A novel biosensor to monitor proline in pea root exudates and nodules under osmotic stress and recovery

Plant and bacteria are able to synthesise proline, which acts as a compound to counteract the negative effects of osmotic stresses. Most methodologies rely on the extraction of compounds using destructive methods. This work describes a new proline biosensor that allows the monitoring of proline levels in a non-invasive manner in root exudates and nodules of legume plants.The proline biosensor was constructed by cloning the promoter region of...