Origin, properties of Ralstonia solanacearum (GM1000) genes used in this study as plasmid or genomic donor DNA; plasmid transformation frequencies and number of Chi-like sequences detected within the 2 kb long DNA positions.

aTOPO recombinant plasmids with R. solanacearum inserts labelled by an aacC3-IV gene-cassette conferring resistance to gentamycin (GmR)bTargeted Chromosomal Position (versus Megaplasmid)nd, not determined