Diversity of ammonia monooxygenase (amoA) genes across environmental gradients in Chesapeake Bay sediments

By C. A. Francis, G. O'Mullan, Bess Ward. 2003

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Nitrification in Marine Systems (2008, unknown): “Sequences representing both the uncultivated marine Nitrosospira clade and the marine Nitrososmonas clade were found in clone libraries from Chesapeake Bay sediments (Francis et al., 2003).”
Depth distribution of ammonia oxidation rates and ammonia‐oxidizer community composition in the Sargasso Sea (2013, background): “The database of AOA amoA sequences has grown rapidly, and it appears that the AOA amoA, like the AOB amoA, is less diverse than other functional genes (e.g., nirS [Francis et al. 2003; Dang et al. 2008, 2009] and nifH [Dang et al. 2013]).”
Microbial Nitrogen Cycling in Estuaries: From Genes to Ecosystem Processes (2018, result): “Similar to AOA, the diversity of AOB amoA genes in estuary sediments typically varies along the estuary salinity gradient (Francis et al. 2003; Bernhard et al. 2005; Beman and Francis 2006; Freitag et al. 2006; Mosier and Francis 2008; Sahan and Muyzer 2008; Santoro et al. 2008).”
Estuarine Nitrifiers: New Players, Patterns and Processes (2010, unknown): “…at the freshwater end composed of sequences related to both the Nitrosomonas and 7 Nitrosospira genera, while communities at the marine end of the gradient tend to be dominated 8 by Nitrosospira-like sequences (de Bie et al., 2001; Francis et al., 2003; Bernhard et al., 2005; 9 Ward et al., 2007).”