Definition of "violacein" []

• A violet pigment produced by certain bacteria. (noun)

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• "Lab experiments last year showed that J. liv produces a metabolite, violacein, that is toxic to the chytrid fungus."
• "Colonies are purplish-black due to its water-insoluble pigment called violacein."
• "There is a correlation between violacein production, biofilm formation, and greater survival, suggesting that it may play a role in response to environmental stress."