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This is Scientific American 60-second science. I'm Cynthia Graber. Got a minute?

Plants just like animals get injured. For plants, it's often because some herbivore is snacking on them.

And also like animals, plants usually seal those wounds up quickly to avoid infection or the loss of important materials.

But scientists recently found a plant that does not seal up a wound.

Instead, a type of nightshade called Solanum Dulcumara does its version of bleeding,

releasing drops of an unusual liquid at the wound site. Well, what we found is that the plant

is actually damaged by herbivores, like most plants are in nature. And in response to that, it secretes

sugar secretions from the wound edges where the herbivores have damaged the plant.

Tobias Lorsing is a graduate student at Frey Universitat Berlin and one of the study authors. The researchers

at first thought the flow could just be a passive bleeding, where the plant lost some of the sugar

solution being transported

internally. But it might also be, and this is what we finally could show, that the plant is

excreting the stuff on purpose. So it's changing the chemical composition, and it also controls

the amount of the curation that it produces. The sugary liquid is a kind of nectar, but it's not

the nectar found in flowers that

attracts pollinators. It's actually the type of nectar that's sometimes produced to attract

insects that protect the plant from herbivores, but that nectar is secreted at a specific

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