A panel of molecular markers specific to Xanthomonas hortorum pv. carotae (Xhc). An inverse image of a 1 × Tris‐Acetate EDTA (TAE) agarose gel showing amplified products from genomic DNA extracted from Xhc M081. The primer pairs used are shown along the top. Their expected fragment lengths were 1041, 1266, 620, 1119, 875, 517, 651, 900 and 300 bp, respectively. Primer pairs 9B and 3S are from Meng et al. (2004). The 500 and 1000 base markers from the 100‐bp DNA ladder (NEB, Quick‐Load) are shown.