Table 2.
Currently recognized nomenclature and behavioural characteristics of Phytophthora ramorum clonal lineages (adapted from Ivors et al., 2006).
| Clonal lineage | Current distribution | Habitat | Mating type | Colony growth | Colony stability | Aggressiveness |
|---|---|---|---|---|---|---|
| EU1 | EU, North America | Nurseries | A1 (A2)† | fast | Stable | Higher |
| NA1 | North America | Forests, nurseries | A2 | slow | Unstable | Lower |
| NA2 | USA | Nurseries | A2 | fast | Stable | ND* |
*
ND = not determined.
†
EU1 is predominately mating type A1 (Brasier and Kirk, 2004; Werres and Kaminsky, 2005), yet several A2 EU1 isolates have been identified in Belgium (Werres and De Merlier, 2003).