Which organism produces the pigment pyocyanin?

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Multiple Choice

Which organism produces the pigment pyocyanin?

Explanation:
Pyocyanin production is characteristic of Pseudomonas aeruginosa. This blue-green pigment, a phenazine, is produced by the organism and gives colonies a distinctive blue-green color on culture media. Pyocyanin helps distinguish P. aeruginosa in the lab, often alongside pyoverdine, which is yellow-green and fluorescent. Other nonfermenting Gram-negative rods—such as Pseudomonas putida, Acinetobacter baumannii, and Burkholderia cepacia—do not produce this classic pigment, so the presence of pyocyanin most strongly points to Pseudomonas aeruginosa.

Pyocyanin production is characteristic of Pseudomonas aeruginosa. This blue-green pigment, a phenazine, is produced by the organism and gives colonies a distinctive blue-green color on culture media. Pyocyanin helps distinguish P. aeruginosa in the lab, often alongside pyoverdine, which is yellow-green and fluorescent. Other nonfermenting Gram-negative rods—such as Pseudomonas putida, Acinetobacter baumannii, and Burkholderia cepacia—do not produce this classic pigment, so the presence of pyocyanin most strongly points to Pseudomonas aeruginosa.

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