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The natural defenses of dead plants -- which are designed to inhibit enzymes in the gut to prevent digestion -- would be toxic for any other animal. But a group of researchers from Imperial College London have discovered new molecules in the worm gut, named drilodefensins, that can counteract the toxins, breaking them down the way that dish liquid breaks apart grease.
"Without drilodefensins, fallen leaves would remain on the surface of the ground for a very long time, building up to a thick layer," said Jake Bundy, an author of the study and a professor at Imperial College, in a statement. "Our countryside would be unrecognizable, and the whole system of carbon cycling would be disrupted."
The humble worm is amazing. It can turn lawn waste and food scraps into rich black soil in a matter of weeks.
(Score: 3, Insightful) by wonkey_monkey on Friday August 07 2015, @09:26AM
Have you ever heard of this new idea called "evolution"?
Trees don't know anything. They can't plan at all, regardless of whether they or their constituent parts are alive or dead (which, incidentally, is not always a simple binary distinction). They don't need to. Random mutations - such as leaves which don't decompose quickly - occur and confer advantages or disadvantages which end up being propogated (or not) through the generations.
But one explanation is that the tree noticed
That's a pretty terrible explanation.
systemd is Roko's Basilisk