Three recently acknowledged Escherichia species strikingly differ in the incidence of bacteriocinogenic and lysogenic strains.
The incidence of bacteriocinogeny and lysogeny was followed in bacteria of 3 recently acknowledged species of the genus Escherichia: E. hermanii, E. vulneris and E. fergusonii. Almost all of the strains examined were of human origin. In 30 strains of E. hermanii no one was found bacteriocinogenic while 57% were lysogenic, in 30 strains of E. vulneris none was found to be bacteriocinogenic and only 10% were lysogenic, and in 50 strains E. fergusonii 12% were bacteriocinogenic and 40% lysogenic. From the 6 bacteriocinogenic strains of E. fergusonii, 3 were producers of colicin E1, 2 of colicin Ib and 1 of colicin Ia. In addition, 3 E. fergusonii strains produced aerobactin.
Smarda
Jan
J
Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic. jsmarda@med.muni.cz
Smajs
David
D
Lhotová
Hana
H
D001426:Bacterial Proteins; D001430:Bacteriocins / Q000096:biosynthesis* / Q000235:genetics; D001435:Bacteriophages / Q000235:genetics / Q000254:growth & development / Q000302:isolation & purification*; D003087:Colicins / Q000032:analysis / Q000096:biosynthesis; D004925:Escherichia / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism* / Q000821:virology*; D006801:Humans; D006877:Hydroxamic Acids / Q000032:analysis; D008242:Lysogeny
D001426:Bacterial Proteins; D001430:Bacteriocins; D003087:Colicins; D006877:Hydroxamic Acids; C031819:aerobactin