Sunday, August 2, 2026
Science

How bean plants call on wasps for help when hungry caterpillars attack

Some plants are not the sitting ducks they appear to be when they come under attack. If a hungry caterpillar starts to chomp on the succulent leaves of a common bean plant, a highly sophisticated defense system kicks into action. The plant sends out a chemical distress signal that summons predatory...

How bean plants call on wasps for help when hungry caterpillars attack
Image: Phys.org
Some plants are not the sitting ducks they appear to be when they come under attack. If a hungry caterpillar starts to chomp on the succulent leaves of a common bean plant, a highly sophisticated defense system kicks into action. The plant sends out a chemical distress signal that summons predatory wasps to its aid. Now, a study published in the journal Science Advances reveals how the plant pulls off this trick.

Originally published at Phys.org

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