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Title: Heterotrophic nitrification by Alcaligenes faecalis: NO sub 2 sup minus , NO sub 3 sup minus , N sub 2 O, and NO production in exponentially growing cultures

Heterotrophic nitrification by Alcaligenes faecalis DSM 30030 was not restricted to media containing organic forms of nitrogen. In both peptone-meat extract and defined media with ammonium and citrate as the sole nitrogen and carbon sources, respectively, NO{sub 2}{sup {minus}}, NO{sub 3}{sup {minus}}, NO, and N{sub 2}O were produced under aerobic growth conditions. Heterotrophic nitrification was not attributable to old or dying cell populations. Production of NO{sub 2}{sup {minus}}, NO{sub 3}{sup {minus}}, NO, and N{sub 2}O was detectable shortly after cultures started growth and proceeded exponentially during the logarithmic growth phase. NO{sub 2}{sup {minus}} and NO{sub 3}{sup {minus}} production rates were higher for cultures inoculated in media with pH values below 7 than for those in media at alkaline pH. Neither assimilatory nor dissimilatory nitrate or nitrite reductase activities were detectable in aerobic cultures.
Authors:
; ; ; ;  [1]
  1. (Fraunhofer-Institute for Atmospheric Environmental Research, Garmisch-Partenkirchen (Germany, F.R.))
Publication Date:
OSTI Identifier:
5052008
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied and Environmental Microbiology; (USA); Journal Volume: 55:8
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; BACTERIA; METABOLISM; CULTURE MEDIA; NITRIFICATION; NITROGEN OXIDES; BIOSYNTHESIS; AEROBIC CONDITIONS; GROWTH; PH VALUE; CHALCOGENIDES; CHEMICAL REACTIONS; MICROORGANISMS; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SYNTHESIS 550500* -- Metabolism