Persistence of Two Campylobacter jejuni Strains in Soil and on Spinach Plants

Table 1

Campylobacter jejuni cells detected on spinach shoot tissue.

Day		C. jejuni strain 6824				C. jejuni strain 81116
0	5.0	5.5	5.1	5.1	5.8	5.2	6.3	5.6	5.5	6.5
7	4.5	4.2	n.d.	n.d.	5.0	4.1	4.6	5.8	5.9	5.0
14	n.d.	n.d.	4.9	4.3	4.4	n.d.	5.3	4.4	n.d.	n.d.
21	5.5	4.4	n.d.	n.d.	n.d.	n.d.	5.3	5.5	4.6	4.9

The numbers of Campylobacter jejuni cells from two different strains detected on spinach shoots in five replicated pot cultures using real-time PCR. The values correspond to log mapA gene copy numbers g⁻¹ spinach shoot tissue, and the sampling days are after C. jejuni inoculation. n.d.: not detected.