Trees Use Hidden 'Muscle' Wood to Straighten Trunks, New Study Finds

Researchers have identified a previously unknown mechanism that allows trees to sense their own shape and straighten their trunks. The study shows that specialized wood fibers act like opposing muscles, contracting and relaxing to correct bending. By actively adjusting their posture, trees can maintain a vertical stance even after wind damage or uneven growth. The discovery explains how forests remain structurally sound over centuries. It also suggests that breeding or engineering trees with enhanced muscle‑like wood could produce stronger timber and more resilient crops. Forest managers could use this knowledge to select species better suited to climate‑induced stresses. The finding opens new avenues for improving forest health and wood quality through targeted genetic or silvicultural interventions.