Osmotaxis in Escherichia coli.
The escape of motile organisms from high concentrations of chemicals was studied in Escherichia coli. We have found all chemicals tested to be osmorepellents. It was shown in both a spatial assay and a temporal assay that the known sensory receptors for chemotaxis are not used for osmotaxis, so a different sensory mechanism appears to be employed. According to the temporal assay, the mechanism between sensory receptors and flagella is also not used for tumbling response (at least in solutions above 0.4 osmolar).
Li
C
C
Department of Biochemistry, University of Wisconsin, Madison 53706.
Boileau
A J
AJ
Kung
C
C
Adler
J
J
D002633:Chemotaxis; D004926:Escherichia coli / Q000166:cytology*; D005407:Flagella / Q000502:physiology; D009995:Osmosis; D011984:Sensory Receptor Cells / Q000502:physiology