Nitrobacter alkalicus Sorokin et al. 1999 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Alphaproteobacteria Garrity et al. 2006 Hyphomicrobiales Douglas 1957 (Approved Lists 1980) emend. Hördt et al. 2020 Nitrobacteraceae Buchanan 1917 (Approved Lists 1980) emend. Hördt et al. 2020 Nitrobacter Winogradsky 1892 emend. Watson 1974 (Approved Lists 1980) Nitrobacter alkalicus Sorokin et al. 1999 Nitrobacter Winogradsky 1892 emend. Watson 1974 (Approved Lists 1980) Nitrobacter vulgaris Bock et al. 2001 Nitrobacter winogradskyi Winslow et al. 1917 (Approved Lists 1980) emend. Hördt et al. 2020 Nitrobacter hamburgensis Bock et al. 2001 Nitrobacter sp. None 2015 Nitrobacter alkalicus Sorokin et al. 1999 List Editor Validation List no. 71. Validation of publication of new names and new combinations previously effectively published outside the IJSB. 1999 49 4 1325 1326 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-49-4-1325 Sorokin D.Y. Muyzer G. Brinkhoff T. Kuenen J.G. Jetten M.S.M. Isolation and characterization of a novel facultatively alkaliphilic Nitrobacter species, N. alkalicus sp. nov. 1998 170 345 352 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/s002030050652 9818354 Sorokin D.Y. Muyzer G. Brinkhoff T. Kuenen J.G. Jetten M.S.M. Isolation and characterization of a novel facultatively alkaliphilic Nitrobacter species, N. alkalicus sp. nov. 1998 170 345 352 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/s002030050652 9818354