Ivanov V N, Nud'ga A Iu
Mikrobiol Zh (1978). 1990 Nov-Dec;52(6):17-21.
It is shown that the Bacillus megaterium population has two types of qualitatively differing cells: exo- and endotrophic ones, i.e. the cells which assimilate in a given moment of time the source of carbon and energy from the medium or only intracellular sources of carbon and energy. Trophic structure of the population has been analyzed in different phases of the batch culture as well as in case of cell starvation. In all cases the content of exotrophic cells in the bacilli population considerably decreases with exhaustion of the nutrient medium. The obtained results are hypothetically explained by the alteration of the exo- and endotrophic processes in a cell cycle of bacteria.
结果表明，巨大芽孢杆菌群体有两种性质不同的细胞类型：外营养型和内营养型，即那些在特定时刻从培养基中同化碳源和能源或者仅同化细胞内碳源和能源的细胞。已对分批培养不同阶段以及细胞饥饿情况下群体的营养结构进行了分析。在所有情况下，随着营养培养基的耗尽，芽孢杆菌群体中外营养型细胞的含量显著下降。所获得的结果被假设为由细菌细胞周期中外营养和内营养过程的改变所解释。
