温度变化对噬纤维菌属菌株U67的滑行运动性、黏附性及脂肪酸组成的影响
Effect of temperature shifts on gliding motility, adhesion, and fatty acid composition of Cytophaga sp. strain U67.
作者信息
McGrath C F, Moss C W, Burchard R P
机构信息
Department of Biological Sciences, University of Maryland Baltimore County 21228.
出版信息
J Bacteriol. 1990 Apr;172(4):1978-82. doi: 10.1128/jb.172.4.1978-1982.1990.
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.
当适应25摄氏度的噬纤维菌属菌株U67转移到小于或等于12摄氏度的环境中时，其滑动运动和25度的翻转受到抑制；转移到13摄氏度时运动性未被阻断。适应4摄氏度的细菌在测试的整个4至25摄氏度温度范围内都具有运动性。U67对基质的粘附似乎不受温度变化的影响。适应4摄氏度的细菌比在25摄氏度下生长的细菌具有更高比例的不饱和脂肪酸和支链脂肪酸。当适应25摄氏度的细菌逐渐降温时，在4至5摄氏度时重新出现滑动能力的时间与脂肪酸组成的这些变化相关。
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