Venus Flytrap's Secret: Softening Cells Trigger Snap

The Venus flytrap's astonishing speed in capturing prey has long captivated scientists, including Charles Darwin. New research has uncovered the precise mechanism behind this rapid trap closure. Scientists discovered that a finely tuned detection system causes the outer cells of the leaf to soften almost instantaneously upon detecting prey.

This softening allows the Venus flytrap to flip into its closed position within a single second. Researchers utilized a nanoindenter to measure the leaf's surface pressure, revealing that increased cell flexibility, rather than water movement (a prior hypothesis), was responsible. This breakthrough resolves a puzzle that has intrigued botanists for over a century.