Lubos Polerecky | Max Planck Institute for Marine Microbiology (original) (raw)
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Papers by Lubos Polerecky
Limnology and …, Jan 1, 2010
2011 GSA Annual …, Jan 1, 2011
... JONES, Daniel S. 1 , POLERECKY, Lubos 2 , DEMPSEY, Brian A. 3 , GALDENZI, Sandro 4 , and MACA... more ... JONES, Daniel S. 1 , POLERECKY, Lubos 2 , DEMPSEY, Brian A. 3 , GALDENZI, Sandro 4 , and MACALADY, Jennifer L. 1 , (1) Geosciences, Pennsylvania State University, University Park, PA 16802, djones@psu.edu, (2) Max Planck Institute for Marine Microbiology ...
frontiersin.org
Frontiers | Sulfur Respiration in a Marine Chemolithoautotrophic Beggiatoa Strain | Frontiers in ... more Frontiers | Sulfur Respiration in a Marine Chemolithoautotrophic Beggiatoa Strain | Frontiers in Microbial Physiology and Metabolism publishes articles on the most outstanding discoveries across the research spectrum of Frontiers | Sulfur Respiration in a Marine Chemolithoautotrophic ...
… engineering in intertidal …
Nordic Marine …, Jan 1, 2010
… Image and Signal …, Jan 1, 2009
Proceedings of the …, Jan 1, 2012
Environmental …, Jan 1, 2011
Environmental …, Jan 1, 2012
Geophysical …, Jan 1, 2011
Page 1. Geophysical Research Abstracts Vol. 13, EGU2011-12045, 2011 EGU General Assembly 2011 © A... more Page 1. Geophysical Research Abstracts Vol. 13, EGU2011-12045, 2011 EGU General Assembly 2011 © Author(s) 2011 A single cell nanoSIMS view on the transfer of fixed nitrogen to bacteria associated with filamentous N-fixing cyanobacteria in the Baltic Sea ...
… : The 2003 Annual …, Jan 1, 2011
... Bird, Paul, Werner, Ursula, Eickert, Gaby, Polerecky, Lubos, Grunwald, Bjorn, Kuhl, Michael, ... more ... Bird, Paul, Werner, Ursula, Eickert, Gaby, Polerecky, Lubos, Grunwald, Bjorn, Kuhl, Michael, Holst, Gerhard and deBeer, Dirk (2003). ... Created: Fri, 24 Aug 2007, 12:51:57 EST - Detailed History. The University of Queensland. Brisbane St Lucia, QLD 4072 +61 7 3365 1111. ...
Pore water transport …, Jan 1, 2005
The concept of the study was developed by MB and MHMB and UW conducted the experiments with contr... more The concept of the study was developed by MB and MHMB and UW conducted the experiments with contribution of KB and EW. MB evaluated the data and wrote the manuscript with editorial help from all co-authors. The manuscript has been submitted to ...
Flow of Light Energy in …, Jan 1, 2010
Frontiers in …, Jan 1, 2011
The chemolithoautotrophic strain Beggiatoa sp. 35Flor shows an unusual migration behavior when cu... more The chemolithoautotrophic strain Beggiatoa sp. 35Flor shows an unusual migration behavior when cultivated in a gradient medium under high sulfide fluxes. As common for Beggiatoa spp., the filaments form a mat at the oxygen–sulfide interface. However, upon prolonged incubation, a subpopulation migrates actively downward into the anoxic and sulfidic section of the medium, where the filaments become gradually depleted in their sulfur and polyhydroxyalkanoates (PHA) inclusions. This depletion is correlated with the production of hydrogen sulfide. The sulfur- and PHA-depleted filaments return to the oxygen–sulfide interface, where they switch back to depositing sulfur and PHA by aerobic sulfide oxidation. Based on these observations we conclude that internally stored elemental sulfur is respired at the expense of stored PHA under anoxic conditions. Until now, nitrate has always been assumed to be the alternative electron acceptor in chemolithoautotrophic Beggiatoa spp. under anoxic conditions. As the medium and the filaments were free of oxidized nitrogen compounds we can exclude this metabolism. Furthermore, sulfur respiration with PHA under anoxic conditions has so far only been described for heterotrophic Beggiatoa spp., but our medium did not contain accessible organic carbon. Hence the PHA inclusions must originate from atmospheric CO2 fixed by the filaments while at the oxygen–sulfide interface. We propose that the directed migration of filaments into the anoxic section of an oxygen–sulfide gradient system is used as a last resort to preserve cell integrity, which would otherwise be compromised by excessive sulfur deposition occurring in the presence of oxygen and high sulfide fluxes. The regulating mechanism of this migration is still unknown.
