Diauxic growth

Diauxic growth

Diauxic growth is any cell growth characterized by cellular growth in two phases, and can be illustrated with a diauxic growth curve. Diauxic growth, meaning double growth, is caused by the presence of two sugars on a culture growth media, one of which is easier for the target bacterium to metabolize. This sugar is consumed first, which leads to rapid growth, followed by a lag phase, where the cellular machinery used to metabolize the second sugar is activated. After that, the bacterium experiences a slower growth phase, during which the second sugar is metabolized.


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Diauxic growth curve — A diauxic growth curve refers to the growth curve generated by an organism which has two growth peaks. The theory behind the diauxic growth curve stems from Jacques Monod s Ph.D. research in 1940. A simple example involves the bacterium E. coli,… …   Wikipedia

  • diauxic growth — (di awk sik) A biphasic growth pattern or response in which a microorganism, when exposed to two nutrients, initially uses one of them for growth and then alters its metabolism to make use of the second …   Dictionary of microbiology

  • Bacterial growth — Growth is shown as L = log(numbers) where numbers is the number of colony forming units per ml, versus T (time.) Bacterial growth is the division of one bacterium into two daughter cells in a process called binary fission. Providing no mutational …   Wikipedia

  • diauxic — di·aux·ic (di awkґsik) pertaining to or characterized by diauxie; implying two periods of growth separated by a lag period …   Medical dictionary

  • Diauxie — is a French word coined by Jacques Monod to mean two growth phases. The word is used in English in cell biology to describe the growth phases of a microorganism in batch culture as it metabolizes a mixture of two sugars. Rather than metabolizing… …   Wikipedia

  • Lac operon — The lac operon is an operon required for the transport and metabolism of lactose in Escherichia coli and some other enteric bacteria. It consists of three adjacent structural genes, a promoter, a terminator, and an operator. The lac operon is… …   Wikipedia

  • Superoxide dismutase — For other senses of the term SOD/Sod, see Sod (disambiguation). Superoxide dismutase Structure of a human Mn superoxide dismutase 2 tetramer.[1] …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”