Also found in: Dictionary, Encyclopedia, Wikipedia.


1. Pertaining to a prototroph.
2. Denoting the ability to undertake anabolism or to obtain nourishment from a single source, as with iron, sulfur, or nitrifying bacteria or photosynthesizing plants.


(prō′tə-trō′fĭk, -trŏf′ĭk)
Having the same metabolic capabilities and nutritional requirements as the wild type parent strain: prototrophic bacteria.

pro′to·troph′, pro′to·troph′y n.
References in periodicals archive ?
Both recombinant genotypes are prototrophic and so can grow without supplemental amino acids.
The latter two strains revert to a prototrophic [his.sup.+] phenotype via a specific base-substitution event (TA7001, AT to GC, and TA7004, GC to AT) (Gee et al.