Search Results - "Kraepiel, Anne M. L"

Molybdenum limitation of asymbiotic nitrogen fixation in tropical forest soils by Hedin, Lars O, Barron, Alexander R, Wurzburger, Nina, Bellenger, Jean Phillipe, Wright, S. Joseph, Kraepiel, Anne M. L

“…Nitrogen fixation, the biological conversion of di-nitrogen to plant-available ammonium, is the primary natural input of nitrogen to ecosystems, and influences…”
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Molybdenum and phosphorus interact to constrain asymbiotic nitrogen fixation in tropical forests by Wurzburger, Nina, Bellenger, Jean Philippe, Kraepiel, Anne M L, Hedin, Lars O

“…Biological di-nitrogen fixation (N(2)) is the dominant natural source of new nitrogen to land ecosystems. Phosphorus (P) is thought to limit N(2) fixation in…”
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Storage and bioavailability of molybdenum in soils increased by organic matter complexation by Mishra, Bhoopesh, Wichard, Thomas, Myneni, Satish C. B, Bellenger, Jean-Philippe, Kraepiel, Anne M. L

“…The micronutrient molybdenum is a necessary component of the nitrogen-fixing enzyme nitrogenase. Molybdenum is very rare in soils, and is usually present in a…”
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Alternative nitrogenase activity in the environment and nitrogen cycle implications by Zhang, Xinning, McRose, Darcy L, Darnajoux, Romain, Bellenger, J. P, Morel, François M. M, Kraepiel, Anne M. L

“…Biological nitrogen fixation, the main natural input of fixed nitrogen into the biosphere, is catalyzed by Mo-, V-, or Fe-only nitrogenase metalloenzymes…”
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Biological nitrogen fixation by alternative nitrogenases in boreal cyanolichens: importance of molybdenum availability and implications for current biological nitrogen fixation estimates by Darnajoux, Romain, Zhang, Xinning, McRose, Darcy L., Miadlikowska, Jolanta, Lutzoni, François, Kraepiel, Anne M. L., Bellenger, Jean‐Philippe

“…Cryptogamic species and their associated cyanobacteria have attracted the attention of bio-geochemists because of their critical roles in the nitrogen cycle…”
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Role of the Siderophore Azotobactin in the Bacterial Acquisition of Nitrogenase Metal Cofactors by Wichard, Thomas, Bellenger, Jean-Philippe, Morel, François M. M, Kraepiel, Anne M. L

“…Fixation of dinitrogen by soil bacteria is catalyzed by the enzyme nitrogenase which requires iron, molybdenum, and/or vanadium as metal cofactors. Under…”
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Unicellular C4 photosynthesis in a marine diatom by REINFELDER, John R, KRAEPLEL, Anne M. L, MOREL, Francois M. M

“…Nearly 50 years ago, inorganic carbon was shown to be fixed in microalgae as the C3 compound phosphoglyceric acid. The enzyme responsible for C3 carbon…”
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Nitrogen isotope fractionation by alternative nitrogenases and past ocean anoxia by Zhang, Xinning, Sigman, Daniel M., Morel, François M. M., Kraepiel, Anne M. L.

“…Biological nitrogen fixation constitutes the main input of fixed nitrogen to Earth’s ecosystems, and its isotope effect is a key parameter in isotope-based…”
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Catechol Siderophores Control Tungsten Uptake and Toxicity in the Nitrogen-Fixing Bacterium Azotobacter vinelandii by Wichard, Thomas, Bellenger, Jean-Philippe, Loison, Aurélie, Kraepiel, Anne M. L

“…Molybdenum (Mo) and tungsten (W), which have similar chemistry, are present at roughly the same concentration in the earth’s continental crust, and both are…”
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Siderophore production in Azotobacter vinelandii in response to Fe‐, Mo‐ and V‐limitation by McRose, Darcy L., Baars, Oliver, Morel, François M. M., Kraepiel, Anne M. L.

“…Summary Azotobacter vinelandii is a terrestrial diazotroph well studied for its siderophore production capacity and its role as a model nitrogen fixer. In…”
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Sources and Variations of Mercury in Tuna by Kraepiel, Anne M. L, Keller, Klaus, Chin, Henry B, Malcolm, Elizabeth G, Morel, François M. M

“…While the bulk of human exposure to mercury is through the consumption of marine fish, most of what we know about mercury methylation and bioaccumulation is…”
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Diversity and Activity of Alternative Nitrogenases in Sequenced Genomes and Coastal Environments by McRose, Darcy L, Zhang, Xinning, Kraepiel, Anne M L, Morel, François M M

“…The nitrogenase enzyme, which catalyzes the reduction of N gas to NH , occurs as three separate isozyme that use Mo, Fe-only, or V. The majority of global…”
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Complexation of oxoanions and cationic metals by the biscatecholate siderophore azotochelin by Bellenger, Jean-Philippe, Arnaud-Neu, Françoise, Asfari, Zouhair, Myneni, Satish C B, Stiefel, Edward I, Kraepiel, Anne M L

“…Azotochelin is a biscatecholate siderophore produced by the nitrogen-fixing soil bacterium Azotobacter vinelandii. The complexation properties of azotochelin…”
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On the Acid−Base Chemistry of Permanently Charged Minerals by Kraepiel, Anne M. L, Keller, Klaus, Morel, François M. M

“…The acid−base properties of oxides are well described by the surface complexation model, which superposes a thermodynamic description of acid−base reactions at…”
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Photooxidation of Hg(0) in Artificial and Natural Waters by Lalonde, Janick D, Amyot, Marc, Kraepiel, Anne M. L, Morel, François M. M

“…The oxidation of volatile aqueous Hg(0) in aquatic systems may be important in reducing fluxes of Hg out of aquatic systems. Here we report the results of…”
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Carbon substrate re‐orders relative growth of a bacterium using Mo‐, V‐, or Fe‐nitrogenase for nitrogen fixation by Luxem, Katja E., Kraepiel, Anne M. L., Zhang, Lichun, Waldbauer, Jacob R., Zhang, Xinning

“…Summary Biological nitrogen fixation is catalyzed by the molybdenum (Mo), vanadium (V) and iron (Fe)‐only nitrogenase metalloenzymes. Studies with purified…”
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Carbon substrate re‐orders relative growth of a bacterium using Mo‐, V‐, or Fe‐nitrogenase for nitrogen fixation by Luxem, Katja E., Kraepiel, Anne M. L., Zhang, Lichun, Waldbauer, Jacob R., Zhang, Xinning

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THE CHEMICAL CYCLE AND BIOACCUMULATION OF MERCURY by Morel, François M. M, Kraepiel, Anne M. L, Amyot, Marc

“…Because it is very toxic and accumulates in organisms, particularly in fish, mercury is an important pollutant and one of the most studied. Nonetheless we…”
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Response to Comment on “Sources and Variations of Mercury in Tuna” by Kraepiel, Anne M. L, Keller, Klaus, Chin, Henry B, Malcolm, Elizabeth G, Morel, François M. M

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On the Acid−Base Chemistry of Permanently Charged Minerals by Kraepiel, Anne M. L, Keller, Klaus, Morel, Francois M. M

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