Phys.org

Plants Release Chemical Signals That Recruit Wasps to Kill Attacking Caterpillars

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.