Phylogenetic survey of metabolically active microbial communities associated with the deep-sea coral Lophelia pertusa from the Apulian plateau, Central Mediterranean Sea

Yakimov, Michail M.; Cappello, Simone; Crisafi, E.; Tursi, Angelo; Savini, Alessandra; Corselli, Cesare; Scarfi, Simona; Giuliano, Laura

doi:10.1016/j.dsr.2005.07.005

Cited by 100 publications

(105 citation statements)

References 43 publications

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“…The selection of such bacterial associates could be induced by nutritional coral-microbe relationships, as coral exudates are known to attract specific, yet diverse populations of organo-heterotrophs (Ritchie and Smith, 2004;Allers et al, 2008), or by specific chemical mediation by the coral host (Kelman et al, 2006;Ritchie, 2006). Our findings are consistent with results from other studies that found specific associations between bacteria and their coral hosts (Rohwer et al, 2002;Bourne and Munn, 2005;Penn et al, 2006;Yakimov et al, 2006;Webster and Bourne, 2007). This indicates that a clear distinction in the bacterial community structure may exist between the different microbial habitats associated with scleractinian CWCs, such as Lophelia pertusa.…”

Section: Resultssupporting

confidence: 90%

“…While Yakimov et al (2006) showed that living specimens of the stony CWC Lophelia pertusa in the Mediterranean harbor, specific bacterial communities that are different from those of dead coral material or sediments, another investigation even showed the spatial stability of CWC-microbe associations with an Antarctic soft coral across an environmental impact gradient (Webster and Bourne, 2007). Characteristic bacterial assemblages were also found in an Alaskan octocoral, but exhibited minimal influence of transient water-column microbes (Penn et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Inter- and intra-habitat bacterial diversity associated with cold-water corals

et al. 2009

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The discovery of large ecosystems of cold-water corals (CWC), stretching along continental margins in depths of hundreds to thousands of meters, has raised many questions regarding their ecology, biodiversity and relevance as deep-sea hard-ground habitat. This study represents the first investigation that explicitly targets bacterial diversity from distinct microbial habitats associated with the cosmopolitan reef-building coral Lophelia pertusa, and also compares natural (fjord) and controlled (aquarium) conditions. Coral skeleton surface, coral mucus, ambient seawater and reef sediments clearly showed habitat-specific differences in community structure and operational taxonomic unit (OTU) number. Especially in the natural environment, bacterial communities associated with coral-generated habitats were significantly more diverse than those present in the surrounding, non-coral habitats, or those in artificial coral living conditions (fjord vs aquarium). These findings strongly indicate characteristic coral-microbe associations and, furthermore, suggest that the variety of coral-generated habitats within reef systems promotes microbial diversity in the deep ocean.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Inter- and intra-habitat bacterial diversity associated with cold-water corals

et al. 2009

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“…Thus, Yakimov et al (2006), for example, recently found metabolically active microbial communities associated with deep-water corals in the Mediterranean. Also recent research of the microbial food chain surrounding the coral reefs off Mid-Norway, have provided some interesting new findings.…”

Section: The Deep-water Coral Reef (Dwcr) Enigmamentioning

confidence: 96%

“…Only further detailed studies of the reefs will be able to answer these important questions (Jensen et al, 2008). Despite the fact that no nutritional symbiosis involving chemosynthesis have been documented on deep-water coral reefs, other than 'unassigned' primary producers affiliated with chemoautotrophs and methanotrophs utilizing H 2 S, NO 2 -, CH 4 , and possibly iodide (Penn et al, 2006;Yakimov et al, 2006;Jensen et al, 2008), it was recently concluded that hydrocarbons probably stimulate the growth, the high biodiversity, and biodensity, including the rare purple octocoral found on the pockmark-Lophelia reef, MRR (Morvin Reference Reef), at Morvin (see Hovland, 2008, and Fig. 19).…”

Section: The Deep-water Coral Reef (Dwcr) Enigmamentioning

confidence: 99%

The Geomorphology and Nature of Seabed Seepage Processes

Hovland¹

2012

Bathymetry and Its Applications

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“…Ducklow and Figure 1 Experimental set-up for experiments with various composition of experimental seawater: Natural seawater (NSW1 and NSW2), Cell-and virus-free ultrafiltrate (UF), UF + viral enrichment (VE), UF + prokaryotic enrichment (PE) Mitchell, 1979a; Koren and Rosenberg, 2006). A first insight into the bacterial community structure is available for L. pertusa (Yakimov et al, 2006;Kellogg et al, 2009;Neulinger et al, 2008;Schöttner et al, 2009), M. oculata (Hansson et al, 2009) and CWC sediments (Jensen et al, 2008a, b).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of nutrients, total organic carbon, prokaryotes and viruses in onboard incubations of cold-water corals

et al. 2011

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Abstract. The potential influence of the cold-water corals (CWCs) Lophelia pertusa and Madrepora oculata on the dynamics of inorganic nutrient and total organic carbon (TOC) concentrations and the abundances of prokaryotes and viruses in bottom water was assessed in onboard incubation experiments. Ammonium, nitrite, dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP) and TOC concentrations and N:P ratios were typically higher in incubation water with corals than in controls, whereas nitrate concentrations did not reveal a clear trend. Mucus release (normalized to coral surface) was estimated by the net increase rate of TOC concentrations and averaged 23 ± 6 mg C m −2 h −1 for L. pertusa and 21 ± 8 mg C m −2 h −1 for M. oculata. Prokaryotic and viral abundance and turnover rates were typically stimulated in incubation water with corals. This estimated prokaryotic stimulation averaged 6.0 ± 3.0 × 10 9 cells m −2 h −1 for L. pertusa and 8.4 ± 2.9 × 10 9 cells m −2 h −1 for M. oculata, whereas the estimated viral stimulation averaged 15.6 ± 12.7 × 10 9 particles m −2 h −1 for L. pertusa and 4.3 ± 0.4 × 10 9 particles m −2 h −1 M. oculata. Our data suggest that prokaryotes and viruses are released from corals and that nutrient and mucus release enhanced prokaryotic and viral production. The result of this stimulation could be a fuelling of bottom water in CWC reefs with nutrients and organic matter and consequently an enhancement of microbe-mediated processes.

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Phylogenetic survey of metabolically active microbial communities associated with the deep-sea coral Lophelia pertusa from the Apulian plateau, Central Mediterranean Sea

Cited by 100 publications

References 43 publications

Inter- and intra-habitat bacterial diversity associated with cold-water corals

Inter- and intra-habitat bacterial diversity associated with cold-water corals

The Geomorphology and Nature of Seabed Seepage Processes

Dynamics of nutrients, total organic carbon, prokaryotes and viruses in onboard incubations of cold-water corals

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