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Involvement of extracellular Ca2+ in stomatal movement through the regulation of water channels was investigated in broad bean (Vicia faba L.). Leaf peels were first incubated to open stomata, and then transferred to buffers in the presence of different CaCl2 concentrations. Stomatal status was observed under magnification and stomatal aperture (pore width/length) was measured. Stomatal closure was...
Calcium signaling has been established to play a very important role in stomatal movements. More and more attentions have now been focused on cytosolic calcium ([Ca 2+ ] cyt ) oscillation in guard cell. It is still not clear how [Ca 2+ ] cyt oscillation occurs and how it is decoded. Another point which attracted a lot of attentions is the...
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