Xanthomonas arboricola pv. pruni found in Idaho and Oregon (US)
Symptoms of leaf spot, fruit spots and twig cankers were observed in Japanese plum (Prunus salicina cv. Friar) orchards in Southwest Idaho and Eastern Oregon (US). Standard bacterial tests showed the presence of Xanthomonas arboricola pv. pruni (EPPO A2 quarantine pest). It is noted that the disease was not observed in other cultivars of Japanese or European plums growing in the vicinity of infected orchards. This is the first report of Xanthomonas arboricola pv. pruni in Idaho and Oregon.
Sources
Mohan, S.K.; Bijman, V.P. (2000) Occurrence of bacterial leaf spot of plum in Idaho and Oregon. Abstract of a paper presented at the APS Pacific Division meeting in Riverside, California, 1999-06-15/16, USA.
Phytopathology, 90(6), S 120.