Proposed Signaling Pathway of Stomata Opening in Response to Blue Light (image) Institute of Transformative Bio-Molecules (ITbM), Nagoya University Share Print E-Mail Caption 1) Phototropin receptors in the guard cells of stomata receives blue light; 2) Signal transmission by BLUS1, BHP and PP1 (proposed signaling components); 3) Activation of the plasma membrane proton pump (PM H+-ATPase); 4) Potassium (K+) ion uptake; 5) Accumulation of K+ ions increases the osmotic pressure in the guard cells; 6) Water uptake and swelling of cells; 7) Stomatal opening. This study has shown that compounds SCL1 and SCL2 act upon the signaling factors between phototropin and PM H+-ATPase. Credit ITbM, Nagoya University Usage Restrictions None Share Print E-Mail 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.