A. Pain, C. Hertz-Fowler
Nature Reviews Microbiology, 8(9):615, (2010)
The lifestyle of oomycetes varies from saprophytic to pathogenic. Phytophthora infestans is one of the most destructive potato pathogens, causing losses of US$6.7 billion annually worldwide. P. infestans str. T30-4 is the third Phytophthora species to be sequenced, after Phytophthora ramorum and Phytophthora sojae. At 240 Mbp, it has the largest genome of the sequenced chromalveolates1, 2. Comparison of the 3 Phytophthora spp. genomes with those of 10 other eukaryotes3 revealed numerous small duplications of 2–3 consecutive genes in the 3 Phytophthora spp., possibly indicating that a whole genome duplication event occurred in their common ancestor.