Transgenic tobacco leaves (IMAGE) University of Würzburg Caption Transgenic tobacco leaves after 24 hours of green light exposure: a, plant with anion channel GtACR1; green light-induced membrane potential change (depolarization) is shown on the left. b, plant with calcium ion channel XXM 2.0; green light-induced depolarization is shown on the right. Horizontal bar indicates exposure time. Credit Meiqi Ding / JMU Usage Restrictions None License Original 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.