|Mattes of cyanobacteria. Looking like an image from space,|
mattes of cyanobacteria thrive in the scalding waters of Biscuit Basin,
Yellowstone National Park, Wyoming. USA, Yellowstone National
The basis behind a toxin-antitoxin system is that as long as the plasmid is present both toxin and anti-toxin are continually produced and the bacteria survives. However, the toxin that is produced is much more stable than the anti-toxin. So, if a bacteria loses the plasmid during cell division they lose the ability to produce anti-toxin but they are still in an environment that contains the stable toxin and therefore they perish.
There are a number of ways to monitor bacterial growth. But if you want to employ nepholometry in a microplate format only the NEPHELOstar Plus from BMG LABTECH allows you to do so.