The Micrococcus luteus is known as an actinobacterium that has one of the smallest genomes in bacteria. The bacterium is between 0.5 and 3.5 micrometers in diameter. Its genome size has been identified to be around 2,501,097 bp in a single circular chromosome. It can be found in various environments such as water, soil, dust and even human skin.
This bacterium is also used in quality control for sterility testing and asseying antibiotics and fungicides.
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| Figure 1: M.luteus in nutrient agar medium as received from the supplier and conserved in the fridge |
However we wanted to know, if this microbe could grow on a medium that is very close to the nutirient medium in composition, the LBA medium. In order to test the growth of the M.luteus in LBA medium, we did a overnight culture of the latter. As expected it did grow in the LBA medium.
The optimal growth temperature for this bacterium is between 25°C and 30°C.
This cocci is also known as nonmotile and clustered. Furthermore these bacteria produce a yellowish water insoluble pigment which has been identified as a carotenoid. This pigment is said to absorb wave-lenghts from 350 to 475 nanometers.
For more information check-out:
https://microbewiki.kenyon.edu/index.php/Micrococcus
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