The coral microbiome in sickness, in health and in a changing world

Nature Reviews Microbiology, Journal Year: 2024, Volume and Issue: 22(8), P. 460 - 475

Published: March 4, 2024

Language: Английский

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Frenemies on the reef? Resolving the coral–Endozoicomonas association

Trends in Microbiology, Journal Year: 2024, Volume and Issue: 32(5), P. 422 - 434

Published: Jan. 11, 2024

Language: Английский

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Integrating cryptic diversity into coral evolution, symbiosis and conservation

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(4), P. 622 - 636

Published: Feb. 13, 2024

Language: Английский

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Probiotics reshape the coral microbiome in situ without detectable off-target effects in the surrounding environment

Communications Biology, Journal Year: 2024, Volume and Issue: 7(1)

Published: April 9, 2024

Beneficial microorganisms for corals (BMCs), or probiotics, can enhance coral resilience against stressors in laboratory trials. However, the ability of probiotics to restructure microbiome situ is yet be determined. As a first step elucidate this, we inoculated putative probiotic bacteria (pBMCs) on healthy colonies Pocillopora verrucosa Red Sea, three times per week, during 3 months. pBMCs significantly influenced microbiome, while surrounding seawater and sediment remained unchanged. The genera Halomonas, Pseudoalteromonas, Bacillus were enriched probiotic-treated corals. Furthermore, treatment also correlated with an increase other beneficial groups (e.g., Ruegeria Limosilactobacillus), decrease potential pathogens, such as Vibrio. all (treated non-treated) throughout experiment, could not track health improvements protection stress. Our data indicate that healthy, therefore stable, microbiomes restructured situ, although repeated continuous inoculations may required these cases. Further, our study provides supporting evidence that, at studied scale, have no detectable off-target effects near

Language: Английский

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Inherent differential microbial assemblages and functions associated with corals exhibiting different thermal phenotypes

Science Advances, Journal Year: 2025, Volume and Issue: 11(3)

Published: Jan. 17, 2025

Certain coral individuals exhibit enhanced resistance to thermal bleaching, yet the specific microbial assemblages and their roles in these phenotypes remain unclear. We compared communities of bleaching–resistant (TBR) bleaching–sensitive (TBS) corals using metabarcoding metagenomics. Our multidomain approach revealed stable distinct compositions between phenotypes. Notably, TBR were inherently enriched with eukaryotes, particularly Symbiodiniaceae, linked photosynthesis, biosynthesis antibiotic antitumor compounds glycosylphosphatidylinositol-anchor proteins, crucial for cell wall regulation metabolite exchange. In contrast, TBS dominated by bacterial metabolic genes related nitrogen, amino acid, lipid metabolism. The inherent microbiome differences corals, already observed before stress, point holobiont associated bleaching resistance, offering insights into mechanisms underlying response climate-induced stress.

Language: Английский

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Coral microbiome composition along the northern Red Sea suggests high plasticity of bacterial and specificity of endosymbiotic dinoflagellate communities

Microbiome, Journal Year: 2020, Volume and Issue: 8(1)

Published: Feb. 3, 2020

The capacity of reef-building corals to tolerate (or adapt to) heat stress is a key factor determining their resilience future climate change. Changes in coral microbiome composition (particularly for microalgal endosymbionts and bacteria) potential mechanism that may assist thrive warm waters. northern Red Sea experiences extreme temperatures anomalies, yet this area rarely bleach suggesting possible refugia However, the composition, how it relates waters region, entirely unknown.We investigated microbiomes six species (Porites nodifera, Favia favus, Pocillopora damicornis, Seriatopora hystrix, Xenia umbellata, Sarcophyton trocheliophorum) from five sites spanning 4° latitude summer mean temperature ranges 26.6 °C 29.3 °C. A total 19 distinct dinoflagellate were identified as belonging three genera family Symbiodiniaceae (Symbiodinium, Cladocopium, Durusdinium). Of these, 86% belonged genus with notably novel types (19%). endosymbiont community showed high degree host-specificity despite latitudinal gradient. In contrast, diversity bacterial communities surface mucus layer (SML)-a compartment particularly sensitive environmental change-varied significantly between sites, however any given was species-specific.The conserved endosymbiotic suggests physiological plasticity support holobiont productivity across different regimes. Further, presence algal selection certain genotypes genetic adaptation) within semi-isolated Sea. dynamic bacteria associated SML contribute function broaden ecological niche. doing so, aid local acclimatization by readily responding changes host environment. Our study provides insight about selective endemic nature along refugia.

Language: Английский

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Defining Coral Bleaching as a Microbial Dysbiosis within the Coral Holobiont

Microorganisms, Journal Year: 2020, Volume and Issue: 8(11), P. 1682 - 1682

Published: Oct. 29, 2020

Coral microbiomes are critical to holobiont health and functioning, but the stability of host–microbial interactions is fragile, easily shifting from eubiosis dysbiosis. The heat-induced breakdown symbiosis between host its dinoflagellate algae (that is, “bleaching”), one most devastating outcomes for reef ecosystems. Yet, bleaching tolerance has been observed in some coral species. This review provides an overview holobiont’s diversity, explores thermal relation their associated microorganisms, discusses hypothesis adaptive dysbiosis as a mechanism environmental adaptation, mentions potential solutions mitigate bleaching, suggests new research avenues. More specifically, we define succession three stages, where microbiota can (i) maintain essential functions homeostasis during stress and/or (ii) act buffer by favoring recruitment thermally tolerant Symbiodiniaceae species (adaptive dysbiosis), (iii) stressors exceed buffering capacity both microbial partners leading death.

Language: Английский

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Insights from extreme coral reefs in a changing world

Coral Reefs, Journal Year: 2020, Volume and Issue: 39(3), P. 495 - 507

Published: June 1, 2020

Language: Английский

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Contrasting heat stress response patterns of coral holobionts across the Red Sea suggest distinct mechanisms of thermal tolerance

Molecular Ecology, Journal Year: 2021, Volume and Issue: 30(18), P. 4466 - 4480

Published: Aug. 3, 2021

Corals from the northern Red Sea, in particular Gulf of Aqaba (GoA), have exceptionally high bleaching thresholds approaching >5℃ above their maximum monthly mean (MMM) temperatures. These elevated are thought to be due historical selection, as corals passed through warmer Southern Sea during recolonization Arabian Sea. To test this hypothesis, we determined thermal tolerance GoA versus central (CRS) Stylophora pistillata using multi-temperature acute stress assays determine thresholds. Relative and CRS were indeed similar (~7℃ MMM). However, absolute on average 3℃ those corals. explore molecular underpinnings, gene expression microbiome response coral holobiont. Transcriptomic responses differed markedly, with a strong symbiotic algae remarkably muted colonies. Concomitant this, algal genes showed temperature-induced corals, while exhibiting fixed (front-loading) Bacterial community composition changed dramatically under heat stress, whereas displayed stable assemblages. We interpret that resilient population tipping point contrast pattern consistently resistance cannot further attune. Such differences suggest distinct mechanisms may affect populations ocean warming.

Language: Английский

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Microbiome-mediated plasticity directs host evolution along several distinct time scales

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2020, Volume and Issue: 375(1808), P. 20190589 - 20190589

Published: Aug. 9, 2020

Host-associated microbiomes influence their host's fitness in myriad ways and can be viewed as a source of phenotypic plasticity. This plasticity may allow the host to accommodate novel environmental challenges thus evolutionary adaptation. As with other modalities phenomena such Baldwin effect genetic assimilation, microbiome-mediated adaptation by facilitating accelerating it, slowing it down, or even preventing it. The dynamics involved are likely more complex than those previously studied related plasticity, involve different processes on each time scale, acquired recognition newly associated microbes immune system single- multiple-generation scales, selection transmission between hosts, acting longer scales. To date, is unclear if how any these shape evolution. opinion piece article provides conceptual framework for considering which directs evolution concludes suggestions key experimental tests presented ideas. part theme issue 'The role microbiome evolution'.

Language: Английский

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