期刊
JOURNAL OF STATISTICAL PHYSICS
卷 145, 期 1, 页码 1-22出版社
SPRINGER
DOI: 10.1007/s10955-011-0305-9
关键词
Cell size distribution; Structured populations; Multiple cell division; Stochastic cell division; Population balance equations
资金
- BMBF
Populations of unicellular organisms that grow under constant environmental conditions are considered theoretically. The size distribution of these cells is calculated analytically, both for the usual process of binary division, in which one mother cell produces always two daughter cells, and for the more complex process of multiple division, in which one mother cell can produce 2(n) daughter cells with n = 1, 2, 3, .... The latter mode of division is inspired by the unicellular algae Chlamydomonas reinhardtii. The uniform response of the whole population to different environmental conditions is encoded in the individual rates of growth and division of the cells. The analytical treatment of the problem is based on size-dependent rules for cell growth and stochastic transition processes for cell division. The comparison between binary and multiple division shows that these different division processes lead to qualitatively different results for the size distribution and the population growth rates.
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