scholarly journals Silencing MPK4 in Nicotiana attenuata Enhances Photosynthesis and Seed Production But Compromises Abscisic Acid-Induced Stomatal Closure and Guard Cell-Mediated Resistance to Pseudomonas syringae pv tomato DC3000

2011 ◽  
Vol 158 (2) ◽  
pp. 759-776 ◽  
Author(s):  
Christian Hettenhausen ◽  
Ian T. Baldwin ◽  
Jianqiang Wu
Keyword(s):  
Abscisic Acid ◽  
Seed Production ◽  
Pseudomonas Syringae ◽  
Guard Cell ◽  
Stomatal Closure ◽  
Nicotiana Attenuata ◽  
Tomato Dc3000

Stomatal Closure by Fast Abscisic Acid Signaling Is Mediated by the Guard Cell Anion Channel SLAH3 and the Receptor RCAR1

2011 ◽  
Vol 4 (173) ◽  
pp. ra32-ra32 ◽  
Author(s):  
D. Geiger ◽  
T. Maierhofer ◽  
K. A. S. AL-Rasheid ◽  
S. Scherzer ◽  
P. Mumm ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Guard Cell ◽  
Stomatal Closure ◽  
Anion Channel ◽  
Abscisic Acid Signaling

Abscisic acid-induced elevation of guard cell cytosolic Ca2+ precedes stomatal closure

Nature ◽  
1990 ◽  
Vol 343 (6254) ◽  
pp. 186-188 ◽  
Author(s):  
M. R. McAinsh ◽  
C. Brownlee ◽  
A. M. Hetherington
Keyword(s):  
Abscisic Acid ◽  
Guard Cell ◽  
Stomatal Closure

scholarly journals Stomatal morphology and physiology explain varied sensitivity to abscisic acid across vascular plant lineages

2021 ◽  
Author(s):  
Lei Gong ◽  
Xu-Dong Liu ◽  
Yuan-Yuan Zeng ◽  
Xue-Qian Tian ◽  
Yan-Lu Li ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Guard Cell ◽  
Vascular Plant ◽  
Stomatal Closure ◽  
Seed Plants ◽  
Osmotic Solution ◽  
Guard Cell Protoplasts ◽  
Selaginella Moellendorffii ◽  
Cytoskeleton Dynamics ◽  
Signaling Components

Abstract Abscisic acid (ABA) can induce rapid stomatal closure in seed plants, but the action of this hormone on the stomata of fern and lycophyte species remains equivocal. Here, ABA-induced stomatal closure, signaling components, guard cell K+ and Ca2+ fluxes, vacuolar and actin cytoskeleton dynamics, and the permeability coefficient of guard cell protoplasts (Pf) were analyzed in species spanning the diversity of vascular land plants including 11 seed plants, 6 ferns, and 1 lycophyte. We found that all 11 seed plants exhibited ABA-induced stomatal closure, but the fern and lycophyte species did not. ABA-induced hydrogen peroxide elevation was observed in all species, but the signaling pathway downstream of nitric oxide production, including ion channel activation, was only observed in seed plants. In the angiosperm faba bean (Vicia faba), ABA application caused large vacuolar compartments to disaggregate, actin filaments to disintegrate into short fragments and Pf to increase. None of these changes was observed in the guard cells of the fern Matteuccia struthiopteris and lycophyte Selaginella moellendorffii treated with ABA, but a hypertonic osmotic solution did induce stomatal closure in fern and the lycophyte. Our results suggest that there is a major difference in the regulation of stomata between the fern and lycophyte plants and the seed plants. Importantly, these findings have uncovered the physiological and biophysical mechanisms that may have been responsible for the evolution of a stomatal response to ABA in the earliest seed plants.

Sign in / Sign up

Export Citation Format

Share Document