Plant Seeds Do Something Incredible When The Sound of Rain Strikes
ScienceAlert • • science
Key Points:
- New research by MIT engineers reveals that rice seeds can sense vibrations from falling raindrops, triggering them to germinate faster in anticipation of water.
- Seeds exposed to simulated raindrop impacts germinated up to 37% faster than those not exposed, suggesting sound-induced vibrations accelerate growth.
- The mechanism involves statoliths, gravity-sensing organelles in plant cells, which are jostled by raindrop vibrations, signaling seeds to break dormancy and grow.
- Acoustic vibrations are amplified underwater, making the sound pressure from raindrops on submerged seeds comparable to the noise near a jet engine, enhancing seed sensitivity.
- While the study focused on rice due to its aquatic growth and similarity to other plants in gravitropism, researchers believe many plant seeds may similarly respond to environmental sounds.
