Table 1.
Plant reactions to DC3000 and its hrpA and hrpS mutants
| Bacteria | Arabidopsis (Col) | Tobacco (Samsun NN) | Tomato (Rio Grande-PtoR) |
|---|---|---|---|
| DC3000, avrPto+ | D | HR | HR |
| hrpS, avrPto+ | Null | Null | Null |
| hrpA, avrPto+ | Null | Null | Null |
| hrpA/pHRPA, avrPto+ | D | HR | HR |
| DC3000/pAVRB | HR | HR | HR |
| hrpS/pAVRB | Null | Null | NA |
| hrpA/pAVRB | Null | Null | NA |
HR, rapid, localized tissue collapse in the infiltrated area; D, tissue chlorosis and necrosis typical of disease symptoms caused by DC3000; Null, no visible plant reactions; NA, not assayed. DC3000 and its derivatives, hrpA and hrpS mutants, contain avrPto in the chromosome (38).