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. 2019 Aug 8;9:11530. doi: 10.1038/s41598-019-47976-x

Figure 9.

Figure 9

E. amylovora total, live and culturable cell populations in fire blight cankers on apple (cv. Honeycrisp). Fire blight infections started in early-spring of 2016, and cankers were collected in mid-summer (July 2016) (a) and mid-winter (January 2017) (b). Samples were homogenized with 0.1xAMB. Total cell counts were performed by dPCR, using primers Ams06KbF and Ams189R. For v-dPCR, sample sub-aliquots were treated with PMA, PMAxx, and combinations of both dyes with SDS (+SDS) or PMA Enhancer (+E). Culturable cell counts were performed by spread plate on SNAN and CCT media. Three cankers were analyzed per time period. Each column represents mean values of total, viable or culturable cell counts of three different cankers, with error bars indicating the SD.