Figure 1.

Physical maps of pCPP2156 and pCPP2157, which contain the E. chrysanthemi hrp region, and comparison of the hrp regions of E. chrysanthemi and E. amylovora (19–21, 46–48). Arrow-shaped boxes denote putative transcriptional units. Shaded areas in E. amylovora hnp region denote hrp/hrc genes. Dashed boxes denote transcriptional units predicted on the basis of the homology and spacing of partially sequenced regions (shaded areas) in comparison with the corresponding E. amylovora hrp genes. The filled triangle indicates the location of mini-Tn5Cm in pCPP2368.