Ancylobacter sonchi is a bacterial species in the family Xanthobacteraceae.
Discovery Ancylobacter sonchi was first isolated from the rhizoshpere of Sonchus arvensis, commonly known as field sow thistle, in Pushchino, Moscow.
Description Ancylobacter sonchi is rod-shaped, with widths of 0.4-.0.5 µm and lengths of 0.6-1.0 µm. When grown on methanol mineral salts medium, colonies appear white, shiny, opaque, and convex. When grown on R2A agar, colonies appear yellow, translucent, and glossy. It is gram-negative, strictly aerobic, and motile. It grows at temperatures of 10-30°C, with optimal growth at temperatures of 22-29°C. It grows at pH levels of 6.0-9.0. It is capable of using many common sugars for growth, including glucose, arabinose, xylose, and fructose. It is catalase-, oxidase-, and urease-positive.
Phylogeny Within Ancylobacter, A. sonchi is believed to be most closely related to A. defluvii and A. pratisalsi.
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