Publications Search
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2021. 4D imaging reveals mechanisms of clay-carbon protection and release. 12(1):622.
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2021. Critical inundation level for methane emissions from wetlands. Environmental Research Letters.
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2021. The role of oxygen in stimulating methane production in wetlands. Global Change Biology.
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2020. Biological nitrogen fixation by alternative nitrogenases in terrestrial ecosystems: a review. Biogeochemistry. 149(1):53-73.
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2020. Carbon substrate re-orders relative growth of a bacterium using Mo-, V-, or Fe-nitrogenase for nitrogen fixation.. Environmental Microbiology. 22(4):1397–1408.
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2020. Global Nitrogen Cycle: Critical Enzymes, Organisms, and Processes for Nitrogen Budgets and Dynamics. Chemical Reviews.
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2020. Large hydrogen isotope fractionations distinguish nitrogenase-derived methane from other sources. Applied and Environmental Microbiology.
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2019. Effect of iron limitation on the isotopic composition of cellular and released fixed nitrogen in Azotobacter vinelandii. Geochimica et Cosmochimica Acta. 244:12-23.
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2019. Genetic, structural, and functional diversity of low and high-affinity siderophores in strains of nitrogen fixing: Azotobacter chroococcum. Metallomics. 11(1):201-212.
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2019. Molybdenum threshold for ecosystem-scale alternative vanadium nitrogenase activity in boreal forests. Proceedings of the National Academy of Science.
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2018. Crochelins: Siderophores with an Unprecedented Iron-Chelating Moiety from the Nitrogen-Fixing Bacterium Azotobacter chroococcum. Angewandte Chemie. 57(2):536-541.
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2018. The purple non-sulfur bacterium Rhodopseudomonas palustris produces novel petrobactin related siderophores under aerobic and anaerobic conditions. Environmental Microbiology. 5:1667-1676.
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2017. Biological nitrogen fixation by alternative nitrogenases in boreal cyanolichens: importance of molybdenum availability and implications for current biological nitrogen fixation estimates. New Phytol. 213(2):680-689.
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2017. Diversity and activity of alternative nitrogenases in sequenced genomes and coastal environments. Frontiers in Microbiology. 8(267)
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2016. Alternative nitrogenase activity in the environment and nitrogen cycle implications. Biogeochemistry. 127(2-3):189-198.
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2016. The Siderophore Metabolome of Azotobacter vinelandii. Applied and Environmental Microbiology. 82(1):27-39.
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2014. Nitrogen isotope fractionation by alternative nitrogenases and past ocean anoxia. Proceedings of the National Academy of Sciences. 111(13):4782-4787.
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2014. Possible contribution of alternative nitrogenases to nitrogen fixation by asymbiotic N2-fixing bacteria in soils. Soil Biology and Biochemistry. 69:413-420.
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2013. Genome-Wide Effects of Selenium and Translational Uncoupling on Transcription in the Termite Gut Symbiont Treponema primitia. mBio. 4(6):e00869-13.
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2013. Localizing transcripts to single cells suggests an important role of uncultured deltaproteobacteria in the termite gut hydrogen economy. Proceedings of the National Academy of Sciences. 110(40):16163-16168.
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2012. Evidence for Cascades of Perturbation and Adaptation in the Metabolic Genes of Higher Termite Gut Symbionts. mBio. 3(4):e00223-12.
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2011. Genes for selenium dependent and independent formate dehydrogenase in the gut microbial communities of three lower, wood-feeding termites and a wood-feeding roach. Environmental Microbiology. 13(2):307-323.
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2010. Selenium controls transcription of paralogous formate dehydrogenase genes in the termite gut acetogen, Treponema primitia. Environmental Microbiology. 12(8):2245-2258.
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2009. Large D/H variations in bacterial lipids reflect central metabolic pathways. Proceedings of the National Academy of Sciences. 106(31):12580-12586.
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2007. Fate of DTPA, EDTA, and EDDS in Hydroponic Media and Effects on Plant Mineral Nutrition. Journal of Plant Nutrition. 30(8):1229-1246.