Gram-negative rods, motile with 1-3 polar flagella and aerobic. Colonies on nutrient agar plates are round, convex, glistening, translucent and white. Growth factors are not required. Poly-B-hydroxybutyrate granules are not accumulated. Fluorescent pigment is not produced on King's B medium. Positive for following reactions: catalase, production of ammonia, levan and reducing substance from sucrose, hydrolysis of casein and Tween 80, and tobacco hypersensitive reaction. Negative for following reactions: oxidase, arginine dihydrolase, tyrosinase, urease, phenylalanine deaminase, lecithinase, reduction of nitrate, nitrate respiration, gelatin liquefaction, production of H2S, indole and 2-keto-gluconate, hydrolysis of esculin, arbutin, starch and cotton-seed-oil, and potato rot test. Maximum growth temperature is 30C. Utilizes glucose, L-arabinose, D-ribose, fructose, sucrose, raffinose, mannitol, glycerol, inositol, sorbitol, gluconate, glycerate, malonate, acetate, glutarate, saccharate, L-malate, succinate, D-quinate, L-asparagine, L-serine, L-arginine, L-leucine, L-tyrosine and betaine. Does not utilize D-arabinose, D-xylose, lactose, maltose, melibiose, L-rhamnose, cellobiose, trehalose, melezitose, dulcitol, adonitol, salicin, arbutin, a-methyl-D-glucoside triacetin DL-tartrate, DL-lactate, formate, n-butyrate, propionate, mesaconate, n-caprate, sebacate, levulinate, anthranilate, L-valine, L-isoleucine, B-alanine, L-histidine, trigonelline. Pathogenic on Actinidia chinensis, Prunus persica and Prunus mume.

Pathotype strain is Kw11 (ICMP 9617)