Journal ArticleDOI
The plant Ca2+‐ATPase repertoire: biochemical features and physiological functions
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TLDR
In this article, the authors summarise available knowledge of the biochemical characteristics and the physiological role of plant Ca(2+)-ATPases, greatly improved after gene identification, which allows both biochemical analysis of single isoforms through heterologous expression in yeast and expression profiling and phenotypic analysis for single isoform knock-out mutants.Abstract:
Ca(2+)-ATPases are P-type ATPases that use the energy of ATP hydrolysis to pump Ca(2+) from the cytoplasm into intracellular compartments or into the apoplast. Plant cells possess two types of Ca(2+) -pumping ATPase, named ECAs (for ER-type Ca(2+)-ATPase) and ACAs (for auto-inhibited Ca(2+)-ATPase). Each type comprises different isoforms, localised on different membranes. Here, we summarise available knowledge of the biochemical characteristics and the physiological role of plant Ca(2+)-ATPases, greatly improved after gene identification, which allows both biochemical analysis of single isoforms through heterologous expression in yeast and expression profiling and phenotypic analysis of single isoform knock-out mutants.read more
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Journal ArticleDOI
Calcium transport across plant membranes: mechanisms and functions
Vadim Demidchik,Vadim Demidchik,Vadim Demidchik,Sergey Shabala,Sergey Shabala,Stanislav Isayenkov,Tracey Ann Cuin,Igor Pottosin +7 more
TL;DR: Key Ca2+ -mediated reactions have now been associated with the activities of specific subunits from these families, including cyclic nucleotide-gated channels, ionotropic glutamate receptors, two-pore channel 1 (TPC1), annexins and several types of mechanosensitive channels.
Journal ArticleDOI
Calcium efflux systems in stress signaling and adaptation in plants.
TL;DR: It is concluded that physiologically relevant variations in the activity of Ca2-ATPase pumps and Ca2+/H+ exchangers are sufficient to fully describe all the reported experimental evidence and determine the shape of [Ca2+]cyt signatures in response to environmental stimuli, emphasizing the crucial role these active efflux systems play in plant adaptive responses to environment.
Journal ArticleDOI
The membrane transport system of the guard cell and its integration for stomatal dynamics
Mareike Jezek,Michael R. Blatt +1 more
TL;DR: A quantitative understanding of how ion transport is integrated and controlled is key to meeting the challenges of water availability and crop production and to engineering guard cells for improved water use efficiency and agricultural yields.
Journal ArticleDOI
Periplasmic arabinogalactan glycoproteins act as a calcium capacitor that regulates plant growth and development.
Derek T. A. Lamport,Péter Várnai +1 more
TL;DR: It is proposed that these Ca(2+) waves prime the 'calcium oscillator', a signal generator essential to the global Ca( 2+) signalling pathway of green plants.
Journal ArticleDOI
Calcium/calmodulin-mediated regulation of plant immunity.
Cécilia Cheval,Didier Aldon,Didier Aldon,Jean-Philippe Galaud,Jean-Philippe Galaud,Benoit Ranty,Benoit Ranty +6 more
TL;DR: Significant progress made in the identification of CaM/CML-regulated components involved in the generation of Ca(2+) signals and Ca( 2+)-dependent regulation of gene expression during plant immune responses are focused on.
References
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Journal ArticleDOI
The oxidative burst in plant disease resistance
TL;DR: Emerging data indicate that the oxidative burst reflects activation of a membrane-bound NADPH oxidase closely resembling that operating in activated neutrophils, which underlies the expression of disease-resistance mechanisms.
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Calcium at the Crossroads of Signaling
TL;DR: Calcium Signals are identified as a central Paradigm in Stimulus–Response Coupling and are normally composed of elements that include calcium and Na6(SO4)2, Na2SO4, and Na2CO3.
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The Language of Calcium Signaling
TL;DR: In this paper, a toolkit of Ca2+-binding proteins that regulate transcription via Ca2-responsive promoter elements and that regulate protein phosphorylation is presented, which can be used to decode and decode the information encoded within the Ca2−transients.
Journal ArticleDOI
Cold calcium signaling in Arabidopsis involves two cellular pools and a change in calcium signature after acclimation.
TL;DR: Cold shock elicits an immediate rise in cytosolic free calcium concentration ([Ca2+]cyt) in both chilling-resistant Arabidopsis and chilling-sensitive tobacco and this suggests that acclimation involves modification of plant calcium signaling to provide a "cold memory."