Species | Clade | Featuresa | Possible adaptations |
---|---|---|---|
P. infestans | 1 | Sporangiophore apophyses | Mechanism of indeterminate sporangiophore growth |
P. capsici | 2 | Long pedicels 30- > 100 µm Umbellate sympodia | Splash dispersal, sporangial clustering and adherence to host surfaces |
P. litchii | 4 | Downy white mycelium Determinate sporangiophores and synchronous sporangial formation | Resistance to dessication on suberised fruit pericarp surface Rapid synchronized sporulation on exposed fruit pericarp surface |
P. heterospora | 4 | Pseudoconidia: direct germination, no papillum; formed alongside papillate zoosporic sporangia | Adaptation to both moist and drier habitats or seasonal or diurnal climate |
P. pinifolia | 6 | Narrowing of sporangiophores near sporangial bases | Facultative caducity, enabling aerial infection and dispersal in a Clade of soil- and water-borne species |
P. cinnamomi | 7 | Tough mycelium Stromata Lignitubers (intracellular hyphae encased in callose layers produced by the host cell) | Competitive growth through soil and litter Nutrient storage for seasonal hibernation and subsequent sporulation Long term survival |
P. lateralis | 8 | Stromata and sporangiomata | Pressure eruption through needle cuticle followed by sporulation |
P. hibernalis | 8 | Long pedicels 20–80 µm | Splash dispersal, sporangial clustering and adherence to host surfaces |
P. ramorum | 8 | Stromata and sporangiomata | Pressure eruption through tough leaf cuticle or fruit periderm followed by sporulation |
P. constricta | 9 | Sporangiophore constrictions near the sporangial bases | Facultative caducity and aerial dispersal in a Clade of soil- and waterborne species |
P. insolita | 9 | Production of oospores without antheridia (presumed gametangial apomixis) | Inbreeding mechanism. Survival in periodically dry waterways without cost of less adapted recombinant offspring |