Abscissic acid specific expression of RAB18 involves activation of anion channels in Arabidopsis thaliana suspension cells

Authors
Ghelis, T Dellis, O Jeannette, E Bardat, F Cornel, D Miginiac, E Rona, JP Sotta, B
Citation
T. Ghelis et al., Abscissic acid specific expression of RAB18 involves activation of anion channels in Arabidopsis thaliana suspension cells, FEBS LETTER, 474(1), 2000, pp. 43-47
Citations number
40
Categorie Soggetti
Biochemistry & Biophysics
Journal title
FEBS LETTERS
ISSN journal
00145793 → ACNP
Volume
474
Issue
1
Year of publication
2000
Pages
43 - 47
Database
ISI
SICI code
0014-5793(20000526)474:1<43:AASEOR>2.0.ZU;2-S
Abstract
The abscissic acid (ABA) transduction cascade following the plasmalemma per ception was analyzed in intact Arabidopsis thaliana suspension cells. In re sponse to impermeant ABA, anion currents were activated and K+ inward recti fying currents were inhibited. Anion current activation was required for th e ABA specific expression of RAB18. By contrast, specific inhibition of Kchannels by tetraethylammonium or Ba2+ did not affect RAB18 expression. Thu s, outer plasmalemma ABA perception triggered two separated signaling pathw ays. (C) 2000 Federation of European Biochemical Societies.