セリンとアスパラギン酸に対するサルモネラ菌の走化性の差異

抄録

Peritrichous bacteria exhibit chemotaxis that cells accumulate around an attractant or recede from a repellent by repeating straight swimming and turning direction. As for chemotaxis of Salmonella typhimurium, cells are known to accumulate around aspartic acid in a shorter time than serine. In this study, we clarify that aspartic acid shows chemotaxis even at lower concentrations by measuring the degree of accumulation of bacteria by variously changing the concentration of the attractant in the capillary. In addition, the chemotactic behaviors (frequency of directional change and swimming trajectory) of a single cell were compared, but the behaviors were almost the same between serine and aspartic acid.