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Serratia marcescens (/ s ə ˈ r eɪ ʃ i ə m ɑːr ˈ s ɛ s ɪ n z /) [3] [failed verification] is a species of rod-shaped, Gram-negative bacteria in the family Yersiniaceae. It is a facultative anaerobe and an opportunistic pathogen in humans. It was discovered in 1819 by Bartolomeo Bizio in Padua, Italy. [4]
Serratia is a genus of Gram-negative, facultatively anaerobic, rod-shaped bacteria of the family Enterobacteriaceae. [5] They are typically 1–5 μm in length, do not produce spores, [6] and can be found in water, soil, plants, and animals. [7]
Prodigiosin is a red dye produced by many strains of the bacterium Serratia marcescens, [1] [2] as well as other Gram-negative, gamma proteobacteria such as Vibrio psychroerythrus and Hahella chejuensis. It is responsible for the pink tint occasionally found in grime that accumulates on porcelain surfaces such as bathtubs, sinks, and toilet bowls.
[1]: 473 [5]: 154 Some specimens of Serratia marcescens produce an orange-red pigment called prodigiosin. [5]: 26 [8]: 236 Organisms with swarming motility, like Proteus species, exhibit concentric waves of growth extending from the inoculation point. [1]: 423 [5]: 153
Bacterial lawns (often of Serratia marcescens) are also used extensively when as an assay method when using bacteriophage as tracers in studies of groundwater flow. Although occasionally used as a synonym for biofilm, the term primarily applies to the simple, clonal, unstructured mats of organisms that typically only form on laboratory growth ...
Prodigiosin is a secondary metabolite of Serratia marcescens and its production is regulated by changes in growth medium as well as by teperature shifts. — Preceding unsigned comment added by Micjohn ( talk • contribs ) 18:11, 11 October 2006 (UTC) [ reply ]
Bacteria characterized by a huge diversity of morphology, starting with color, texture ending with shape of colony and their odor. In this photo we can see a plate with bacterial smears. From the left: Serratia marcescens, at the top: Micrococcus luteus and on the right: Staphylococcus epidermidis.
Operation Sea-Spray was a 1950 U.S. Navy secret biological warfare experiment in which Serratia marcescens and Bacillus globigii bacteria were sprayed over the San Francisco Bay Area in California, in order to determine how vulnerable a city like San Francisco may be to a bioweapon attack, killing at least one American and sickening at least 10 more.