The bacterium Proteus terrae is a non-pathogenic and natural microflora of humans, but Morganella morganii is an opportunistic pathogen. These organisms belong to risk group II. Screening the sensitivity of these isolates to antibiotics revealed a sufficient number of antibiotics, which can be used to control them, if required. BR3 and BR4 exhibited resistance to individual antibiotics, ampicillin and vancomycin, whereas only BR3 was resistant to tetracycline. The current investigation, along with earlier reported work on these isolates, identifies BR3 as a useful isolate in the industrial application for the degradation of EtBr. Identical and related microorganisms, which are available in the culture collection repositories, can also be explored for such potential to formulate a microbial consortium for the bioremediation of ethidium bromide prior to its disposal.
Diameter (mm) of the Zone of Inhibition Following 24 h of Incubation | |||||
---|---|---|---|---|---|
Bacterial Isolates | Antibiotics | ||||
C | V | T | K | G | |
BR3 | 32 (S) | 11 (R) | 11 (R) | 23 (S) | 22 (S) |
BR4 | 16 (I) | <1 (R) | 20 (S) | 22 (S) | 20 (S) |
This entry is adapted from the peer-reviewed paper 10.3390/biotech11010004