|Dorrance, A -|
Submitted to: Genetics and Genomics: Diversity, Interactions, and Research Tools
Publication Type: Book / Chapter
Publication Acceptance Date: November 5, 2008
Publication Date: July 1, 2009
Citation: Dorrance, A., Grunwald, N.J. 2009. Phytophthora sojae: Diversity among and within populations. In: Lamour, K. and Kamoun S. editors. Oomycete Genetics and Genomics: Diversity, Interactions, and Research Tools. Hoboken, NJ. John Wiley and Sons Inc. p. 197-212. Technical Abstract: Soybean production is increasing around the world and, to no surprise, so are the reports of soybean diseases caused by Phytophthora sojae, including Phytophthora seed, root, and stem rot. Phytophthora sojae is a diploid oomycete, which is homothallic and is limited to primarily one host: the soybean. It is soilborne, and when soils are saturated, this oomycete produces nondehiscent sporangia, which are nonpapillate. The development and spread of zoospores and subsequent infection of soybean roots is favored by saturated soil conditions. Oospores are readily produced in susceptible soybean roots and can survive in crop residues and soil for many years. This book chapter discusses recent research on the pathogenic and genetic diversity of P. sojae.