Premium
Increased resistance of Escherichia coli to acrylic acid and to copper ions after cold‐shock
Author(s) -
Whiting Gall C.,
Rowbury R.J.
Publication year - 1995
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1995.tb00437.x
Subject(s) - escherichia coli , copper , microbiology and biotechnology , bacteria , shock (circulatory) , chemistry , ion , biology , biochemistry , medicine , gene , genetics , organic chemistry
The effects of cold‐shock on the resistance of plasmid‐free and plasmid‐carrying Escherichia coli to acrylate and copper ions have been tested. Such shock, produced by transfer from 37 to 5°C, with 60 min incubation at the lower temperature, significantly enhanced the resistance of all the tested strains to both inhibitors. Such resistances may have arisen because the inhibitory agents are less able, due to porin changes, to penetrate into the organisms after cold‐shock. It is more likely, however, that inhibitor penetration is unaffected but that cold‐shocked organisms are better able to repair the damage caused (e.g. to membranes, DNA or cellular enzymes) by the inhibitors.