Proposed signaling pathway of stomata opening in response to blue light. (IMAGE)

Institute of Transformative Bio-Molecules (ITbM), Nagoya University

Proposed signaling pathway of stomata opening in response to blue light.

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.

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ITbM, Nagoya University

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