Fig 3.

Genetic distance tree based on sequence data from the expanded holC MLST region showing representatives of the five X. fastidiosa subsp. pauca MLST sequence types (STs) and the other X. fastidiosa subspecies. The tree is consistent with two intersubspecific recombination events, one causing the similarity of ST16 to X. fastidiosa subsp. multiplex and X. fastidiosa subsp. sandyi and another causing the similarity of ST01 (X. fastidiosa subsp. fastidiosa) to X. fastidiosa subsp. pauca. The numbers at each node indicate the bootstrap percentages. For the isolates used, see Table 2.