Effect of temperature shifts on gliding motility, adhesion, and fatty acid composition of Cytophaga sp. strain U67.
Gliding motility and flipping of 25 degrees C-adapted Cytophaga sp. strain U67 were inhibited when the bacteria were shifted to a less than or equal to 12 degrees C environment; motility was not blocked by a shift to 13 degrees C. Bacteria adapted to 4 degrees C were motile over the entire 4 to 25 degrees C temperature range tested. U67 adhesion to the substratum appeared to be unaffected by temperature shifts. Bacteria adapted to 4 degrees C had higher proportions of unsaturated and branched-chain fatty acids than did those grown at 25 degrees C. When 25 degrees C-adapted bacteria were subjected to a gradual temperature decline, the time of reappearance of gliding competence at 4 to 5 degrees C was correlated with these changes in fatty acid composition.
McGrath
C F
CF
Department of Biological Sciences, University of Maryland Baltimore County 21228.
Moss
C W
CW
Burchard
R P
RP
D000064:Acclimatization; D000818:Animals; D002465:Cell Movement; D003589:Cytophaga / Q000032:analysis / Q000502:physiology*; D005227:Fatty Acids / Q000032:analysis*; D007700:Kinetics; D013696:Temperature
D005227:Fatty Acids