Specific detection and quantification of Ralstonia pseudosolanacearum race 4 strains from Zingiberaceae plant cultivation soil by MPN-PCR

Abstract

The most probable number-polymerase chain reaction (MPN-PCR) method was assessed for the specific detection and quantification of Ralstonia pseudosolanacearum race 4 strains in soil from Zingiberaceae fields in Japan. Based on the genome sequence analysis of two bacterial strains [MAFF 211479 (type I) and MAFF 211472 (type II)] isolated from ginger, race 4 type I- and type II-specific nested PCR primer sets were designed, respectively. The MPN-PCR using these primer sets efficiently detected and quantified the pathogen in naturally and artificially infested soils.