Stomatal movement in Zea mays: Shuttle of potassium and chloride between guard cells and subsidiary cells |
| |
Authors: | Klaus Raschke Margaret Pierce Fellows |
| |
Affiliation: | (1) MSU/AEC Plant Research Laboratory, Michigan State University, East Lansing |
| |
Abstract: | Summary When stomates of Zea mays open K and Cl migrate from the subsidiary cells into the guard cells; when the stomates close both elements return to the subsidiary cells. Subsidiary cells function as reservoirs for K and Cl. Import of K and Cl into the guard cells and loss of both elements from the guard cells become observable 1 or 2 min after light is turned on or off, both when histochemical methods and the electron-probe microanalyzer are used for detection. Each stomatal complex of maize contains on the average 10±3×10-13 gram equivalents (eq) of K and 4±1×10-13 eq of Cl. Guard cells accumulate K in the light and CO2-free air at an average rate of 10×10-15 eq K per minute, and Cl at approximately half that rate. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |