Rapid adaptive responses to climate change in corals

Nature Climate Change, Journal Year: 2017, Volume and Issue: 7(9), P. 627 - 636

Published: Sept. 1, 2017

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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Multi-domain probiotic consortium as an alternative to chemical remediation of oil spills at coral reefs and adjacent sites

Microbiome, Journal Year: 2021, Volume and Issue: 9(1)

Published: May 21, 2021

Abstract Background Beginning in the last century, coral reefs have suffered consequences of anthropogenic activities, including oil contamination. Chemical remediation methods, such as dispersants, can cause substantial harm to corals and reduce their resilience stressors. To evaluate impacts contamination find potential alternative solutions chemical we conducted a mesocosm experiment with fire Millepora alcicornis , which is sensitive environmental changes. We exposed M . realistic oil-spill scenario applied an innovative multi-domain bioremediator consortium (bacteria, filamentous fungi, yeast) dispersant (Corexit® 9500, one most widely used dispersants), assess effects on host health host-associated microbial communities. Results The selected helped mitigate oil, substantially degrading polycyclic aromatic n-alkane fractions maintaining physiological integrity corals. Exposure Corexit 9500 negatively impacted physiology altered coral-associated community. After exposure, abundances certain bacterial genera Rugeria Roseovarius increased, previously reported stressed or diseased also identified several bioindicators microbiome. impact community was far greater than alone, killing after only 4 days exposure flow-through system. In treatments action could not be observed directly because extreme toxicity its associated Conclusions Our results emphasize importance investigating microbiome order detect role mitigation conservation tools. dispersants were more damaging should close reefs. This study aid decision-making minimize negative

Language: Английский

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Beyond Restoration: Coral Microbiome Biotechnology

Coral reefs of the world, Journal Year: 2025, Volume and Issue: unknown, P. 215 - 234

Published: Jan. 1, 2025

Language: Английский

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Ecological and biotechnological importance of secondary metabolites produced by coral‐associated bacteria

Journal of Applied Microbiology, Journal Year: 2020, Volume and Issue: 129(6), P. 1441 - 1457

Published: July 6, 2020

Symbiotic relationships between corals and their associated micro‐organisms are essential to maintain host homeostasis. Coral‐associated bacteria (CAB) can have different beneficial roles in the coral metaorganism, such as metabolizing nutrients for protecting from pathogens. Many CAB exert these functions via secondary metabolites, which include antibacterial, antifouling, antitumour, antiparasitic antiviral compounds. This review describes how analysis of has led discovery metabolites with potential biotechnological applications. The most commonly found types antimicrobial antibiofilm compounds, emphasized described. Recently developed methods that be applied enhance culturing shallow‐water reefs less‐studied deep‐sea also discussed. Last, we suggest combined use meta‐omics innovative growth‐diffusion techniques vastly improve novel compounds environments.

Language: Английский

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Microbiomes of stony and soft deep-sea corals share rare core bacteria

Microbiome, Journal Year: 2019, Volume and Issue: 7(1)

Published: June 10, 2019

Numerous studies have shown that bacteria form stable associations with host corals and focused on identifying conserved "core microbiomes" of bacterial associates inferred to be serving key roles in the coral holobiont. Because tend focus only stony (order Scleractinia) or soft Alcyonacea), it is currently unknown if there are shared by both. A meta-analysis was done 16S rRNA amplicon data from multiple generated via identical methodology allow direct comparisons across seven deep-sea corals, including both species: Anthothela grandiflora, sp., Lateothela Lophelia pertusa, Paramuricea placomus, Primnoa pacifica, resedaeformis. Twenty-three operational taxonomic units (OTUs) were consistently present greater than 50% samples. Seven sequence variants (ASVs), five which corresponded a OTU, 30% samples species. majority sequences had close matches previously identified coral-associated bacteria. While known dominate tropical temperate microbiomes, Endozoicomonas extremely rare absent these corals. An OTU associated Lo. pertusa this study most similar those shallow-water while an spp. gorgonians. Bacterial been at level class Anthozoa (i.e., found shallow deep). These therefore hypothesized play important symbiotic highlighted for targeted future study. include taxa potential nitrogen sulfur cycling, detoxification, hydrocarbon degradation. There also some overlap kit contaminants need resolved. Rarely detected partitioned whether coral, finer clustering pattern reflects hosts' phylogeny.

Language: Английский

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The Red Sea: Environmental Gradients Shape a Natural Laboratory in a Nascent Ocean

Coral reefs of the world, Journal Year: 2019, Volume and Issue: unknown, P. 1 - 10

Published: Jan. 1, 2019

Language: Английский

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Evolutionary “Experiments” in Symbiosis: The Study of Model Animals Provides Insights into the Mechanisms Underlying the Diversity of Host–Microbe Interactions

BioEssays, Journal Year: 2019, Volume and Issue: 41(10)

Published: May 17, 2019

Current work in experimental biology revolves around a handful of animal species. Studying only few organisms limits science to the answers that those can provide. Nature has given us an overwhelming diversity animals study, and recent technological advances have greatly accelerated ability generate genetic genomic tools develop model for research on host–microbe interactions. With help such models authors therefore hope construct more complete picture mechanisms underlie crucial interactions metaorganism (entity consisting eukaryotic host with all its associated microbial partners). As reviewed here, new knowledge found across kingdom will provide insights into how develop, evolve, succumb disease.

Language: Английский

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Development of a free radical scavenging bacterial consortium to mitigate oxidative stress in cnidarians

Microbial Biotechnology, Journal Year: 2021, Volume and Issue: 14(5), P. 2025 - 2040

Published: July 14, 2021

Summary Corals are colonized by symbiotic microorganisms that profoundly influence the animal’s health. One noted symbiont is a single‐celled alga (in dinoflagellate family Symbiodiniaceae ), which provides coral with most of its fixed carbon. Thermal stress increases production reactive oxygen species (ROS) during photosynthesis. ROS can both damage algal symbiont’s photosynthetic machinery and inhibit repair, causing positive feedback loop for toxic accumulation ROS. If not scavenged antioxidant network, excess may trigger signaling cascade ending host disassociating in process known as bleaching. We use Exaiptasia diaphana model corals constructed consortium comprised E. –associated bacteria capable neutralizing identified six strains high free radical scavenging (FRS) ability belonging to families Alteromonadaceae , Rhodobacteraceae Flavobacteriaceae Micrococcaceae . In parallel, we established low FRS isolates consisting genetically related strains. Bacterial whole genome sequences were used identify key pathways

Language: Английский

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Bacterial community response to chronic heavy metal contamination in marine sediments of the East China Sea

Environmental Pollution, Journal Year: 2022, Volume and Issue: 307, P. 119280 - 119280

Published: April 29, 2022

Language: Английский

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