The formation and structures of cystites of Arthrobacter ureafaciens NRIC 0157(T) induced by antibiotics

The cystite formation of Arthrobacter ureafaciens NRIC 0157(T) was induced by some antibiotics, and the addition of tetracycline at a lag phase was ef fective for cystite formation in YPM liquid medium. Cystites differed from vegetative cells in the cell wall structure, protein content, and water con tent. Furthermore, the characteristics and structures of cystites induced b y tetracycline were similar to those of cystites produced by nutritional im balance in CT medium. Consequently, various triggers would induce cystite f ormation. It is interesting that cystite formation was found in part of the Arthrobacter strains and seemed to correlate with the type of peptidoglyca n.