Grossman N, Ron E Z
Department of Microbiology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Israel.
J Bacteriol. 1989 Jan;171(1):80-2. doi: 10.1128/jb.171.1.80-82.1989.
The experiments described in this report were designed to find out whether there is a minimal size threshold for cell division or for DNA replication in Escherichia coli. Cells with decreasing size (or mass) were obtained by successive amino acid starvations. Following two starvations, the cells were at least 30% smaller than unstarved newborn cells. The results suggest that this size is below a minimal size threshold for cell division but not for initiation of DNA replication.
本报告中所描述的实验旨在查明大肠杆菌细胞分裂或DNA复制是否存在最小尺寸阈值。通过连续的氨基酸饥饿获得尺寸(或质量)不断减小的细胞。经过两次饥饿处理后,这些细胞比未饥饿的新生细胞至少小30%。结果表明,这个尺寸低于细胞分裂的最小尺寸阈值,但未低于DNA复制起始的最小尺寸阈值。