History Nitrobacter

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sergei nikolaievich winogradsky


in 1890, ukrainian-russian microbiologist sergei winogradsky isolated first pure cultures of nitrifying bacteria capable of growth in absence of organic matter , sunlight. exclusion of organic material winogradsky in preparation of cultures recognized contributing factor success in isolating microbes. in 1891, english chemist robert warington proposed two-stage mechanism nitrification, mediated 2 distinct genera of bacteria. first stage proposed conversion of ammonia nitrite, , second oxidation of nitrite nitrate. winogradsky named bacteria responsible oxidation of nitrite nitrate nitrobacter in subsequent study on microbial nitrification in 1892. winslow et al. proposed type species nitrobacter winogradsky in 1917. species officially recognized in 1980.








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