Stomatal movement in Zea mays: Shuttle of potassium and chloride between guard cells and subsidiary cells.

摘要: When stomates of Zea mays open K and Cl migrate from the subsidiary cells into guard cells; when close both elements return to cells. Subsidiary function as reservoirs for Cl. Import loss become observable 1 or 2 min after light is turned on off, histochemical methods electron-probe microanalyzer are used detection. Each stomatal complex maize contains average 10±3×10-13 gram equivalents (eq) 4±1×10-13 eq Guard accumulate in CO2-free air at an rate 10×10-15 per minute, approximately half that rate.