auxotrophy
National Institutes of Health
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InSaccharomyces cerevisiae a tryptophan requirement suppresses the rough colony phenotype that is produced by mutants at three…
SummaryThe action of some antibiotics on acetic acid bacteria has been tested. Streptomycin, Novobiocin, Ampicillin…
A mutant of Aspergillus nidulans, isolated for inability to form asexual spores (conidia) on complete medium, was found to regain…
The present results demonstrate that Chinese hamster embryo cell populations in culture can be adapted to grow in the presence of…
The phenotype of Escherichia coli K-12 carrying rho-15 in the genetic background DW319 ilv lacZ::IS1 is described. Seventy-eight…
Since methionine and (or) cysteine are required by a large percentage of natural auxotrophic Micrococcus strains isolated from…
A new p-fluorophenylalanine resistant mutant of Neurospora (fpr-1) was isolated. It is unaffected by the suppressor of a…
Auxotrophs were isolated from four effective strains of Rhizobium leguminosarum and R. trifolii for a study of the relationship…
SUMMARY: Spontaneous and u.v.-induced revertants were found to be unstable in serial subculture. Instability was manifested by (a…