Beyond the Symbiodiniaceae: diversity and role of microeukaryotic coral symbionts

Bonacolta, Anthony M; Weiler, Bradley A.; Porta-Fitó, Teresa; Sweet, Michael; Keeling, Patrick J.; Campo, Javier del

doi:10.1007/s00338-023-02352-0

Cited by 10 publications

(6 citation statements)

References 128 publications

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“…The correlation might not be driven by one specific member of microbiome, but rather a consortium of changes that occur in multiple holobiont members. Several studies have found microbial dysbiosis occurring in multiple holobiont members, triggering a cascade of effects (Boilard et al, 2020;Claar et al, 2020;Connelly et al, 2022;Bonacolta et al, 2023;Gardner et al, 2023). Under this interpretation, the relationship between SCTLD and Symbiodiniaceae identity may be the result of functional changes in the microbiome.…”

Section: Limitations and Future Directionsmentioning

confidence: 99%

Stony coral tissue loss disease: a review of emergence, impacts, etiology, diagnostics, and intervention

Papke,

Carreiro,

Dennison

et al. 2024

Front. Mar. Sci.

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Stony coral tissue loss disease (SCTLD) is destructive and poses a significant threat to Caribbean coral reef ecosystems. Characterized by the acute loss of coral tissue, SCTLD has impacted over 22 stony coral species across the Caribbean region, leading to visible declines in reef health. Based on the duration, lethality, host range, and spread of this disease, SCTLD is considered the most devastating coral disease outbreak ever recorded. Researchers are actively investigating the cause and transmission of SCTLD, but the exact mechanisms, triggers, and etiological agent(s) remain elusive. If left unchecked, SCTLD could have profound implications for the health and resilience of coral reefs worldwide. To summarize what is known about this disease and identify potential knowledge gaps, this review provides a holistic overview of SCTLD research, including species susceptibility, disease transmission, ecological impacts, etiology, diagnostic tools, host defense mechanisms, and treatments. Additionally, future research avenues are highlighted, which are also relevant for other coral diseases. As SCTLD continues to spread, collaborative efforts are necessary to develop effective strategies for mitigating its impacts on critical coral reef ecosystems. These collaborative efforts need to include researchers from diverse backgrounds and underrepresented groups to provide additional perspectives for a disease that requires creative and urgent solutions.

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Section: Limitations and Future Directionsmentioning

confidence: 99%

Stony coral tissue loss disease: a review of emergence, impacts, etiology, diagnostics, and intervention

Papke,

Carreiro,

Dennison

et al. 2024

Front. Mar. Sci.

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“…Other bacteria commonly found within P. clavata include Alphaproteobacteria, Betaproteobacteria, and Actinobacteria (Vezzulli et al, 2013). Despite the research into the bacterial community found in P. clavata throughout the Mediterranean Sea, there has been no research into the microeukaryotic community of this coral which constitutes a significant portion of the microbial diversity in other corals and may contribute significantly to holobiont fitness in a changing climate (Bonacolta et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Differential apicomplexan presence predicts thermal stress mortality in the Mediterranean coral Paramuricea clavata

Bonacolta,

Miravall,

Gómez‐Gras

et al. 2023

Environmental Microbiology

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Paramuricea clavata is an ecosystem architect of the Mediterranean temperate reefs that is currently threatened by episodic mass mortality events related to global warming. The microbiome may play an active role in the thermal stress susceptibility of corals, potentially holding the answer as to why corals show differential sensitivity to heat stress. To investigate this, the prokaryotic and eukaryotic microbiome of P. clavata collected from around the Mediterranean was characterised before experimental heat stress to determine if its microbial composition influences the thermal response of the holobiont. We found that members of P. clavata's microeukaryotic community were significantly correlated with thermal stress sensitivity. Syndiniales from the Dino‐Group I Clade 1 were significantly enriched in thermally resistant corals, while the apicomplexan corallicolids were significantly enriched in thermally susceptible corals. We hypothesise that P. clavata mortality following heat stress may be caused by a shift from apparent commensalism to parasitism in the corallicolid‐coral host relationship driven by the added stress. Our results show the potential importance of corallicolids and the rest of the microeukaryotic community of corals to understanding thermal stress response in corals and provide a useful tool to guide conservation efforts and future research into coral‐associated microeukaryotes.

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“…Research on microeukaryote diversity associated with corals has mainly concentrated on disease dynamics, where researchers use microscopy to identify microbes linked to corals. However, this technique has limitations due to its low throughput and targeted nature [32]. The use of non-targeted, culture-independent techniques such as high-throughput metabarcoding has enabled researchers to identify what they were searching for and previously unknown microorganisms in the environment [33].…”

Section: The Promise Of Meta-omics In Unraveling the Coral Holobiont ...mentioning

confidence: 99%

Revolutionizing Coral Research: The Power of Holo-Omics

Binsarhan¹

2023

Preprint

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This mini-review discusses the importance of microorganisms in various biological processes and the paradigm shift in researchers' perception of microorganisms' biology and genetics. Microorganisms are now understood to interact with their associated microorganisms, and advanced sequencing technology is used to study these interactions. The article highlights the importance of careful study design to efficiently generate and integrate data derived from meta-omics approaches such as (meta)genomics, (meta)transcriptomics, (meta)proteomics, and (meta)metabolomics to fully explore the extent of interactions between host organisms and their associated microbiota. The article also discusses the usefulness of metabarcoding and metagenomics in studying coral holobiont diversity and composition. While metabarcoding can comprehensively explore the genetic diversity of various biological taxa, it has limitations in classifying prokaryotes based on 16S rRNA amplicons. On the other hand, metagenomics generates vast amounts of short reads sequencing data that can be used to examine microbial diversity with greater precision and predict the possible functions of the gene set that is presented in the sample. However, the ability to link species to their functional capabilities is challenging, especially for microbes with uncertain evolutionary relationships, hidden microbes, and microeukaryotes. Finally, the article highlights the potential usefulness of these approaches in conservation biology and molecular and environmental science.

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Beyond the Symbiodiniaceae: diversity and role of microeukaryotic coral symbionts

Cited by 10 publications

References 128 publications

Stony coral tissue loss disease: a review of emergence, impacts, etiology, diagnostics, and intervention

Stony coral tissue loss disease: a review of emergence, impacts, etiology, diagnostics, and intervention

Differential apicomplexan presence predicts thermal stress mortality in the Mediterranean coral Paramuricea clavata

Revolutionizing Coral Research: The Power of Holo-Omics

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