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We Finally Know What Worms Use to Digest Dead Leaves, and We’d Be in Deep Trouble Without It

Accepted submission by Phoenix666 at 2015-08-06 12:41:22
Science

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 [washingtonpost.com] 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 [wikipedia.org] in a matter of weeks.


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