How does heat stress affect sponge microbiomes? Structure and resilience of microbial communities of marine sponges from different habitats

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 9

Published: Jan. 19, 2023

Introduction Sponges are key components of marine benthic communities, providing many ecosystem functions and establishing close relationships with microorganisms, conforming the holobiont. These symbiotic microbiotas seem to be host species-specific highly diverse, playing roles in their sponge host. The effects elevated seawater temperature on sponges microbiota still poorly known, whether from polar areas more sensitive these impacts respect temperate tropical species is totally unknown. Methods We analyzed microbiomes different natural habitat after exposure heat stress aquaria by 16S rRNA amplicon sequencing (1) characterize covering a latitudinal gradient (polar, environments), (2) asses thermal microbial communities. Results Bacterial communities’ structure was also surrounding seawater. core microbiome maintained most stress, although they would recover normal conditions previous remains yet further investigated. observed increased abundances transient bacteria unknown origin exposed stress. Discussion Some may opportunistic that benefit stress-associated dysregulation occupying new niches According our results, Antarctic waters could resilient than sponges. Both composition changes produced quite species-specific, thus, depend species. Under global change scenario, will probably those suffering therefore dramatic for ecosystems since fundamental part them.

Language: Английский

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Bacteria Associated with Benthic Invertebrates from Extreme Marine Environments: Promising but Underexplored Sources of Biotechnologically Relevant Molecules

Marine Drugs, Journal Year: 2022, Volume and Issue: 20(10), P. 617 - 617

Published: Sept. 29, 2022

Microbe–invertebrate associations, commonly occurring in nature, play a fundamental role the life of symbionts, even hostile habitats, assuming key importance for both ecological and evolutionary studies relevance biotechnology. Extreme environments have emerged as new frontier natural product chemistry search novel chemotypes microbial origin with significant biological activities. However, to date, main focus has been microbes from sediment seawater, whereas those associated biota received significantly less attention. This review therefore conceived summarize information on invertebrate–bacteria associations that are established extreme marine environments. After brief overview currently known their characteristics, report between extremophilic microorganisms macrobenthic organisms such habitats is provided. The second part deals biotechnologically relevant bioactive molecules involved establishing maintaining symbiotic associations.

Language: Английский

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Divergent morphological and microbiome strategies of two neighbor sponges to cope with low pH in Mediterranean CO2 vents

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 916, P. 170171 - 170171

Published: Jan. 19, 2024

Ocean Acidification (OA) profoundly impacts marine biochemistry, resulting in a net loss of biodiversity. Porifera are often forecasted as winner taxa, yet the strategies to cope with OA can vary and may generate diverse fitness status. In this study, microbial shifts based on V

Language: Английский

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The Microbial Ecology of Antarctic Sponges

Microbial Ecology, Journal Year: 2025, Volume and Issue: 88(1)

Published: May 17, 2025

Microbial communities in Antarctic marine sponges have distinct taxonomic and functional profiles due to low temperatures, seasonal days nights, geographic isolation. These sponge holobionts contribute nutrient cycling, structural habitat formation, benthic ecosystem resilience. We review holobiont knowledge, integrating culture-based molecular data across environmental gradients. Although microbiome exist for only a fraction of the region's 593 known species, these hosts support diverse symbionts spanning at least 63 bacterial, 5 archaeal, 6 fungal phyla, highlighting complexity ecological significance understudied polar microbiomes. A conserved core microbiome, dominated by Proteobacteria, Bacteroidetes, Nitrospinae, Planctomycetes, occurs sponges, alongside taxa shaped host identity, depth, environment. Metagenomic indicate microbial nitrogen chemoautotrophic carbon fixation, stress tolerance. Despite advances, major knowledge gaps remain, particularly deep-sea sub-Antarctic regions, along with challenges taxonomy, methodological biases, limited insights. identify key research priorities, including developing standardised methodologies, expanded sampling depth gradients, multi-omics metadata. provide tractable model investigating symbiosis, adaptation, processes one Earth's most rapidly changing environments.

