Eukarya associated with the stony coral Oculina patagonica from the Mediterranean Sea

Rubio-Portillo, Esther; Souza-Egipsy, Virginia; Ascaso, Carmen; Ríos, Asunción de los; Ramos‐Esplá, Alfonso A.; Antón, Josefa

doi:10.1016/j.margen.2014.06.002

Cited by 8 publications

(5 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microbial cells were clearly observed in the in the mucus and tissue of O. patagonica by TEM. Previously, our research group also detected by scanning electron microscopy (SEM) the presence of endolithic microorganisms in the skeletal matrix of O. patagonica (Rubio‐Portillo et al ., ). Morphological diverse microbial aggregates were observed in the mucus layer (Fig.…”

Section: Resultssupporting

confidence: 87%

Structure and temporal dynamics of the bacterial communities associated to microhabitats of the coral Oculina patagonica

Rubio-Portillo

Santos

Martínez‐García

et al. 2016

Environmental Microbiology

Self Cite

View full text Add to dashboard Cite

Originality-significance statement: Corals are known to contain a diverse microbiota that plays a paramount role in the physiology and health of holobiont. However, few studies have addressed the variability of bacterial communities within the coral host. This is precisely the central point of our work, which makes it different from previous characterizations of coral microbiotas. We have characterized the bacterial community composition from mucus, tissue and skeleton of the coral Oculina patagonica, seasonally and at two locations in the Western Mediterranean Sea, to further understand how environmental conditions and the coral microbiome structure are related.This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as an 'Accepted Article', doi: 10.1111/1462-2920.13548This article is protected by copyright. All rights reserved. 2 AbstractCorals are known to contain a diverse microbiota that plays a paramount role in the physiology and health of holobiont. However, few studies have addressed the variability of bacterial communities within the coral host. In this study, bacterial community composition from the mucus, tissue and skeleton of the scleractinian coral Oculina patagonica were investigated seasonally at two locations in the Western Mediterranean Sea, to further understand how environmental conditions and the coral microbiome structure are related.We used denaturing gradient gel electrophoresis in combination with next-generation sequencing and electron microscopy to characterize the bacterial community. The bacterial communities were significantly different among coral compartments, and coral tissue displayed the greatest changes related to environmental conditions and coral health status.Species belonging to the Rhodobacteraceae and Vibrionaceae families form part of O.patagonica tissues core microbiome and may play significant roles in the nitrogen cycle.Furthermore, sequences related to the coral pathogens, Vibrio mediterranei and Vibrio coralliilyticus, were detected not only in bleached corals but also in healthy ones, even during cold months. This fact opens a new view onto unveiling the role of pathogens in the development of coral diseases in the future.

show abstract

Section: Resultssupporting

confidence: 87%

Structure and temporal dynamics of the bacterial communities associated to microhabitats of the coral Oculina patagonica

Rubio-Portillo

Santos

Martínez‐García

et al. 2016

Environmental Microbiology

Self Cite

View full text Add to dashboard Cite

show abstract

“…In contrast, abundant literature documents depth-specific physiology and morphology for various Mediterranean 6 , 19 , 23 and tropical coral species 19 , 39 – 41 including depth-dependent adjustment of photosymbiont species 42 , 43 or even symbiont genus 44 , 45 . However, in the present study, colonies of O. patagonica from both depths hosted Breviolum psygmophilum , as previously isolated from shallow O. patagonica and dominant in Mediterranean corals 46 , 47 .…”

Section: Discussionsupporting

confidence: 52%

Selection of mesophotic habitats by Oculina patagonica in the Eastern Mediterranean Sea following global warming

