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. 2023 Aug 17;57(34):12557–12570. doi: 10.1021/acs.est.3c00636

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© 2023 The Authors. Published by American Chemical Society

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Historic discovery of NOB and complete ammonia oxidation (comammox) genera. The red line indicates the increase in the total number of NOB/comammox genera identified. The colored background of the genera names represents the phylum to which each NOB/comammox belongs to. The phylogenetic tree is a pruned tree from a previous “tree of life” study,²¹ and branches with colored contour depict the phylum. The discovery of NOB genera was first reported in the following studies: (a) ref (22), (b) ref (23), (c) ref (24), (d) ref (1), (e) ref (25), (f) refs (26 and 27), (g) ref (28) (h) ref (29), and (i) ref (30).