TABLE 3.
Immunity patterns of MC1061 lysogens and phages isolated from STEC strains
| Lysogen | Immunity patterna with phage: |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| φD155- Stx1 | φE45040- Stx2 | φE83819- Stx1 | φE83819- Stx2 | φE85539- Stx21 | φE85539- Stx22 | φE86654- Stx1 | φE86654- Stx2 | φPS14- Stx2 | |
| MC1061(φD155-Stx1) | (−) | ++ | ++ | ++ | ++ | ++ | ++ | ++ | ++ |
| MC1061(φE45040-Stx2) | ++ | (−) | ++ | ++ | ++ | ++ | ++ | ++ | − |
| MC1061(φE83819-Stx1) | ++ | − | (−) | − | ++ | ++ | ++ | + | − |
| MC1061(φE83819-Stx2) | ++ | ++ | ++ | (−) | ++ | ++ | ++ | ++ | ++ |
| MC1061(φE85539-Stx21) | ++ | − | ++ | ++ | (−) | ++ | ++ | ++ | − |
| MC1061(φE85539-Stx22) | ++ | − | ++ | ++ | − | (−) | + | − | − |
| MC1061(φE86654-Stx1) | ++ | ++ | ++ | ++ | ++ | ++ | (−) | ++ | ++ |
| MC1061(φE86654-Stx2) | ++ | ++ | ++ | ++ | ++ | ++ | + | (−) | − |
| MC1061(φPS14-Stx2) | ++ | ++ | ++ | ++ | ++ | ++ | ++ | ++ | (−) |
a
Pattern: (−), phage plated against its own lysogen; ++, lytic infection (PFU count was identical to that obtained from infection of naive MC1061); +, lytic infection (PFU count was reduced several orders of magnitude compared to infection of naive MC1061); −, no plaques found.