Harvey R J, Marr A G, Painter P R
J Bacteriol. 1967 Feb;93(2):605-17. doi: 10.1128/jb.93.2.605-617.1967.
Escherichia coli and Azotobacter agilis were grown in minimal media until a steady state was established. The distribution of cell size was determined electronically. From the equation of Collins and Richmond, the growth rate of individual cells was computed as a function of size. The main features of the growth of individual E. coli and A. agilis cells revealed by this work were: the specific growth rate decreased at the time of division, and both the absolute and specific growth rates increased between divisions. The frequency function of interdivision times was computed and was found to be positively skewed with a coefficient of variation of approximately 0.3. The results supported the hypothesis of Koch and Schaechter that the size of an individual cell at division is highly regulated.
将大肠杆菌和敏捷固氮菌在基本培养基中培养,直至建立稳定状态。通过电子方式确定细胞大小的分布。根据柯林斯和里士满的方程,计算单个细胞的生长速率作为大小的函数。这项工作揭示的单个大肠杆菌和敏捷固氮菌细胞生长的主要特征是:在分裂时比生长速率下降,并且在两次分裂之间绝对生长速率和比生长速率均增加。计算了分裂间隔时间的频率函数,发现其呈正偏态,变异系数约为0.3。结果支持了科赫和沙赫特的假设,即分裂时单个细胞的大小受到高度调节。