Serratia marcescens pigment production is enhanced by which condition?

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Multiple Choice

Serratia marcescens pigment production is enhanced by which condition?

Explanation:
Temperature controls pigment production in Serratia marcescens. The red pigment prodigiosin is expressed best at ambient, room-like temperatures (around 20–25°C). At body temperature (about 37°C) pigment production is repressed, and at even higher temperatures (like 42°C) it’s largely absent. Because of this, growing the organism at roughly 22°C enhances pigment formation, producing the characteristic red coloration. Media type matters less for pigment, so the key factor is keeping the culture at room temperature rather than at higher temperatures.

Temperature controls pigment production in Serratia marcescens. The red pigment prodigiosin is expressed best at ambient, room-like temperatures (around 20–25°C). At body temperature (about 37°C) pigment production is repressed, and at even higher temperatures (like 42°C) it’s largely absent. Because of this, growing the organism at roughly 22°C enhances pigment formation, producing the characteristic red coloration. Media type matters less for pigment, so the key factor is keeping the culture at room temperature rather than at higher temperatures.

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