Genome Wheel showing representation of P. syringae pv. tomato DC3000 coding sequences in selected bacterial genomes as determined by BLASTP analysis of
A, the Pto DC3000 chromosome (NC_004578), B, Pto DC3000 plasmid pDC3000B (NC_004632), and C, Pto DC3000 plasmid pDC3000A (NC_004633). 
The outermost ring in A. represents Pto DC3000 with purple bars on the chromosome wheel indicating locations of predicted variable regions (Lindeberg, 2008). 
Presence of orthologs in other genomes is indicated on the remaining rings, with intensity of color proportional to the degree of sequence similarity. 
Locations of the Pto DC3000 hop islands (HI) are shown (Wei et al. 2007) and regions enriched for genes found in two or fewer of the genomes screened are indicated with red bars.
Genomes are grouped into four categories corresponding to pseudomonads, non-pseudomonad gamma-proteobacteria, xanthomonads, and beta-proteobacteria,
with each category delineated by a solid gray line.
The complete list of genomes from outer to innermost ring are as follows, with canonical phytopathogens are shown in orange: 

pseudomonads:

1. Pph 1448A,  
2. Psy B728a,
3. P. fluorescens PfO-1,
4. P. fluorescens Pf-5,
5. P. putida KT2440,
6. P. putida F1,
7. P. entomophila L48,
8. P. stutzeri A1501,
9. P. mendocina YMP,
10. P. aeruginosa UCBPP-PA14,
11. P. aeruginosa PAO1,
12. P. aeruginosa PA7

non-pseudomonad gamma-proteobacteria:

13. Photorhabdus luminescens subsp. laumondii TTO1,
14. Shewanella frigidimarina,
15. Shewanella sp. MR-4,
16. Yersinia pseudotuberculosis IP 32953
17. Yersinia pestis Antiqua,
18. Pectobacterium atrosepticum SCRI1043,
19. Salmonella enterica subsp. enterica serovar Choleraesuis str. SC-B67
20. Salmonella enterica subsp. enterica serovar Typhi str. CT18,
21. Salmonella enterica subsp. enterica serovar Paratyphi A str. ATCC 9150,
22. Escherichia coli O157:H7 EDL933,
23. Escherichia coli UTI89,
24. Escherichia coli K12,
25. Vibrio vulnificus YJ016,
26. Vibrio cholerae O1 biovar eltor str. N16961,
27. Shigella flexneri 5 str. 8401,
28. Aeromonas hydrophila subsp. hydrophila ATCC 7966

xanthomonads:

29. X. campestris pv. vesicatoria str. 85-10,
30. X. campestris pv. campestris str. ATCC 33913,
31. X. axonopodis pv. citri str. 306,
32. X. oryzae pv. oryzae MAFF 311018,
33. Xylella fastidiosa Temecula1

beta-proteobacteria:

34. Burkholderia xenovorans LB400,
35. Burkholderia cenocepacia HI2424,
36. Burkholderia thailandensis E264,
37. Burkholderia mallei ATCC 23344,
38. Ralstonia metallidurans CH34,
39. Ralstonia eutropha JMP134,
40. Ralstonia solanacearum GMI1000,
41. Bordetella bronchiseptica RB50