Stomatal Opening Is Induced in Epidermal Peels of Commelina communis L. by GTP Analogs or Pertussis Toxin | Zendy

H. J. Lee | Zendy; Edward B. Tucker | Zendy; R. C. Crain | Zendy; Youngsook Lee | Zendy

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Stomatal Opening Is Induced in Epidermal Peels of Commelina communis L. by GTP Analogs or Pertussis Toxin

Author(s) -

H. J. Lee,

Edward B. Tucker,

R. C. Crain,

Youngsook Lee

Publication year - 1993

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.102.1.95

Subject(s) - guanosine , guard cell , gtp' , epidermis (zoology) , chemistry , botany , biology , biochemistry , enzyme , anatomy

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.

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