auxotroph

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auxotroph

 [awk´so-trōf]
an auxotrophic organism.

aux·o·troph

(awk'sō-trōf),
A mutant microorganism that requires some nutrient that is not normally required by the organism (prototroph) from which the mutant was derived. Compare: polyauxotroph, monoauxotroph.
[auxo- + G. trophē, nourishment]

auxotroph

(ôk′sə-trŏf, -trōf′)
n.
An organism, such as a strain of bacteria, that has lost the ability to synthesize certain substances required for its growth and metabolism as the result of mutational changes.

aux·o·troph

(awk'sō-trōf)
A mutant microorganism that requires some nutrient that is not required by the organism (prototroph) from which the mutant was derived.
[auxo- + G. trophē, nourishment]

auxotroph

a mutant strain of a microorganism that requires growth factors, for example AMINO ACIDS, in addition to those required by the WILD TYPE and therefore will not grow on MINIMAL MEDIUM which will support the growth of the wild type.

auxotroph

an auxotrophic organism.
References in periodicals archive ?
Culture conditions for the production of L-glutamic acid from n-paraffins by glycerol auxotroph GL-21.
Ten auxotrophs obtained were screened for alginate production in comparison to wild A.
UV light mutagenesis and isolation of uracil auxotrophs
In the present study, a uracil auxotroph mutant of S.
To isolate ura3 auxotroph mutants, approximately [10.
These mutants are called auxotrophs and have to have complete medium to grow.
These donors were all auxotrophs, meaning that they were unable to synthesize at least one amino acid essential for growth in the environment.
Selection for trytophan auxotrophs of Escherichia cold in glucose-limited chemostrats as a test of the energy conservation hypothesis of evolution.
Selection for tryptophan auxotrophs of Escherichia coli in glucose-limited chemostats as a test of the energy conservation hypothesis of evolution.
To achieve maximum production it is necessary to overcome these regulation by developing different auxotrophs.
The parent strain was further mutated to different auxotrophs and the potency for lysine was studied in different nutritional media.