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Efficient carbon an...
Efficient carbon and nitrogen transfer from marine diatom aggregates to colonizing bacterial groups
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- Arandia-Gorostidi, Nestor (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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Berthelot, H. (author)
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Calabrese, F. (author)
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Stryhanyuk, H. (author)
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- Klawonn, Isabell, 1983- (author)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Leibniz Institute for Baltic Sea Research (IOW), Germany
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Iversen, M. (author)
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- Nahar, Nurun (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,Institutionen för växtbiologi,Department of Plant Biology,University of Gothenburg
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- Ploug, Helle (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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- Ploug, Helle (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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Musat, N. (author)
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Grossart, Hans-Peter (author)
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(creator_code:org_t)
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- 2022-09-02
- 2022
- English.
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In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 12:1
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https://doi.org/10.1...
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Abstract
Subject headings
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- Bacterial degradation of sinking diatom aggregates is key for the availability of organic matter in the deep-ocean. Yet, little is known about the impact of aggregate colonization by different bacterial taxa on organic carbon and nutrient cycling within aggregates. Here, we tracked the carbon (C) and nitrogen (N) transfer from the diatom Leptocylindrus danicus to different environmental bacterial groups using a combination of C-13 and N-15 isotope incubation (incubated for 72 h), CARD-FISH and nanoSIMS single-cell analysis. Pseudoalteromonas bacterial group was the first colonizing diatom-aggregates, succeeded by the Alteromonas group. Within aggregates, diatom-attached bacteria were considerably more enriched in C-13 and N-15 than non-attached bacteria. Isotopic mass balance budget indicates that both groups showed comparable levels of diatom C in their biomass, accounting for 19 +/- 7% and 15 +/- 11%, respectively. In contrast to C, bacteria of the Alteromonas groups showed significantly higher levels of N derived from diatoms (77 +/- 28%) than Pseudoalteromonas (47 +/- 17%), suggesting a competitive advantage for Alteromonas in the N-limiting environments of the deep-sea. Our results imply that bacterial succession within diatom aggregates may largely impact taxa-specific C and N uptake, which may have important consequences for the quantity and quality of organic matter exported to the deep ocean.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- dissolved organic-carbon
- oligonucleotide probes
- attached bacteria
- enzyme-activities
- sinking velocity
- phytoplankton
- colonization
- growth
- rates
- snow
- Science & Technology - Other Topics
Publication and Content Type
- ref (subject category)
- art (subject category)
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