A mutant microorganism that can grow only when supplied with a nutrient that is not needed by the wild type.
(awks´ o trofe) [Gr. auxanein: to grow + trophe: food] • A mutant form of an organism that requires a nutrient or nutrients not required by the wild type, or reference, form of the organism. (Contrast with prototroph.)
A microorganism that has lost the ability to synthesize an essential nutrient (Lecture: The Bacterial Cell: Structure, Function, Growth, and Gene Regulation II, 1/29/02)
Organism unable to synthesize an organic molecule which is required for its growth: when the compound is given to the organism with the other nutrients it requires, growth of the organism may occur.
An organism with specific nutritional requirements.
a bacterial strain that can grow only when the medium is supplemented with an organic substance that is not required by the corresponding wild-type bacterium
a microorganism possessing a mutation in a gene that affects its ability to synthesize a crucial organic compound
a strain that requires one or more organic factors for growth, in addition to a carbon source
A mutant that will only grow when a particular nutritional requirement (e.g. amino acid, nucleotide, or vitamin) is provided.
A mutant cell or microorganism that grows only when the medium contains a specific nutrient or metabolite that is not required by the wild type.
a mutant microorganism that can be grown only upon minimal medium that has been supplemented with growth factors not required by wildtype strains
A strain of microorganism lacking the ability to synthesize one or more essential growth factors. ( 16)