Pseudomonas spp. causing sheath rot of rice
EPPO Reporting Service n° 503/02, and Paul & Smith (Bulletin OEPP/EPPO Bulletin 19, 33-42), drew attention to several new diseases of rice caused by Pseudomonas spp. Zeigler and Alvarez (1990) now report that, after a study of 95 bacteria causing grain and sheath rot of rice and f 21 non-pathogenic fluorescent pseudomonas isolated from the same source, four Pseudomonas spp. could be shown to be pathogenic: P. fuscovaginae, P. syringae pv. syringae, P. avenae, P. glumae.
These pathogens, formerly believed to be of limited distribution, are shown to be distributed worldwide. For example, P. fuscovaqinae has recently been reported in Mexico (Duveiller & Maraite, Plant Disease, 74, 932-935).
Zeigler, R.S. & Alvarez, E., Plant Disease, 74, 917- 922.