Open AccessUrea production by Thiosphaera pantotropha and by anaerobic enrichment cultures from marine sediments
Author(s) -
Pedersen Henning,
Lomstein Bente Aa.,
Isaksen Mai F.,
Henry Blackburn T.
Publication year - 1993
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.1574-6941.1993.tb00048.x
Subject(s) - urea , biology , denitrifying bacteria , fermentation , anaerobic exercise , bacteria , food science , yeast extract , biochemistry , microbiology and biotechnology , environmental chemistry , denitrification , nitrogen , chemistry , organic chemistry , physiology , genetics
The production of urea by Thiosphaera pantotropha was studied. Batch cultures were grown on acetate as energy source and with NO 3 − or O 2 as terminal electron acceptor. Urea accumulated in the media during exponential growth in aerobic and anaerobic cultures of T. pantotropha . Urea production continued after the cells had entered the stationary growth phase. Bacterial ability to produce urea was supported by studies of cultures enriched for denitrifying, sulphate‐reducing and fermenting bacteria. The results implied that urea production was common among bacteria normally considered to be important in marine sediments.