Karyotyping

Chromosome instability in industrial strains of Saccharomyces cerevisiae batch cultivated under laboratory conditions

B. T. L. Lucena, Silva-Filho, E. A., Coimbra, M. R. M., Morais, J. O. F., Simões, D. A., and Morais, Jr., M. A., Chromosome instability in industrial strains of Saccharomyces cerevisiae batch cultivated under laboratory conditions, vol. 6, pp. 1072-1084, 2007.

Industrial ethanol fermentation is a complex microbiological process to which yeast cells must adapt for survival. One of the mechanisms for adaptation is thought to involve chromosome rearrangements. We found that changes in chromosome banding patterns measured by pulsed-field gel electrophoresis can also be produced in laboratory media under simulated industrial conditions. Based on analysis of their generational variation, we found that these chromosome changes were specific to the genetic backgrounds of the initial strains.

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