Potassium concentration (IMAGE) University of Münster Caption Potassium concentration in root cells (cytosol) immediately after the onset of potassium deficiency (time series, from left). Representation in false colors; red (highest concentration) > yellow > green > blue (lowest concentration). Credit WWU - AG Kudla Usage Restrictions The use of the image is permitted exclusively in connection with the press release and with reference to the source. 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.