Metabolism of DMSP, DMS and DMSO by the cultivable bacterial community associated with the DMSP-producing dinoflagellate Scrippsiella trochoidea

Hatton, Angela D.; Shenoy, Damodar M.; Hart, Michael W.; Mogg, Andrew O.M.; Green, David H.

doi:10.1007/s10533-012-9702-7

Cited by 58 publications

(53 citation statements)

References 60 publications

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“…The authors suggested that this mechanism could also potentially be responsible for the high DMS concentrations (up to 250 nmol L −1 ) measured in Antarctic melt ponds. The absence of DMS production from 13 C-DMSO in the melt ponds studied here may then reflect potential differences in microbial assemblages within melt ponds, as the metabolic ability to convert DMSO into DMS is not ubiquitous among bacterial communities (Hatton et al, 2012). In support of this hypothesis, it has been shown that between 70 and 78 % of the operational taxonomic units (OTU), a marker of microbial diversity, in Arctic and Southern Ocean surface water communities are unique to their region (Ghiglione et al, 2012).…”

Section: Source Of Dms Under Substrate Amended Conditionsmentioning

confidence: 97%

“…Vogt et al, 1997), members of the Roseobacter group (González et al, 1999), and mat-forming cyanobacteria (van Bergeijk and Stal, 1996). However, the ubiquity of this DMSO-to-DMS reduction pathway amongst bacterial assemblages has not been established (Hatton et al, 2012). A limited number of phytoplankton species could also be involved in the reduction of DMSO into DMS (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Dimethyl sulfide dynamics in first-year sea ice melt ponds in the Canadian Arctic Archipelago

et al. 2018

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Abstract. Melt pond formation is a seasonal pan-Arctic process. During the thawing season, melt ponds may cover up to 90 % of the Arctic first-year sea ice (FYI) and 15 to 25 % of the multi-year sea ice (MYI). These pools of water lying at the surface of the sea ice cover are habitats for microorganisms and represent a potential source of the biogenic gas dimethyl sulfide (DMS) for the atmosphere. Here we report on the concentrations and dynamics of DMS in nine melt ponds sampled in July 2014 in the Canadian Arctic Archipelago. DMS concentrations were under the detection limit (< 0.01 nmol L −1 ) in freshwater melt ponds and increased linearly with salinity (r s = 0.84, p ≤ 0.05) from ∼ 3 up to ∼ 6 nmol L −1 (avg. 3.7 ± 1.6 nmol L −1 ) in brackish melt ponds. This relationship suggests that the intrusion of seawater in melt ponds is a key physical mechanism responsible for the presence of DMS. Experiments were conducted with water from three melt ponds incubated for 24 h with and without the addition of two stable isotope-labelled precursors of DMS (dimethylsulfoniopropionate), (D6-DMSP) and dimethylsulfoxide ( 13 C-DMSO). Results show that de novo biological production of DMS can take place within brackish melt ponds through bacterial DMSP uptake and cleavage. Our data suggest that FYI melt ponds could represent a reservoir of DMS available for potential flux to the atmosphere. The importance of this ice-related source of DMS for the Arctic atmosphere is expected to increase as a response to the thinning of sea ice and the areal and temporal expansion of melt ponds on Arctic FYI.

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Section: Source Of Dms Under Substrate Amended Conditionsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Dimethyl sulfide dynamics in first-year sea ice melt ponds in the Canadian Arctic Archipelago

et al. 2018

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“…For example, in the oxygen minimum zone (OMZ) of the Eastern Tropical North Pacific, particles contribute 100% of the activity reducing nitrate to nitrite and 53 to 85% of N 2 production by denitrification and anammox (167). P cycling processes such as eDNA secretion (168,169) and particulate organic phosphorus degradation (153,170,171) are enhanced on marine particles, as are microbial S cycling activities such as sulfate reduction (133,141,147,153,172), sulfur oxidation (133,(146)(147)(148)153), and organic S compound (e.g., the algal osmolyte dimethylsulfoniopropionate [DMSP]) transformation and degradation (153,(173)(174)(175). As noted above, surface-and particle-associated microorganisms also contribute substantially to marine iron cycling processes, such as iron oxidation and reduction (78, 147, 176-178), siderophore-mediated iron solubilization and uptake (153,(179)(180)(181), iron transport among different oceanic environments (182), and biocorrosion (18, 69, 72, 81).…”

