Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A violet pigment produced by certain bacteria.

Etymologies

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Examples

  • Lab experiments last year showed that J. liv produces a metabolite, violacein, that is toxic to the chytrid fungus.

    NYT > Global Home

  • Colonies are purplish-black due to its water-insoluble pigment called violacein.

    Small Things Considered

  • There is a correlation between violacein production, biofilm formation, and greater survival, suggesting that it may play a role in response to environmental stress.

    Small Things Considered

  • While violacein benefits the host directly, it is also known to be toxic against protozoa, and fungi.

    Small Things Considered

  • Results showed that adding J. lividum to the skin of the salamander increased the concentration levels of violacein already present and contributed to survival following experimental exposure to the fungus.

    Health News from Medical News Today

  • "Our study suggests that a threshold violacein concentration of about 18 μM on a salamander's skin prevents mortality and morbidity caused by B. dendrobatidis," say the researchers.

    Health News from Medical News Today

  • The bacterially produced metabolite violacein is associated with survival of amphibians infected with a lethal fungus.

    Health News from Medical News Today

  • In a prior study Janthinobacterium lividum was identified as a bacterium that produces the anti-B. dendrobatidis metabolite violacein.

    Health News from Medical News Today

  • "We show that over one-half of individuals in nature support antifungal bacteria that produce violacein, which suggests that there is a mutualism between violacein-producing bacteria and P. cinereus and that adding J. lividum is effective for protecting individuals that lack violacein-producing skin bacteria.

    Health News from Medical News Today

  • Plethodon cinereus) at concentration levels capable of inhibiting B. dendrobatidis, indicating a mutualistic community of violacein-producing bacteria.

    Health News from Medical News Today

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