Diauxic shift

From Wikipedia, the free encyclopedia

You have new messages (last change).
There are very few or no other articles that link to this one.
Please help introduce links in articles on related topics. After links have been created, remove this message.
This article has been tagged since July 2006.

Diauxic shift, also known as Diauxic growth, is the phenomenon in which a microorganism, such as a bacterium or yeast, exhausts its preferred nutrient and switches to use of an alternate energy source. For example, in the case of E. coli bacteria, when provided with a mixture of the sugars glucose and lactose, the bacteria first use up glucose before starting to metabolize lactose. Similarly, in the case of yeast (a fungus), the diauxic shift represents a change in metabolism from glucose fermentation (anaerobic respiration) to aerobic respiration as the glucose is depleted. This shift is accompanied by a change from the usage of glycolysis to gluconeogenesis and the glyoxylate cycle.

[edit] References

  • Johnston M, Carlson M. 1992. Regulation of carbon and phosphate utilization. In The Molecular and Cellular Biology of the Yeast Saccharomyces cerevisiae, Jones EW , Pringle JR , Broach JR (eds). Cold Spring Harbor Laboratory Press: New York; 193-281.


This ecology-related article is a stub. You can help Wikipedia by expanding it.
Retrieved from "http://en.wikipedia.org../../../d/i/a/Diauxic_shift.html"