to dimethyl sulfide (DMS) and acrylic acid, DMS being critical cloud formation thereby cooling effects on climate. High concentrations DMSP have been reported scleractinian coral tissues although, date, there no investigations into influence these organic sulfur compounds coral-associated bacteria. Two species, Montipora aequituberculata Acropora millepora, were sampled their bacterial communities...

10.1128/aem.02567-08 article EN Applied and Environmental Microbiology 2009-04-04

Recurrent mass bleaching events are pushing coral reefs worldwide to the brink of ecological collapse. While symptoms and consequences this breakdown coral-algal symbiosis have been extensively characterized, our understanding underlying causes remains incomplete. Here, we investigated nutrient fluxes physiological as well molecular responses widespread Stylophora pistillata heat stress prior onset identify processes involved in symbiosis. We show that altered cycling during is a primary...

10.1073/pnas.2022653118 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2021-01-26

Summary Climate change is emerging as one of the greatest threats to coral reef ecosystems. Climate‐induced warming events trigger bleaching and mortality, which can indirectly affect fishes. Managing fisheries across mortality expected influence persistence species recovery potential. The most common management recommendation has been prohibit fishing using closures, but this response often limited support from resource users. Here, we explore an alternative managing gear commonly used in...

10.1111/j.1365-2664.2009.01648.x article EN Journal of Applied Ecology 2009-04-14

Bacterial communities associated with healthy corals produce antimicrobial compounds that inhibit the colonization and growth of invasive microbes potential pathogens. To date, however, bacteria-derived molecules have not been identified in reef-building corals. Here, we report isolation an compound produced by Pseudovibrio sp. P12, a common abundant coral-associated bacterium. This strain was capable metabolizing dimethylsulfoniopropionate (DMSP), sulfur molecule high concentrations playing...

10.7717/peerj.2275 article EN cc-by PeerJ 2016-08-18

Summary Dinoflagellates of the genus Symbiodinium underpin survival and ecological success corals. The use cultured strains has been particularly important to disentangle complex life history their contribution coral host physiology. However, these cultures typically harbour abundant bacterial communities which likely play important, but currently unknown, roles in biology. We characterized living association with a wide phylogenetic diversity (18 types spanning 5 clades) define core...

10.1111/1758-2229.12599 article EN publisher-specific-oa Environmental Microbiology Reports 2017-11-10

Abstract The waters surrounding coral reef ecosystems are generally poor in nutrients, yet their levels of primary production comparable with those reported from tropical rain forests. One explanation this paradox is the efficient cycling nutrients between host, its endosymbiotic alga Symbiodinium and a wide array microorganisms. Despite importance for animals' fitness, early life stages initial establishment partnerships microbes involved these processes has received little scrutiny to...

10.1002/ece3.642 article EN Ecology and Evolution 2013-06-18

The symbiosis between cnidarian hosts and microalgae of the genus Symbiodinium provides foundation coral reefs in oligotrophic waters. Understanding nutrient-exchange these partners is key to identifying fundamental mechanisms behind this symbiosis, yet has proven difficult given endosymbiotic nature relationship. In study, we investigated respective contribution host symbiont carbon nitrogen assimilation model system Aiptaisa. For this, combined traditional measurements with nanoscale...

10.3389/fphys.2018.00214 article EN cc-by Frontiers in Physiology 2018-03-16

We identify the first quantitative trait loci for antioxidant capacity in corals, providing possible new avenues management and restoration approaches.

10.1126/sciadv.1500842 article EN cc-by-nc Science Advances 2016-05-06

High-throughput sequencing libraries are typically limited by the requirement for nanograms to micrograms of input DNA. This bottleneck impedes microscale analysis ecosystems and exploration low biomass samples. Current methods amplifying environmental DNA bypass this introduce considerable bias into metagenomic profiles. Here we describe validate a simple modification Illumina Nextera XT library preparation kit which allows creation shotgun from sub-nanogram amounts Community composition...

10.7717/peerj.2486 article EN cc-by PeerJ 2016-09-22

Abstract The skeleton of reef-building coral harbors diverse microbial communities that could compensate for metabolic deficiencies caused by the loss algal endosymbionts, i.e., bleaching. However, it is unknown to what extent endolith taxonomic diversity and functional potential might contribute thermal resilience. Here we exposed Goniastrea edwardsi Porites lutea, two common corals from central Red Sea a 17-day long heat stress. Using hyperspectral imaging, marker gene/metagenomic...

10.1038/s41396-022-01283-y article EN cc-by The ISME Journal 2022-07-15

Symbiotic cnidarians such as corals and anemones form highly productive biodiverse coral reef ecosystems in nutrient-poor ocean environments, a phenomenon known Darwin's paradox. Resolving this paradox requires elucidating the molecular bases of efficient nutrient distribution recycling cnidarian-dinoflagellate symbiosis. Using sea anemone Aiptasia, we show that during symbiosis, increased availability glucose presence algae jointly induce coordinated up-regulation relocalization ammonium...

10.1126/sciadv.adf7108 article EN cc-by-nc Science Advances 2023-03-15

Bacteria are key contributors to microalgae resource acquisition, competitive performance, and functional diversity, but their potential metabolic interactions with coral microalgal endosymbionts (Symbiodiniaceae) have been largely overlooked. Here, we show that altering the bacterial composition of two widespread Symbiodiniaceae species, during free-living stage, results in a significant shift cellular metabolism. Indeed, abundance monosaccharides phytohormone indole-3-acetic acid (IAA)...

10.1038/s41467-023-42663-y article EN cc-by Nature Communications 2023-10-27
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