Janthinobacterium

{{Short description|Genus of bacteria}}

{{Italic title}}

{{Automatic_taxobox

| taxon = Janthinobacterium

| image_alt = The bacterium Janthinobacterium lividum on a TY agar plate

| image_caption = The bacterium Janthinobacterium lividum on a TY agar plate

| image = Janthinobacterium_lividum_on_TY.png

| authority = De Ley et al. 1978 (Approved Lists 1980) emend. Lincoln et al. 1999

| type_species = Janthinobacterium lividum

| subdivision_ranks = Species

| subdivision =

J. agaricidamnosum{{cite journal |title=Genus: Janthinobacterium |journal=lpsn.dsmz.de |url=https://lpsn.dsmz.de/genus/janthinobacterium |language=en}}

J. aquaticum

J. lividum

J. psychrotolerans

J. rivuli

J. svalbardensis

J. violaceinigrum

}}

Janthinobacterium is a genus of Gram-negative soil bacteria. The name is from Latin janthinus, which means "violet" or "violet-blue". It produces distinct purple-violet pigments among which are jagaricin and violacein, manifests diverse energy metabolism abilities, and tolerates cold, ultraviolet radiation, and other environmental stressors.{{Cite web |url=https://lpsn.dsmz.de/genus/janthinobacterium |title=Archived copy |access-date=2012-06-12 }}