Limnology and …, Jan 1, 2010
2011 GSA Annual …, Jan 1, 2011
... JONES, Daniel S. 1 , POLERECKY, Lubos 2 , DEMPSEY, Brian A. 3 , GALDENZI, Sandro 4 , and MACA... more ... JONES, Daniel S. 1 , POLERECKY, Lubos 2 , DEMPSEY, Brian A. 3 , GALDENZI, Sandro 4 , and MACALADY, Jennifer L. 1 , (1) Geosciences, Pennsylvania State University, University Park, PA 16802, djones@psu.edu, (2) Max Planck Institute for Marine Microbiology ...
frontiersin.org
Frontiers | Sulfur Respiration in a Marine Chemolithoautotrophic Beggiatoa Strain | Frontiers in ... more Frontiers | Sulfur Respiration in a Marine Chemolithoautotrophic Beggiatoa Strain | Frontiers in Microbial Physiology and Metabolism publishes articles on the most outstanding discoveries across the research spectrum of Frontiers | Sulfur Respiration in a Marine Chemolithoautotrophic ...
… engineering in intertidal …
Nordic Marine …, Jan 1, 2010
… Image and Signal …, Jan 1, 2009
Proceedings of the …, Jan 1, 2012
Environmental …, Jan 1, 2011
Environmental …, Jan 1, 2012
Geophysical …, Jan 1, 2011
Page 1. Geophysical Research Abstracts Vol. 13, EGU2011-12045, 2011 EGU General Assembly 2011 © A... more Page 1. Geophysical Research Abstracts Vol. 13, EGU2011-12045, 2011 EGU General Assembly 2011 © Author(s) 2011 A single cell nanoSIMS view on the transfer of fixed nitrogen to bacteria associated with filamentous N-fixing cyanobacteria in the Baltic Sea ...
… : The 2003 Annual …, Jan 1, 2011
... Bird, Paul, Werner, Ursula, Eickert, Gaby, Polerecky, Lubos, Grunwald, Bjorn, Kuhl, Michael, ... more ... Bird, Paul, Werner, Ursula, Eickert, Gaby, Polerecky, Lubos, Grunwald, Bjorn, Kuhl, Michael, Holst, Gerhard and deBeer, Dirk (2003). ... Created: Fri, 24 Aug 2007, 12:51:57 EST - Detailed History. The University of Queensland. Brisbane St Lucia, QLD 4072 +61 7 3365 1111. ...
Pore water transport …, Jan 1, 2005
The concept of the study was developed by MB and MHMB and UW conducted the experiments with contr... more The concept of the study was developed by MB and MHMB and UW conducted the experiments with contribution of KB and EW. MB evaluated the data and wrote the manuscript with editorial help from all co-authors. The manuscript has been submitted to ...
Flow of Light Energy in …, Jan 1, 2010
Frontiers in …, Jan 1, 2011
The chemolithoautotrophic strain Beggiatoa sp. 35Flor shows an unusual migration behavior when cu... more The chemolithoautotrophic strain Beggiatoa sp. 35Flor shows an unusual migration behavior when cultivated in a gradient medium under high sulfide fluxes. As common for Beggiatoa spp., the filaments form a mat at the oxygen–sulfide interface. However, upon prolonged incubation, a subpopulation migrates actively downward into the anoxic and sulfidic section of the medium, where the filaments become gradually depleted in their sulfur and polyhydroxyalkanoates (PHA) inclusions. This depletion is correlated with the production of hydrogen sulfide. The sulfur- and PHA-depleted filaments return to the oxygen–sulfide interface, where they switch back to depositing sulfur and PHA by aerobic sulfide oxidation. Based on these observations we conclude that internally stored elemental sulfur is respired at the expense of stored PHA under anoxic conditions. Until now, nitrate has always been assumed to be the alternative electron acceptor in chemolithoautotrophic Beggiatoa spp. under anoxic conditions. As the medium and the filaments were free of oxidized nitrogen compounds we can exclude this metabolism. Furthermore, sulfur respiration with PHA under anoxic conditions has so far only been described for heterotrophic Beggiatoa spp., but our medium did not contain accessible organic carbon. Hence the PHA inclusions must originate from atmospheric CO2 fixed by the filaments while at the oxygen–sulfide interface. We propose that the directed migration of filaments into the anoxic section of an oxygen–sulfide gradient system is used as a last resort to preserve cell integrity, which would otherwise be compromised by excessive sulfur deposition occurring in the presence of oxygen and high sulfide fluxes. The regulating mechanism of this migration is still unknown.