Open AccessDenitrification under various aeration conditions in Comamonas sp., strain SGLY2
Author(s) -
Patureau D.,
Davison J.,
Bernet N.,
Moletta R.
Publication year - 1994
Publication title -
fems microbiology ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.377
H-Index - 155
eISSN - 1574-6941
pISSN - 0168-6496
DOI - 10.1111/j.1574-6941.1994.tb00092.x
Subject(s) - denitrifying bacteria , denitrification , biology , aeration , anoxic waters , nitrate , aerobic denitrification , nitrite , comamonas , anaerobic exercise , nitrate reductase , microbiology and biotechnology , oxygen , strain (injury) , food science , nitrite reductase , bacteria , nitrogen , environmental chemistry , chemistry , ecology , pseudomonas , physiology , genetics , organic chemistry , anatomy
A number of bacteria were isolated from different anoxic reactors. Those having denitrifying potential were tested for their ability to denitrify under aerobic conditions. The activity of their denitrifying enzymes varied from partial inactivation by oxygen (strains NO2B9 and TCET1) to oxygen‐independent activity in a strain named SGLY2 which was tentatively identified as Comamonas sp. The effect of different aeration conditions on growth and on denitrification of SGLY2 was studied more extensively. This strain was able to consume oxygen and nitrate simultaneously with the production of nitrogen and without build‐up of nitrite. The dissimilatory nitrate‐reductase of nitrate‐adapted cells was found to be more active in the presence of oxygen than in micro‐aerobic or strictly anaerobic conditions.