Researchers Reveal How Plants Hit the Reset Button After Stress

When plants face harsh conditions, such as extreme cold or high salt levels, they do not just stop growing by accident; their bodies actively manage the crisis at the microscopic level. Once the "stress" ends, plants try to bounce back and return to normal growth, but the specific biological switches that manage this recovery process have long been a mystery to scientists.

To solve this, University of British Columbia researchers studied how different plants, such as grasses and clover-like weeds,  tolerate salt, cold, and heat. They discovered that during cold or salty conditions, the plants use a "pause and play" strategy. They park their cell-building process in a specific waiting phase, held in place by two key proteins that act as biological brakes. Once the environment improves, the plants release these brakes, allowing growth to resume right where it left off. This suggests that plants have a built-in, universal system for hitting the pause button to survive tough times without permanently breaking their growth cycle.

Read more from the research article published in New Phytologist.