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Correlation between microorganism division rate and cell dimorphism

division rate dimorphism

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#1 miosim



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Posted 19 February 2022 - 09:28 AM

Hi there,

More than 30 years ago I came across the paper that show correlation between the microorganism growth rate and the cell dimorphism (or heterogeneousness) in the population (see below in italic). I would like to use those (or similar) observation in my essay, but I don’t have an assess to those references published in Russian long time ago. I thought I could be able to find the similar observation in more recent publication but wasn’t able to do this.

The question I have: Does dose observations are still make a sence 40 years later and if yes, where can I found more recent refences to such observation.

Disclosure: I am not a biologist, but this topic crossed my interests in my studies in the field of theoretical biology.

Thank you


“There are number of observations on cell dimorphism in the bacteria populations that are in favor to this prediction. For example, the population of the rapidly dividing bacteria is the most homogeneous with regard to the biochemical properties of their cells vs. slowly dividing (Ivanov & Ugodchikov, 1984). The variety of the Escherichia coli cell size in population is increased under unfavorable for growing and cell division conditions (Huzyk & Clarc, 1971). Asymmetry of the dividing haploid yeast cells is increased during decreasing of the growth rate. When it is about max 0.35 1/h the sister cells of Saccharomycet serevisiae and Candida utilis, are almost of the same volume but at the growth rate 0.05 1/h, their volume differs by 60-65% (Ivanov & Ugodchikov, 1984).

The cell dimorphism that occurs due to prolongation of the cell cycle was observed on Coulobacter sp. At high growth rate in enriched surrounding, all cells of the population have a fibber form, but after changing to less enriched surrounding, the duration of the cell cycle is increased, and two types of sister cells - so called shvermer and steam - emerge (Nikitin et al., 1979).

Under conditions preventing cell growth and division, in a population of the sporeforming bacteria, the dramatic dimorphism occurs. It started from the unequal division of the mother cell and ends by forming a "double cell organism". Its development leads to the death of one of the sister cells and another one is transformed into endospore (Douda, 1984).

The sharp dimorphism also is observed in Cyanobacteria. Under conditions of photosynthesis and nitrogen deficiency, part of the vegetative cells is transformed into heterocyst, which are incapable of division. Differentiation of heterocyst is accompanied by the formation of pole bridges between the heterocyts and the vegetative cells. Heterocyst are incapable of fixing CO2 and forming 02 and are dependent upon neighbor vegetal cells by the intermediate metabolites. Heterocyts, in turn, provide vegetal cells with compounds containing fixed nitrogen (Stanier et al., 1979).”


  • IVANOV V.N., UGODCHIKOV GA. The Cell Cycle of Microorganism and Heterogeneity of Their Population. Kiev, 1984.
  • HUZYK L.A., CLARC D.J. Nucleoside Triphosphate Pools in Synchronous Cultures of Escherichia coli. J. Bacteriol., 1971, v.108, #1, p.74.
  • NIKITIN D.I., ANDREEV LV., KOTOVA O.M. The Environment and Development Cycle Of The Oligotrophic Microorganisms. The Ontogenesis of the Microorganisms. Moscow, 1979.
  • DOUDA B.I.  The Distinction of the Cell Differentiation Spore Forming Bacteria. - In Book: The Ontogenesis of Microorganism. 1984.
  • STANIER P. AND ALL. The World of Microbes. V.3, 1979. STENT G., KALINDER R. The molecule genetic, 1981.



#2 Phil Geis

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Posted 11 April 2022 - 12:16 PM

Prob too late but


Huzyk Clark article is still av. https://www.ncbi.nlm...r00365-0100.pdf

and you might look through articles that cite it https://scholar.goog...iodt=0,10&hl=en


Ivanov & Ugodchikov article isn't available but is also cited some of which might be useful  https://scholar.goog...iodt=0,10&hl=en

Edited by Phil Geis, 11 April 2022 - 12:32 PM.

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