WSU Study Reveals New Fact About Plants and Physical Touch

A Washington State University-led study has concluded that even without nerves, plants can sense when something touches them and when it lets go. During experiments, individual plant cells responded to the touch of a very fine glass rod by sending slow waves of calcium signals to other plant cells, and when that pressure was released, they sent much more rapid waves. Michael Knoblauch, WSU biological sciences professor, and his colleagues conducted 84 experiments on 12 plants using thale cress and tobacco plants.