…And It Is Changing How We Think About Soil Health!
Scientists have found that plants can transmit light internally from their leaves to their roots using vascular tissues—essentially acting like natural fiber optics.
Plant stems are directly piping sunlight down the stem and reaching receptors known as phytochromes, which play an important role in root growth. As most plants have these phytochromes, it is thought that light channeling is a common phenomenon.
This means that even roots buried in darkness are receiving light signals that guide their growth and behavior.
Why does this matter for soil health? Because roots don’t just respond to moisture and nutrients—they now appear to be influenced by above-ground light conditions too.
We are finding this internal light transmission can affect root architecture, microbial interactions, soil structure and nutrient uptake, all of which play vital roles in the biological and structural integrity of soil.
It’s a fascinating glimpse into how deeply interconnected the plant-soil system really is—and how light, even underground, is part of the story. 🌱💡
Plants Channel Light Underground!
