Phytophthora sojae infects cultivated soybean (Glycine
max) and Glycine soja. P. sojae causes root
and stem rot at all reproductive stages of growth. Infections
typically occur after heavy rains on poorly drained soils. Root
extudates from the host attract P. sojae, which will then
penetrate the root cortex and form oospores. Later in infection,
stem cankers, wilting and chlorosis will become apparent and lead
to the death of the plant. The oospores allow the pathogen to
survive in soil and plant debris.
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