Do Really Close Stomata by Soil Drying ABA Produced in the Roots and Transported in Transpiration Stream?

Joon Sang Lee

The Department of Biology Education, Chungbuk National University, Cheongju, Korea.

DOI: 10.4236/ajps.2013.41022                

Abstract

Stomatal aperture responses of Commelina communis L. between well watered plants and water stressed plants were investigated. To see the very rapid response to water stress, the plants were directly rooted out from the soil and exposed to the air immediately. Stomata, rooted out from the soil, were totally closed within 10 minutes without any detention time while the stomata of the plants in the soil had been kept opening. These results suggest that stomatal response to the abrupt water stress is very rapid indicating that guard cell itself or leaves could sense water status in the plants.

Keywords

Abscisic Acid; Commelina communis L.; Signal Transduction Pathway; Water Stress

Conflicts of Interest

The authors declare no conflicts of interest.

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