A real-time PCR assay for the quantitative detection of Ralstonia solanacearum in the horticultural soil and plant tissues.
A specific and rapid real-time PCR assay for detecting Ralstonia solanacearum in the horticultural soil and plant tissues was developed in this study. The specific primers RSF/RSR were designed based on the upstream region of UDP-3-O-acyl-GlcNAc deacetylase gene from R. solanacearum, and a PCR product of 159 bp was amplified specifically from 28 strains of R. solanacearum, which represent all genetically diverse AluI types and all 6 biovars, but not from any other nontarget species. The detection limit of 102 CFU/g tomato stem and horticultural soil was achieved in this real-time PCR assay. The high sensitivity and specificity observed with filed samples as well as with artificially infected samples suggested that this method might be a useful tool for detection and quantification of R. solanacearum in precise forecast and diagnosis.
Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.
Yun
Y
Chen
Wen-Zhi
WZ
Zhang
Xin
X
Liu
Zhong-Hua
ZH
Ma
Bo
B
Li
Caitilyn
C
Allen
Jian-Hua
JH
Guo
D001426:Bacterial Proteins / Q000235:genetics; D017931:DNA Primers / Q000235:genetics; D018551:Solanum lycopersicum / Q000382:microbiology*; D016133:Polymerase Chain Reaction / Q000379:methods*; D043368:Ralstonia solanacearum / Q000235:genetics / Q000302:isolation & purification*; D012988:Soil Microbiology
D001426:Bacterial Proteins; D017931:DNA Primers