Determination of pili by conjugative bacterial drug resistance plasmids of incompatibility groups B, C, H, J, K, M, V, and X

Abstract

Representative plasmids from incompatibility groups B, C, H, J, K, M, V and X were transferred to bald strains of Escherichia coli or Salmonella typhimurium. By using a new technique, pili were detected by EM for each incompatibility group. Morphology varied but was similar for plasmids within a group. These findings suggest that all conjugative plasmids in the Enterobacteriaceae may determine pili.