title: Stomatal Opening Is Induced in Epidermal Peels of Commelina communis L. by GTP Analogs or Pertussis Toxin.
abstract: Pretreatment with pertussis toxin or microinjection of guanosine- 5[prime]-(3-thiotriphosphate) (GTP-[gamma]-S) into guard cells in peeled epidermis of Commelina communis L. promoted stomatal opening under subsaturating white light. Guanosine-5[prime]-(2-thiodiphosphate) (GDP-[beta]-S) and adenosine-5[prime]-(3-thiotriphosphate) (ATP-[gamma]-S) did not change stomatal aperture under identical conditions. These results indicate that G proteins may be involved in the regulation of stomatal opening.
authors.affiliation: Department of Life Science, Pohang Institute of Science and Technology, Pohang, Korea (H.J.L., Y.L.).
authors.forename: H. J.
authors.initials: HJ
authors.lastname: Lee
authors.forename: E. B.
authors.initials: EB
authors.lastname: Tucker
authors.forename: R. C.
authors.initials: RC
authors.lastname: Crain
authors.forename: Y.
authors.initials: Y
authors.lastname: Lee