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Updated by claudellejpillay on May 26, 2020
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Pigment producing Bacteria- Serratia marcescens.

Class: Gammaproteobacteria
Family: Yersiniaceae
Scientific name: Serratia marcescens
Higher classification: Serratia
Rank: Species
Order: Enterobacterales

Serratia marcescens is a species of bacteria that produces a red pigment that contains antibacterial activity. Prodigiosin which is the pigment produced, is found to possess antibacterial, antifungal, immunosuppressive and antiproliferative activity and is widely used to treat diseases.


Microscopic Appearance of Serratia marcescens

Microscopic Appearance of Serratia marcescens

Gram Stain: Gram-negative.
Morphology: Straight rods with rounded ends.
Size: 0.5-0.8 micrometers by 0.9-2.0 micrometers.
Colour: Red/Orange


Agar plate indicating Serratia marcescens antibiotic resistance

Agar plate indicating Serratia marcescens antibiotic resistance

Serratia marcescens grown on agar

Serratia marcescens grown on agar
Molecules | Free Full-Text | Prodigiosin Production by Serratia marcescens UCP 1549 Using Renewable-Resources as a Lo...

A new strain of Serratia marcescens UCP1459 isolated from a semi-arid soil produced the natural red pigment prodigiosin, characterized by an uncommon pyrrolylpyrromethane skeleton. Prodigiosin is a promising drug due to its reported antifungal, immunosuppressive and anti-proliferative activities. The objective of this work was to indentify a suitable medium to simultaneously enhance S. marcescens growth and pigment production using renewable resources obtained from industrial wastes. S. marcescens produced the highest level of prodigiosin (49.5 g/L) at 48 h of cultivation using 6% “manipueira” (cassava wastewater) supplemented with mannitol (2%) at pH 7 and 28 °C. Carbohydrates in “manipueira” and mannitol play a role in the enhanced cell growth and prodigiosin production. The purified pigment extracted from the biomass was analyzed by mass spectrophotometry and showed the expected molecular weight of 324 Da corresponding to prodigiosin. In conclusion, we have successfully designed a new, economically feasible medium supporting enhanced S. marcescens growth and a high yield production of prodigiosin.

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Please open the link above to discover more information about the pigment Prodigiosin produced by the bacteria species Serratia marcescens.

Prodigiosin pigment formation in Sarratia| Serratia marcescens| Prodigiosin

Prodigiosin formation in Serratia: It is formed optimally at room temperature but not at 37OC incubation over night. Magenta in color but might be red or pin...

Serratia marcescens

Watch the video above and observe the formation of the stunning species Serratia marcescens rich red in colour. #Love is red #Red is love

Medical vocabulary: What does Prodigiosin mean

What does Prodigiosin mean in English?... Watch the above video to make your perception satisfactorily.


#More fascinating facts about the incredible pigment producing bacteria.
Serratia is a genus of Gram-negative, facultatively anaerobic, rod-shaped bacteria of the Enterobacteriaceae family. The most common species in the genus, S....