Which organism is detected by UV fluorescence and nitrate reduction?

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Multiple Choice

Which organism is detected by UV fluorescence and nitrate reduction?

Veillonella are anaerobic Gram-negative cocci that are known to reduce nitrate and to produce porphyrin compounds that fluoresce under ultraviolet light. Seeing both a positive nitrate reduction test and a UV fluorescence signal together points to Veillonella, because this dual trait set is characteristic for identifying this genus among common oral and gut anaerobes. Other organisms listed do not consistently show this specific combination, so the two-test pattern most strongly aligns with Veillonella.

Veillonella are anaerobic Gram-negative cocci that are known to reduce nitrate and to produce porphyrin compounds that fluoresce under ultraviolet light. Seeing both a positive nitrate reduction test and a UV fluorescence signal together points to Veillonella, because this dual trait set is characteristic for identifying this genus among common oral and gut anaerobes. Other organisms listed do not consistently show this specific combination, so the two-test pattern most strongly aligns with Veillonella.

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