(redirected from auxotrophs)
Also found in: Medical.


 (ôk′sə-trŏf, -trōf′)
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.

[Back-formation from auxotrophic.]


(Microbiology) a mutant strain of microorganism having nutritional requirements additional to those of the normal organism
ˌauxoˈtrophic adj
References in periodicals archive ?
Reactive oxygen species are the major antibacterials * against Salmonella typhimurium purine auxotrophs in the phagosome of RAW 264.
Thus, they concluded that cadaverine synthesis in polyamine starved polyamine auxotrophs must occur via release of feedback inhibition of lysine decarboxylase rather than by induction of this enzyme.