Phytophthora sojae

Abstract

Oomycetes including Phytophthora species are eukaryotic organisms that morphologically resemble filamentous fungi, but are phylogenetically related to diatoms and brown algae in the Stramenopiles. Most of Phytophthora species are notorious plant pathogens that are responsible for the great damage on ornamentally and agriculturally important plants. One species, P. sojae, is the causal agent of root and stem rot in soybean and has been reported throughout most soybean-growing regions globally. In China, it has been classified as one of threatening quarantine pests due to the potential high risk to our soybean production, although some areas have already observed its presence. Here, we first provide an overview of the spread, distribution and impact of P. sojae in China. Then, the basis of invasiveness of the species into China is discussed, including its host range, life style, favorable environmental factors and molecular arms. We also summarize the control strategies of P. sojae in China, including quarantine and surveillance measures, pathogen detection methods, soybean resistance utilization, chemical application, biological and agricultural control methods. In the end, future work related to this species is suggested. We hope that the knowledge presented here can help us design better control strategies for this pathogen in China.