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Apocalypse, stage 2: Leaping oral superorganisms

The terms of our secret agreement with the shadowy-but-powerful dental-industrial complex stipulate that LOTME can only cover tooth-related news once a year. This is that once a year.

Penn Dental Medicine

Since we’ve already dealt with a robot apocalypse, how about a sci-fi horror story? A story with a “cross-kingdom partnership” in which assemblages of bacteria and fungi perform feats greater than either could achieve on its own. A story in which new microscopy technologies allow “scientists to visualize the behavior of living microbes in real time,” according to a statement from the University of Pennsylvania, Philadelphia.

While looking at saliva samples from toddlers with severe tooth decay, lead author Zhi Ren and associates “noticed the bacteria and fungi forming these assemblages and developing motions we never thought they would possess: a ‘walking-like’ and ‘leaping-like’ mobility. … It’s almost like a new organism – a superorganism – with new functions,” said senior author Hyun Koo, DDS, PhD, of Penn Dental Medicine.

Did he say “mobility”? He did, didn’t he?

To study these alleged superorganisms, they set up a laboratory system “using the bacteria, fungi, and a tooth-like material, all incubated in human saliva,” the university explained.

“Incubated in human saliva.” There’s a phrase you don’t see every day.

It only took a few hours for the investigators to observe the bacterial/fungal assemblages making leaps of more than 100 microns across the tooth-like material. “That is more than 200 times their own body length,” Dr. Ren said, “making them even better than most vertebrates, relative to body size. For example, tree frogs and grasshoppers can leap forward about 50 times and 20 times their own body length, respectively.”

So, will it be the robots or the evil superorganisms? Let us give you a word of advice: Always bet on bacteria.

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