Section: Physiological Challenges and Deleterious Effects Of Microbiamentioning

confidence: 99%

Microbial Surface Colonization and Biofilm Development in Marine Environments

Dang

Lovell

2016

Microbiol Mol Biol Rev

829

636

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SUMMARYBiotic and abiotic surfaces in marine waters are rapidly colonized by microorganisms. Surface colonization and subsequent biofilm formation and development provide numerous advantages to these organisms and support critical ecological and biogeochemical functions in the changing marine environment. Microbial surface association also contributes to deleterious effects such as biofouling, biocorrosion, and the persistence and transmission of harmful or pathogenic microorganisms and their genetic determinants. The processes and mechanisms of colonization as well as key players among the surface-associated microbiota have been studied for several decades. Accumulating evidence indicates that specific cell-surface, cell-cell, and interpopulation interactions shape the composition, structure, spatiotemporal dynamics, and functions of surface-associated microbial communities. Several key microbial processes and mechanisms, including (i) surface, population, and community sensing and signaling, (ii) intraspecies and interspecies communication and interaction, and (iii) the regulatory balance between cooperation and competition, have been identified as critical for the microbial surface association lifestyle. In this review, recent progress in the study of marine microbial surface colonization and biofilm development is synthesized and discussed. Major gaps in our knowledge remain. We pose questions for targeted investigation of surface-specific community-level microbial features, answers to which would advance our understanding of surface-associated microbial community ecology and the biogeochemical functions of these communities at levels from molecular mechanistic details through systems biological integration.

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“…[102,103] Increased consumption of the DMSP D pool by bacteria would affect not only the DMSP T concentrations but also reduce DMS production from the cleavage pathways. Bacterial transformation of DMS to dimethyl sulfoxide (DMSO) has been identified as the removal pathway for the majority of DMS, [104] further reducing the DMS concentrations during the greater bacterial activity at higher pCO 2 .…”

Section: à60mentioning

confidence: 99%

Ocean acidification has different effects on the production of dimethylsulfide and dimethylsulfoniopropionate measured in cultures of Emiliania huxleyi and a mesocosm study: a comparison of laboratory monocultures and community interactions

et al. 2016

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Environmental context. Approximately 25 % of CO 2 released to the atmosphere by human activities has been absorbed by the oceans, resulting in ocean acidification. We investigate the acidification effects on marine phytoplankton and subsequent production of the trace gas dimethylsulfide, a major route for sulfur transfer from the oceans to the atmosphere. Increasing surface water CO 2 partial pressure (pCO 2 ) affects the growth of phytoplankton groups to different degrees, resulting in varying responses in community production of dimethylsulfide.Abstract. The human-induced rise in atmospheric carbon dioxide since the industrial revolution has led to increasing oceanic carbon uptake and changes in seawater carbonate chemistry, resulting in lowering of surface water pH. In this study we investigated the effect of increasing CO 2 partial pressure (pCO 2 ) on concentrations of volatile biogenic dimethylsulfide (DMS) and its precursor dimethylsulfoniopropionate (DMSP), through monoculture studies and community pCO 2 perturbation. DMS is a climatically important gas produced by many marine algae: it transfers sulfur into the atmosphere and is a major influence on biogeochemical climate regulation through breakdown to sulfate and formation of subsequent cloud condensation nuclei (CCN). Overall, production of DMS and DMSP by the coccolithophore Emiliania huxleyi strain RCC1229 was unaffected by growth at 900 matm pCO 2 , but DMSP production normalised to cell volume was 12 % lower at the higher pCO 2 treatment. These cultures were compared with community DMS and DMSP production during an elevated pCO 2 mesocosm experiment with the aim of studying E. huxleyi in the natural environment. Results contrasted with the culture experiments and showed reductions in community DMS and DMSP concentrations of up to 60 and 32 % respectively at pCO 2 up to 3000 matm, with changes attributed to poorer growth of DMSP-producing nanophytoplankton species, including E. huxleyi, and potentially increased microbial consumption of DMS and dissolved DMSP at higher pCO 2 . DMS and DMSP production differences between culture and community likely arise from pH affecting the inter-species responses between microbial producers and consumers.

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Metabolism of DMSP, DMS and DMSO by the cultivable bacterial community associated with the DMSP-producing dinoflagellate Scrippsiella trochoidea

Cited by 58 publications

References 60 publications

Dimethyl sulfide dynamics in first-year sea ice melt ponds in the Canadian Arctic Archipelago

Dimethyl sulfide dynamics in first-year sea ice melt ponds in the Canadian Arctic Archipelago

Microbial Surface Colonization and Biofilm Development in Marine Environments

Ocean acidification has different effects on the production of dimethylsulfide and dimethylsulfoniopropionate measured in cultures of Emiliania huxleyi and a mesocosm study: a comparison of laboratory monocultures and community interactions

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