A new study finds that plants respond to injury by actively redirecting sugars to damaged tissues, helping fuel the regeneration process. Using a fluorescent sensor to track sugar movement in living plants, researchers have discovered that wounds trigger a localized shift in energy transport, concentrating glucose around the injury site. The findings published in PNAS offer new insight into how plants coordinate repair and recovery and could help scientists better understand the mechanisms that support resilience in crops facing physical damage or environmental stress.

When a plant is damaged, whether by a storm, an animal, or a gardener's pruning shears, it faces an immediate challenge: how to deliver enough energy to the wounded area to rebuild lost tissue. The study reveals how plants solve that problem. The team discovered that injuries trigger a rapid rerouting of sugars, directing energy toward damaged tissues where repair and regeneration are underway.

Using a fluorescent sensor that allowed them to watch sugar movement inside living plants, the researchers found that glucose accumulates around wounds as regeneration progresses. They also identified several genes that help drive this process, providing new insight into how plants recover from injury.