A fungal disease caused by the pathogens Phytophthora fragariae var. fragariae and Phytophthora cactorum, leading to the decay of the root system and wilting of the plant's aerial organs.
In the reference
99
varieties
crop Garden strawberry,
where this is mentioned in the description.
The primary causal agent of Phytophthora root rot is Phytophthora fragariae var. fragariae, which infects the roots, manifesting as a reddening of the stele and the necrosis of lateral roots, giving the main root a "rat-tail" appearance. The species Phytophthora cactorum causes wilting, necrosis of the pistils, and the formation of hard, leathery spots on the berries.
The plant-pathogen interaction is described by the "gene-for-gene" model, with the resistance of cultivars determined by the dominant Rpf1 allele. To identify this gene in breeding, molecular markers such as SCAR-R1A for the resistance allele and OPO-16C for the recessive susceptibility allele are utilized.
General information about the subject — on the page
Late blight.
Varieties of Garden strawberry mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.