Since this had already been written from a different direction than Tom's post above, I will continue to post this.
Could it maybe be possible that bacteria play a dual role on Earth by first of all being a low-level critter with a group consciousness controlled by an IUOC, and then at the same time also be a critical aspect of the Earth's PMR rule set as well?
It isn't the rule set as such, it is the fact that this is an evolved reality. The bacteria evolved to hold these necessary places in the PMR reality. Yes, we need these gut bacteria and yes, there is a symbiosis. If we have the wrong colony of gut bacteria, we are in deep trouble. Furthermore, are you at all familiar with the mitochondria in our cells which produce energy for use in the cell. The theory seems to be that they were originally symbiotic bacteria which have lost much of their DNA over the history of evolution. They are still isolated and identifiable, but not viable other than as our symbiotes. But they say that so much information has been lost to this very long history that the theory can probably never be proven.
This is why it is said that all life connects to all life in PMR. If bacteria did not exist, we would lose soil fertility and thus lose our food crops. If we lose our bee pollinators because of the chemical companies mishandling of pesticides and GMO crops, we lose our feed crops or have to be out there hand pollinating. All life is interconnected and interdependent. That's the way that PMR is built.
As soon as the cow had eaten the hay, she gave the old woman the milk; and away she went with it in a saucer to the cat.
As soon as the cat had lapped up the milk, the cat began to kill the rat; the rat began to gnaw the rope; the rope began to hang the butcher; the butcher began to kill the ox; the ox began to drink the water; the water began to quench the fire; the fire began to burn the stick; the stick began to beat the dog; the dog began to bite the pig; the little pig in a fright jumped over the stile; and so the old woman got home that night.
It all connects together.