Isolation of strain 20WA0182 T from a diseased onion plant grown in the Columbia Basin of Washington State, USA, led to preliminary identification as a member of the genus Ewingella . The strain was characterised as a Gram-stain-negative, facultative anaerobe that is rod-shaped, motile with polar flagella, catalase positive, and oxidase negative. The strain 20WA0182 T isolated was pathogenic to yellow onion bulbs, weakly patho...