Tension wood: A 'muscle' that can both bend and straighten plants

A research team from INRAE and the University Clermont Auvergne has shown that trees are capable of correcting a curvature they detect in their stems through a specific biological process. In the study, young trees with bent stems were placed in an experimental set-up that prevented them from sensing their orientation relative to light and gravity. The only sense remaining to the trees was the perception of their own curvature. Under these conditions, the scientists observed the formation of a p