Article
G protein regulation of ion channels and abscisic acid signaling in Arabidopsis guard cells.
Science (New York, N.Y.) - 15 Jun 2001
Wang X Q, Ullah H, Jones A M, Assmann S M
Abstract excerpt
The phytohormone abscisic acid (ABA) promotes plant water conservation by decreasing the apertures of stomatal pores in the epidermis through which water loss occurs. We found that Arabidopsis thaliana plants harboring transferred DNA insertional mutations in the sole prototypical heterotrimeric GTP-binding (G) protein alpha subunit gene, GPA1, lack both ABA inhibition of guard cell inward K(+) channels and...
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