Figure 4

PCR amplification of a subset of the 23 predicted P. cactorum unigenes. PCR amplification was performed on P. cactorum isolate 10300 genomic DNA with 23 primer pairs, and the amplicons were electrophoresed on an agarose gel (1.2%). Lane Marker, DL-2000 DNA marker ladder (TaKaRa, Dalian, China). Gene names and categories are listed on the top of the gel picture. The star indicates a non-specific amplification band for PcRXLR15. Lane Water, water control with PcNLP3 primers (Additional file 12).