Pluralibacter pyrinus

Pluralibacter pyrinus (formerly Enterobacter pyrinus) is a Gram-negative, motile, facultatively-anaerobic, rod-shaped bacterium. "P. pyrinus" is the causitive agent of brown leaf spot disease of pear trees.
Background.
The cause of brown leaf spot disease affecting pear trees in South Korea was first identified as a novel bacterial infection in 1990. The proposed name for the species was "Erwinia pirina", but this name was not validly published. In 1993, further research grouped the organism in the genus "Enterobacter" as "E. pyrinus." Later studies of the genus "Enterobacter" lead to the species being reclassified into the novel genus "Pluralibacter" in 2013. The species name is derived from the Greek word "pŷr", which means pear.