Language: Английский

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Metagenomic and metatranscriptomic exploration of the Egyptian Red Sea sponge Theonella sp. associated microbial community

Marine Genomics, Journal Year: 2023, Volume and Issue: 70, P. 101032 - 101032

Published: April 19, 2023

Language: Английский

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Chemical and microbiological insights into two littoral Antarctic demosponge species: Haliclona (Rhizoniera) dancoi (Topsent 1901) and Haliclona (Rhizoniera) scotti (Kirkpatrick 1907)

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: Feb. 9, 2024

Introduction Antarctic Porifera have gained increasing interest as hosts of diversified associated microbial communities that could provide interesting insights on the holobiome system and its relation with environmental parameters. Methods The demosponge species Haliclona dancoi scotti were targeted for determination persistent organic pollutant (i. e., polychlorobiphenyls, PCBs, polycyclic aromatic hydrocarbons, PAHs) trace metal concentrations, along characterization prokaryotic by 16S rRNA next generation sequencing, to evaluate possible relationships between accumulation (e.g., a stress factor) community composition in sponges. To best our knowledge, this approach has been never applied before. Results Notably, both chemical microbiological data H. (a quite rare Ross Sea) are here reported first time, well PAHs Porifera. Both sponge generally contained higher amounts pollutants than surrounding sediment seawater, thus demonstrating their capability. structure communities, even if differing at order genus levels two species, was dominated Proteobacteria Bacteroidota (with Archaea abundances negligible) appeared sharp contrast inhabiting bulk environment. Discussions suggested some bacterial groups significantly (positively or negatively) correlated occurrence certain contaminants.

Language: Английский

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Shallow Hard-Bottom Benthic Assemblages of South Bay (Antarctic Peninsula): An Update 40 Years Later

Diversity, Journal Year: 2024, Volume and Issue: 16(3), P. 162 - 162

Published: March 5, 2024

This work completes and updates the information about diversity distribution of benthic assemblages in an Antarctic fjord (South Bay, Peninsula) 40 years after first only community-level study was conducted there. To determine community changes, a photographic survey at four sites with different substrate inclinations along bathymetric gradient 5–20 m depth. In total, 160 photoquadrats were analyzed, resulting total area m2. Sixty taxa represented by 12 phyla identified, which eight corresponded to animals. The remaining species macroalgae diatoms, both presenting highest coverages entire area. richness values obtained greater depths steepest slopes. Here, we discuss role inclination depth structure concerning possible variations presence frequency physical disturbances (e.g., ice disturbance sedimentation). abundances, densities, distributions all found are detailed, updating ecological data ecosystem this from previously published assessment decades ago. continent where rapid environmental changes being experienced due climate-induced processes, massive record diatoms striking absence sea urchin Sterechinus neumayeri, abundant previous records early 1980s.

Language: Английский

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Sponge functional roles in a changing world

Advances in marine biology, Journal Year: 2023, Volume and Issue: unknown, P. 27 - 89

Published: Jan. 1, 2023

Language: Английский

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Prokaryotic communities of the French Polynesian sponge Dactylospongia metachromia display a site-specific and stable diversity during an aquaculture trial

Antonie van Leeuwenhoek, Journal Year: 2024, Volume and Issue: 117(1)

Published: April 11, 2024

Dynamics of microbiomes through time are fundamental regarding survival and resilience their hosts when facing environmental alterations. As for marine species with commercial applications, such as sponges, assessing the temporal change prokaryotic communities allows us to better consider adaptation sponges aquaculture designs. The present study aims investigate factors shaping microbiome sponge Dactylospongia metachromia, in a context development French Polynesia, Rangiroa, Tuamotu archipelago. A approach targeting explants collected during farming trials revealed relative high stability diversity, meanwhile complementary biogeographical confirmed spatial specificity amongst samples at different longitudinal scales. Results from this additional analysis that differences might first be explained by changes (mainly temperature salinity), while no significant effect host phylogeny was observed. core community D. metachromia is thus characterized spatiotemporal constancy, which good prospect sustainable exploitation towards drug development. Indeed, across locations throughout process, evidenced our results, should go against negative influence translocation situ aquaculture.

Language: Английский

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Prokaryotic diversity in the sponges Mycale (Oxymycale) acerata (Kirkpatrick, 1907) and Dendrilla antarctica (Topsent, 1905) from two distant Antarctic marine areas: South Cove at Rothera Point (Adelaide Island, Western Antarctic Peninsula) and Thetys Bay (Terra Nova Bay, Ross Sea)

Deep Sea Research Part II Topical Studies in Oceanography, Journal Year: 2024, Volume and Issue: 216, P. 105391 - 105391

Published: June 1, 2024

Language: Английский

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