Characterization of the plasma-membrane H+-ATPase from Vicia faba guard cells

Planta ◽  
1992 ◽  
Vol 188 (2) ◽  
pp. 206-214 ◽  
Author(s):  
Gabi Lohse ◽  
Rainer Hedrich
Keyword(s):  
Plasma Membrane ◽  
Vicia Faba ◽  
Guard Cells

Identification and biochemical characterization of the plasma-membrane H+-ATPase in guard cells of Vicia faba L.

Planta ◽  
1993 ◽  
Vol 190 (1) ◽  
Author(s):  
Dirk Becker ◽  
Carsten Zeilinger ◽  
Gabi Lohse ◽  
Hans Depta ◽  
Rainer Hedrich
Keyword(s):  
Plasma Membrane ◽  
Vicia Faba ◽  
Biochemical Characterization ◽  
Guard Cells ◽  
Vicia Faba L

scholarly journals Two Plasma Membrane H+-ATPase Genes Expressed in Guard Cells of Vicia faba Are Also Expressed Throughout the Plant

1996 ◽  
Vol 37 (5) ◽  
pp. 650-659 ◽  
Author(s):  
A. E. Hentzen ◽  
L. B. Smart ◽  
L. E. Whimmers ◽  
H. H. Fang ◽  
J. I. Schroeder ◽  
...  
Keyword(s):  
Plasma Membrane ◽  
Vicia Faba ◽  
Guard Cells

scholarly journals K+ transport properties of K+ channels in the plasma membrane of Vicia faba guard cells.

1988 ◽  
Vol 92 (5) ◽  
pp. 667-683 ◽  
Author(s):  
J I Schroeder
Keyword(s):  
Plasma Membrane ◽  
Transport Properties ◽  
Vicia Faba ◽  
Guard Cell ◽  
Guard Cells ◽  
Stomatal Opening ◽  
Whole Cell ◽  
K Channels ◽  
K Transport ◽  
K Currents

Electrical properties of the plasma membrane of guard cell protoplasts isolated from stomates of Vicia faba leaves were studied by application of the whole-cell configuration of the patch-clamp technique. The two types of K+ currents that have recently been identified in guard cells may allow efflux of K+ during stomatal closing, and uptake of K+ during stomatal opening (Schroeder et al., 1987). A detailed characterization of ion transport properties of the inward-rectifying (IK+,in) and the outward-rectifying (IK+,out) K+ conductance is presented here. The permeability ratios of IK+,in and IK+,out currents for K+ over monovalent alkali metal ions were determined. The resulting permeability sequences (PK+ greater than PRb+ greater than PNa+ greater than PLi+ much greater than PCs+) corresponded closely to the ion specificity of guard cell movements in V. faba. Neither K+ currents exhibited significant inactivation when K+ channels were activated for prolonged periods (greater than 10 min). The absence of inactivation may permit long durations of K+ fluxes, which occur during guard cell movements. Activation potentials of inward K+ currents were not shifted when external K+ concentrations were changed. This differs strongly from the behavior of inward-rectifying K+ channels in animal tissue. Blue light and fusicoccin induce hyperpolarization by stimulation of an electrogenic pump. From slow-whole-cell recordings it was concluded that electrogenic pumps require cytoplasmic substrates for full activation and that the magnitude of the pump current is sufficient to drive K+ uptake through IK+,in channels. First, direct evidence was gained for the hypothesis that IK+,in channels are a molecular pathway for K+ accumulation by the finding that IK+,in was blocked by Al3+ ions, which are known to inhibit stomatal opening but not closing. The results presented in this study strongly support a prominent role for IK+,in and IK+,out channels in K+ transport across the plasma membrane of guard cells.

Isolation of cDNA for a Plasma Membrane H+-ATPase from Guard Cells of Vicia faba L.

1995 ◽  
Vol 36 (5) ◽  
pp. 919-924 ◽  
Author(s):  
Nobuyoshi Nakajima ◽  
Hikaru Saji ◽  
Mitsuko Aono ◽  
Noriaki Kondo
Keyword(s):  
Plasma Membrane ◽  
Vicia Faba ◽  
Guard Cells ◽  
Vicia Faba L

Distinct fluorescent pattern of KAT1::GFP in the plasma membrane of Vicia faba guard cells

2007 ◽  
Vol 86 (8) ◽  
pp. 489-500 ◽  
Author(s):  
Ulrike Homann ◽  
Tobias Meckel ◽  
Jennifer Hewing ◽  
Marc-Thorsten Hütt ◽  
Annette C. Hurst
Keyword(s):  
Plasma Membrane ◽  
Vicia Faba ◽  
Guard Cells ◽  
Fluorescent Pattern

Cytosolic calcium regulates ion channels in the plasma membrane of Vicia faba guard cells

Nature ◽  
1989 ◽  
Vol 338 (6214) ◽  
pp. 427-430 ◽  
Author(s):  
Julian I. Schroeder ◽  
Susumu Hagiwara
Keyword(s):  
Plasma Membrane ◽  
Ion Channels ◽  
Vicia Faba ◽  
Guard Cells ◽  
Cytosolic Calcium

Extracellular Ca2+ Regulating Stomatal Movement and Plasma Membrane K+ Channels in Guard Cells of Vicia faba Under Salt Stress

2008 ◽  
Vol 34 (11) ◽  
pp. 1970-1976 ◽  
Author(s):  
Xiang ZHAO ◽  
Yan-Liang WANG ◽  
Ya-Jing WANG ◽  
Xi-Li WANG ◽  
Xiao ZHANG
Keyword(s):  
Plasma Membrane ◽  
Salt Stress ◽  
Vicia Faba ◽  
Guard Cells ◽  
Stomatal Movement ◽  
K Channels
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