Identification of a transmissible plasmid from an Argentine S. meliloti strain which can be mobilised by conjugative helper functions of the European strain S. meliloti GR4

PISTORIO M.; DEL PAPA M. F.; BALAGUÉ L. J.; LAGARES A.

FEMS MICROBIOLOGY LETTERS

WILEY-BLACKWELL PUBLISHING, INC

Año: 2003 vol. 225 p. 15 - 21

0378-1097

We describe in this work the identification and the conjugal properties of two cryptic plasmids present in the strain Sinorhizobium meliloti LPU88 isolated from an Argentine soil. One of the plasmids, pSmeLPU88b (22 kb), could be mobilised from different S. meliloti strains to other bacteria by conjugation only if the other plasmid, pSmeLPU88a (139 kb), was present. This latter plasmid, however, could not be transferred via conjugation (frequency