Possible influence of bacterial quorum sensing on the hydrolysis of sinking particulate organic carbon in marine environments

Quorum sensing control of phosphorus acquisition in Trichodesmium consortia.

Composition and fate of gas and oil released to the water column during the Deepwater Horizon spill.

Rapid microbial respiration of Deepwater Horizon oil in surface waters of the Gulf of Mexico

Microbial sources of intact polar diacylglycerolipids in the western North Atlantic Ocean

Phosphorus supply drives rapid turnover of membrane phospholipids in the diatom Thalassiosira pseudonanna.

Bacterial and eukaryotic intact polar lipids in the eastern subtropical South Pacific: water-column distribution, planktonic sources, and fatty acid composition.

Abundance and diversity of heterotrophic bacterial cells assimilating 33P-phosphate in the subtropical North Atlantic Ocean

Tracking hydrocarbon plume transport and biodegradation at Deepwater Horizon

Viral glycosphingolipids induce lytic infection and cell death in marine phytoplankton

Kinetic constraints on acylated homoserine lactone-based quorum sensing in marine environments

Phytoplankton in the ocean substitute lipids in response to phosphorus scarcity

An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry

Assessing nutrient limitation of Prochlorococcus in the North Pacific subtropical gyre by using an RNA capture method

Phospholipid synthesis rates in the eastern subtropical South Pacific Ocean

Barium in twilight zone suspended matter as a proxy for particulate organic carbon mineralization: Results for the North Pacific

Primary, new and export production in the NW Pacific Subarctic Gyre during the VERTIGO K2 experiments

Microbial vs. zooplankton control of sinking particle flux in the ocean's twilight zone

Phosphate availability: ultimate control of new nitrogen input by nitrogen fixation in the tropical Pacific Ocean

Growth and P-specific uptake rates of bacterial and phytoplanktonic communities in the Southeast Pacific (BISOSOPE cruise)

Microbes and the marine phosphorus cycle.

Revisiting carbon flux through the ocean's twilight zone.

Sulfolipids dramatically decrease phosphorus demand by picocyanobacteria in oligotrophic marine environments.

Quantifying 3H-thymidine incorporation rates by a phylogenetically defined group of marine planktonic bacteria (Bacteriodetes phylum).

Relationships between bacterial community structure, light, and carbon cycling in the eastern subarctic North Pacific

Impact of suboxia on sinking particulate organic carbon: Enhanced carbon flux and preferential degradation of amino acids via denitrification

Seasonal variation in sedimentary amino acids and the association of organic matter with mineral surfaces in a sandy eelgrass meadow

Evidence of tight coupling between bacteria and particulate organic carbon during seasonal stratification of Lake Michigan.

Microbiological, molecular biological and stable isotope evidence for nitrogen fixation in the open waters of Lake Michigan

General Interest Articles

Image : Microbes and the Marine Phosphorus Cycle

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A conceptual model of dissolved P pools, their bioavailability, and P transformations across the prokaryotic cell membrane. The phosphate pool and pathway is indicated in black, phosphoesters in orange, and phosphonates in green. Note the relative size of the different P pools; their likely bioavailability is indicated on the right of the diagram. In this conceptual model, we indicate the potential for microbial metabolism of phosphate (through a high affinity system), general phosphoesters (via hydrolysis by nucleases or phospholipases, for example), phosphomonoesters (via hydrolysis by alkaline phosphatase – AP), and phosphonates (via a C-P lyase). We underscore that these are conceptual routes, and the presence and the localization of the transporters and enzymes shown here may differ substantially between microbes. For example, the route of phosphonate transport, hydrolysis, and accumulation as either Pi or LMW DOP is not well characterized. We also highlight here some important areas of P biogeochemistry that are poorly understood and deserve further attention: (1) the presence and functional role of viral P-related genes; (2) the reactivity of HMW phosphoesters, their modes of hydrolysis, and their transport into the cell; (3) the sources and cycling of dissolved phosphonates; (4) the composition and bioavailability of LMWDOP; and (5) the frequency and specificity of microbial phosphonate metabolism.

Last updated: December 14, 2011

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