Master stomatal regulator SPEECHLESS (SPCH) (IMAGE) National University of Singapore Caption Figure: (A) Plants expressing different versions of SPEECHLESS (SPCH) with standard and altered “phosphocodes”, leading to varying SPCH levels and stomatal number. (B) Altering the SPCH phosphocode resulted in plants with improved or reduced tolerance to drought stress. Credit Modified from figures in Yang et al., Science Advances 2022 Usage Restrictions No restriction License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.