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 ?
One lysine mutant was characterized as an auxotroph on selective media, and the transposon-inserted gene fragment confirmed as incorporated into the chromosome by a Southern blot (N=1).
When a polyamine auxotroph is grown under conditions of polyamine starvation, cadaverine is present in the perchloric acid-extractable pool.