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The selective advantage of inducible maltase in yeast (Saccharomyces cerevisiae)

✍ Scribed by P. Lange; K. Wöhrmann

Publisher
Springer Netherlands
Year
1981
Tongue
English
Weight
395 KB
Volume
57
Category
Article
ISSN
0016-6707

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✦ Synopsis

Competition experiments between yeast strains which were either inducible or constitutive for maltase synthesis were performed. The experiments showed a selective advantage of ceils with an inducible maltase over cells with a constitutive maltase. However, with respect to the carbon source of the media, the most remarkable decrease of frequency of constitutive cells was observed on maltose and not on glucose as could be expected. It could be shown that the higher amount of protein and not the overproduction of maltase by the constitutive strain is responsible for the lower growth rates of these strains. The results are in agreement with the energy conservation hypothesis.

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