Phytophthora sojae

Taxobox
color = khaki
name = "Phytophthora sojae"
domain = Eukaryota
unranked_phylum = Chromista
phylum = Heterokontophyta
classis = Oomycetes
ordo = Peronosporales
familia = Pythiaceae
genus = "Phytophthora"
species = "P. sojae"
binomial = "Phytophthora sojae"

Phytophthora sojae is an oomycete and a soil-borne plant pathogen that causes stem and root rot of soybean. This is a prevalent disease in most soybean growing regions, and a major cause of crop loss. In wet conditions the pathogen produces zoospores that move in water and are attracted to soybean roots. Zoospores can attach to roots, germinate and infect the plant tissues. Diseased roots develop lesions that may spread up the stem and eventually kill the entire plant. "Phytophthora sojae" also produces oospores that can remain dormant in the soil over the winter, or longer, and germinate when conditions are favourable. Oospores may also be spread by animals or machinery.

"Phytophthora sojae" is a diploid organism with a genome size of 95 Mbp.