Martinez

Bellworthy

Ferrier‐Pagés

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Globally, species are migrating in an attempt to track optimal isotherms as climate change increasingly warms existing habitats. Stony corals are severely threatened by anthropogenic warming, which has resulted in repeated mass bleaching and mortality events. Since corals are sessile as adults and with a relatively old age of sexual maturity, they are slow to latitudinally migrate, but corals may also migrate vertically to deeper, cooler reefs. Herein we describe vertical migration of the Mediterranean coral Oculina patagonica from less than 10 m depth to > 30 m. We suggest that this range shift is a response to rapidly warming sea surface temperatures on the Israeli Mediterranean coastline. In contrast to the vast latitudinal distance required to track temperature change, this species has migrated deeper where summer water temperatures are up to 2 °C cooler. Comparisons of physiology, morphology, trophic position, symbiont type, and photochemistry between deep and shallow conspecifics revealed only a few depth-specific differences. At this study site, shallow colonies typically inhabit low light environments (caves, crevices) and have a facultative relationship with photosymbionts. We suggest that this existing phenotype aided colonization of the mesophotic zone. This observation highlights the potential for other marine species to vertically migrate.

show abstract

“…Among them, the genome of Breviolum minutum Mf1.05b (also known as Symbiodinium minutum), which belongs to clade B, exhibited the highest read recruitment rates. This result was consistent with previous ndings that identi ed Symbiodinium type B1 as the primary clade in O. patagonica [25]. It is also consistent with prior investigations in other coral species, demonstrating the concurrent association of corals with multiple Symbiodiniaceae, with a prevailing clone [65].…”

Section: Oculina Patagonica Holobiontsupporting

confidence: 93%

“…In this work, we conducted a metagenomic analysis of the entire Oculina patagonica microbiome. This coral, known as an opportunistic colonizer, is currently expanding throughout the Mediterranean Sea coast [25][26][27]. The expansion of this coral is attributed in part to its broad tolerance for varying light levels and trophic conditions [28,29], as well as its heightened thermal resilience compared to other scleractinian corals [27,30].…”

Section: Introductionmentioning

confidence: 99%

Community shifts in the coral Oculina patagonica holobiont in response to confinement, temperature and vibrio infections

Martin-Cuadrado,

Rubio-Portillo,

Antón

2024

Preprint

Self Cite

View full text Add to dashboard Cite

Background Extensive research on the diversity and functional roles of the microorganisms associated with reef-building corals has been promoted as a consequence of the rapid global decline of coral reefs attributed to climate change. Several studies have highlighted the importance of coral-associated algae (Symbiodinium) and bacteria and their potential roles in promoting coral host fitness and survival. However, the complex coral holobiont extends beyond these components to encompass other entities such as protists, fungi, and viruses. While each constituent has been individually investigated in corals, a comprehensive understanding of their collective roles is imperative for a holistic comprehension of coral health and resilience.Results A metagenomic analysis was performed to investigate the entire microbiome of the coral Oculina patagonica under various stress conditions, including aquaria confinement, heat stress, and Vibrio infections. Results revealed significant shifts in the abundances and richness of dominant bacterial phyla within the microbiome. In general, aquaria confinement led to an increase in Rhodobacteraceae, Flavobacteraceae, and Vibrionaceae families, accompanied by a decrease in Streptomycetaceae. Concurrently, it was observed that both the abundance and richness of microeukaryotic species significantly declined. Some fungi such as Aspergillus, Fusarium and Rhizofagus genera decrease (or increased, in the case of Saccharomyces). Furthermore, our analysis also identified a reduction in genes associated with antimicrobial compound production by the coral itself, as well as by Symbiodinium and fungi.Conclusion Our findings suggest that the interplay between microeukaryotic and prokaryotic components of the coral holobiont may be disrupted by stress conditions, such as confinement, increase of seawater temperature or Vibrio infection, leading to a dysbiosis in the global microbial community that may increase coral susceptibility to diseases. Further, microeukaryotic community seems to exert influence on the prokaryotic community dynamics, possibly through predation or the production of secondary metabolites with anti-bacterial activity.

show abstract

Eukarya associated with the stony coral Oculina patagonica from the Mediterranean Sea

Cited by 8 publications

References 48 publications

Structure and temporal dynamics of the bacterial communities associated to microhabitats of the coral Oculina patagonica

Structure and temporal dynamics of the bacterial communities associated to microhabitats of the coral Oculina patagonica

Selection of mesophotic habitats by Oculina patagonica in the Eastern Mediterranean Sea following global warming

Community shifts in the coral Oculina patagonica holobiont in response to confinement, temperature and vibrio infections

Contact Info

Product

Resources

About