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Divergent transcrip...
Divergent transcriptional responses of Baltic Sea bacteria to forest and agriculture river loadings
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- Osbeck, Christofer M. G. (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS
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- Pontiller, Benjamin, MSc, 1985- (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS
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- Teikari, Jonna E (författare)
- University of Helsinki, Finland;University of Potsdam, Germany
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visa fler...
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- Traving, Sachia J (författare)
- University of Copenhagen, Denmark;University of British Columbia, Canada
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- Happel, Elisabeth M (författare)
- University of Copenhagen, Denmark
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- Henke, Britt (författare)
- University of California, USA
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- Huchaiah, Vimala (författare)
- University of Tartu, Estonia
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- Nilsson, Emelie (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS
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- Alneberg, Johannes (författare)
- KTH Royal Institute of Technology, Sweden
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- Lundin, Daniel, 1965- (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS
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- Sivonen, Kaarina (författare)
- University of Helsinki, Finland
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- Andersson, Anders F (författare)
- KTH Royal Institute of Technology, Sweden
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- Riemann, Lasse (författare)
- University of Copenhagen, Denmark
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- Middelboe, Mathias (författare)
- University of Copenhagen, Denmark
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- Kisand, Veljo (författare)
- University of Tartu, Estonia
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- Pinhassi, Jarone (författare)
- Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS
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(creator_code:org_t)
- Engelska.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Climate change is projected to induce substantial changes in precipitation patterns across the globe. In Northern Europe, precipitation is expected to increase more than the global average (particularly in northern Scandinavia), causing increased river runoff. The Baltic Sea is one of the largest brackish environments on earth with a catchment area that spans 14 countries, encompassing primarily forested areas and agricultural landscapes. Despite the acknowledged role of marine bacteria in nutrient cycling, there is a lack of knowledge in their metabolic responses to inorganic and organic nutrient loading from riverine runoff. We investigated the bacterial growth and gene expression responses in a mesocosm experiment in which river water from boreal forest- (enriched in humic substances) or agriculture-influenced catchment areas (enriched in nitrogen) were added to Baltic Proper water. The riverine nutrient input triggered extensive phytoplankton blooms and bacterial growth, most notably in the agriculture river treatment. Interestingly, bacterial gene expression analysis (metatranscriptomics) showed similar responses to agriculture and humic river inputs at the start of the experiment during phytoplankton development, but expression patterns diverged upon bloom senescence. This indicated that interactions between river nutrient loading and phytoplankton organic matter are important in regulating bacterial activities and responses at the molecular level. Notably, transcripts associated with phosphate metabolism were significantly enriched in the agriculture river treatment compared to the boreal forest river treatment, whereas transcripts related to nitrogen metabolism were significantly lower. The opposite pattern was observed in the boreal forest river water treatment. This suggests that bacterial transformations of organic matter and nutrient processing in coastal environments are sensitive to alterations in the precipitation-induced riverine runoff in a catchment area-dependent manner, which has implications for interpreting the ecosystem effects of globally changing precipitation patterns.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Nyckelord
- Marine bacteria
- nutrient loading
- nitrogen metabolism
- phosphorus metabolism
- phytoplankton bloom
- humic substances
- Akvatisk ekologi
- Aquatic Ecology
- Mikrobiologi
- Microbiology
Publikations- och innehållstyp
- vet (ämneskategori)
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- Av författaren/redakt...
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Osbeck, Christof ...
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Pontiller, Benja ...
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Teikari, Jonna E
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Traving, Sachia ...
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Happel, Elisabet ...
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Henke, Britt
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visa fler...
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Huchaiah, Vimala
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Nilsson, Emelie
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Alneberg, Johann ...
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Lundin, Daniel, ...
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Sivonen, Kaarina
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Andersson, Ander ...
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Riemann, Lasse
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Middelboe, Mathi ...
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Kisand, Veljo
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Pinhassi, Jarone
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- NATURVETENSKAP
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och Biologi
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NATURVETENSKAP
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och Biologi
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och Mikrobiologi
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Linnéuniversitetet