Open AccessChromate‐resistance in a chromate‐reducing strain of Enterobacter cloacae
Author(s) -
Ohtake Hisao,
Komori Kohya,
Cervantes Carlos,
Toda Kiyoshi
Publication year - 1990
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1990.tb13841.x
Subject(s) - enterobacter cloacae , chromate conversion coating , anaerobic exercise , hexavalent chromium , strain (injury) , microbiology and biotechnology , chromium , chemistry , chromium compounds , potassium chromate , food science , biology , enterobacteriaceae , biochemistry , escherichia coli , physiology , organic chemistry , anatomy , gene
Resistance to toxic hexavalent chromium (chromate: CrO 4 2− _ in Enterobacter cloacae strain HO1, isolated from an activated sludge sample, was investigated under aerobic and anaerobic conditions. Decreased uptake of 51 CrO 4 2− in E. cloacae strain HO1 was observed under aerobic conditions, when compared with a standard laboratory E. cloacae strain (IAM 1624). Under anaerobic conditions E. cloacae strain HO1 was able to reduce hexavalent chromium to the less toxic trivalent form. When E. clocacae strain HO1 was grown with nitrate anaerobically, the cells were observed to lose simultaneously their chromate‐reducing ability and chromate‐resistance under anaerobic conditions.