食菌蛭弧菌对氨基酸的趋化作用。
Chemotaxis toward amino acids by Bdellovibrio bacteriovorus.
作者信息
LaMarre A G, Straley S C, Conti S F
出版信息
J Bacteriol. 1977 Jul;131(1):201-7. doi: 10.1128/jb.131.1.201-207.1977.
Abstract
Chemotaxis toward amino acids by Bdellovibrio bacteriovorous strain UKi2 was studied by the capillary technique of Adler (J. Gen. Microbiol. 74:77-91, 1973). Chemotaxis was shown to be optimal when the capillaries were incubated at between 15 and 40 degrees C for 30 min; the optimal pH was between 7.0 and 8.2. The chemotactic response was proportional to the density of the suspension of bdellovibrios up to a density of 10(8) cells/ml. B. bacteriovorus was attracted to L-asparagine, L-cysteine, L-glutamine, glycine, L-histidine, L-lysine, and L-threonine. The possible roles of chemotaxis in the life of B. bacteriovorus are discussed.
摘要
采用阿德勒的毛细管技术（《普通微生物学杂志》74:77 - 91, 1973年）研究了食菌蛭弧菌UKi2菌株对氨基酸的趋化性。当毛细管在15至40摄氏度下孵育30分钟时，趋化性表现最佳；最佳pH值在7.0至8.2之间。趋化反应与蛭弧菌悬浮液的密度成正比，直至密度达到10⁸个细胞/毫升。食菌蛭弧菌被L - 天冬酰胺、L - 半胱氨酸、L - 谷氨酰胺、甘氨酸、L - 组氨酸、L - 赖氨酸和L - 苏氨酸所吸引。文中讨论了趋化性在食菌蛭弧菌生命活动中的可能作用。
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