K. Al-Rasheid

Publications349
h-index50
Citations12,324
Highly Influential Citations591
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Activity of guard cell anion channel SLAC1 is controlled by drought-stress signaling kinase-phosphatase pair
TLDR
It is demonstrated that SLAC1 represents the slow, deactivating, weak voltage-dependent anion channel of guard cells controlled by phosphorylation/dephosphorylation.
Guard cell anion channel SLAC1 is regulated by CDPK protein kinases with distinct Ca2+ affinities
TLDR
The CPK and OST1 branch of ABA signal transduction in guard cells seem to converge on the level of SLAC1 under the control of the ABI1/ABA-receptor complex.
Arabidopsis V-ATPase activity at the tonoplast is required for efficient nutrient storage but not for sodium accumulation
TLDR
Results show that during gametophyte and embryo development V-PPase activity at the tonoplast is sufficient whereasTonoplast V-ATPase activity is limiting for nutrient storage but not for sodium tolerance during vegetative and reproductive growth, which indicates that vacuolar nitrate storage represents a major growth-limiting factor.
Stomatal Closure by Fast Abscisic Acid Signaling Is Mediated by the Guard Cell Anion Channel SLAH3 and the Receptor RCAR1
TLDR
The identification of SLAH3 as the nitrate-, calcium-, and ABA-sensitive guard cell anion channel provides insights into the relationship among stomatal response to drought, signaling by nitrate, and nitrate metabolism.
Perception of the Arabidopsis Danger Signal Peptide 1 Involves the Pattern Recognition Receptor AtPEPR1 and Its Close Homologue AtPEPR2*
TLDR
Electrophysiological evidence is provided that at the level of the plasma membrane, AtPep1 triggers a receptor-dependent transient depolarization through activation of plasma membrane anion channels, and that this effect is absent in the double mutant pepr1/pepr2.
AtALMT12 represents an R-type anion channel required for stomatal movement in Arabidopsis guard cells.
TLDR
It is shown that AtALMT12, a member of the aluminum activated malate transporter family in Arabidopsis, represents a guard cell R-type anion channel and its activity depends on extracellular malate, a key metabolite and osmolite of guard cells that shifts the threshold for voltage activation of Atalmt12 towards more hyperpolarized potentials.
Recalibrating Equus evolution using the genome sequence of an early Middle Pleistocene horse
TLDR
Thealyses suggest that the Equus lineage giving rise to all contemporary horses, zebras and donkeys originated 4.0–4.5 million years before present, twice the conventionally accepted time to the most recent common ancestor of the genus Equus, and supports the contention that Przewalski's horses represent the last surviving wild horse population.
The Stomatal Response to Reduced Relative Humidity Requires Guard Cell-Autonomous ABA Synthesis
Multiple calcium-dependent kinases modulate ABA-activated guard cell anion channels.
Open stomata 1 (OST1) kinase controls R-type anion channel QUAC1 in Arabidopsis guard cells.
TLDR
These studies indicate that OST1 is addressing both S-/SLAC- and R-/QUAC-type guard cell anion channels, and explain why the ost1-2 mutant is much more sensitive to drought than single slac1 or quac1 mutants.
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