Plant Type 2B Ca2+-ATPases: The Diversity of Isoforms of the Model Plant Arabidopsis thaliana

Bonza, Maria Cristina; Luoni, Laura; Olivari, C.; Michelis, Maria Ida De

doi:10.1007/978-3-319-24780-9_13

Cited by 5 publications

(3 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two scenarios, alone or in combination, could contribute to the lethality. One is that ACAs have essential functions in cell physiology such as calcium homeostasis, and shoot apical meristem cells cannot transit from vegetative growth to reproductive growth ( Bonza et al , 2016 ; Zhu, 2016 ). The other scenario is that the shoot apical meristem cells have heightened defense responses leading to cell death.…”

Section: Discussionmentioning

confidence: 99%

Overlapping and differential roles of plasma membrane calcium ATPases in Arabidopsis growth and environmental responses

Yan

et al. 2018

Journal of Experimental Botany

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Overlapping and differential roles of plasma membrane calcium ATPases in Arabidopsis growth and environmental responses

Yan

et al. 2018

Journal of Experimental Botany

View full text Add to dashboard Cite

show abstract

“…Transport of Ca 2+ into organelles is catalyzed by Ca 2+ -ATPases. There are two distinct families: The A uto-inhibited C a 2+ - A TPases, ACA (that also operate at the PM) and the E R Ca 2+ -ATPases, ECA; reviewed by Bonza et al, 2016 ). The lower affinity CAX ( Ca tion/H + E x changers) appear to be restricted to endomembranes but also facilitate Ca 2+ sequestration ( Connorton et al, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Calcium-Mediated Abiotic Stress Signaling in Roots

et al. 2016

View full text Add to dashboard Cite

Roots are subjected to a range of abiotic stresses as they forage for water and nutrients. Cytosolic free calcium is a common second messenger in the signaling of abiotic stress. In addition, roots take up calcium both as a nutrient and to stimulate exocytosis in growth. For calcium to fulfill its multiple roles must require strict spatio-temporal regulation of its uptake and efflux across the plasma membrane, its buffering in the cytosol and its sequestration or release from internal stores. This prompts the question of how specificity of signaling output can be achieved against the background of calcium’s other uses. Threats to agriculture such as salinity, water availability and hypoxia are signaled through calcium. Nutrient deficiency is also emerging as a stress that is signaled through cytosolic free calcium, with progress in potassium, nitrate and boron deficiency signaling now being made. Heavy metals have the capacity to trigger or modulate root calcium signaling depending on their dose and their capacity to catalyze production of hydroxyl radicals. Mechanical stress and cold stress can both trigger an increase in root cytosolic free calcium, with the possibility of membrane deformation playing a part in initiating the calcium signal. This review addresses progress in identifying the calcium transporting proteins (particularly channels such as annexins and cyclic nucleotide-gated channels) that effect stress-induced calcium increases in roots and explores links to reactive oxygen species, lipid signaling, and the unfolded protein response.

show abstract

“…The coding function relies on maintaining constantly low levels of [Ca 2+ ]cyt around 0.1 mM. Buffers, H + / Ca 2+ antiporters and Ca 2+ -ATPases, actively remove Ca 2+ from the cytosol into the apoplast or intracellular stores (Connorton et al, 2012;Bonza et al, 2016). In tandem, Ca 2+ can move down the concentration gradient into the cytosol through channel proteins, subsequently generating a signal.…”

Section: Introductionmentioning

confidence: 99%

A dual-flow RootChip enables quantification of bi-directional calcium signaling in primary roots

et al. 2023

View full text Add to dashboard Cite

One sentence summary: Bi-directional-dual-flow-RootChip to track calcium signatures in Arabidopsis primary roots responding to osmotic stress.Plant growth and survival is fundamentally linked with the ability to detect and respond to abiotic and biotic factors. Cytosolic free calcium (Ca2+) is a key messenger in signal transduction pathways associated with a variety of stresses, including mechanical, osmotic stress and the plants’ innate immune system. These stresses trigger an increase in cytosolic Ca2+ and thus initiate a signal transduction cascade, contributing to plant stress adaptation. Here we combine fluorescent G-CaMP3 Arabidopsis thaliana sensor lines to visualise Ca2+ signals in the primary root of 9-day old plants with an optimised dual-flow RootChip (dfRC). The enhanced polydimethylsiloxane (PDMS) bi-directional-dual-flow-RootChip (bi-dfRC) reported here adds two adjacent inlet channels at the base of the observation chamber, allowing independent or asymmetric chemical stimulation at either the root differentiation zone or tip. Observations confirm distinct early spatio-temporal patterns of salinity (sodium chloride, NaCl) and drought (polyethylene glycol, PEG)-induced Ca2+ signals throughout different cell types dependent on the first contact site. Furthermore, we show that the primary signal always dissociates away from initially stimulated cells. The observed early signaling events induced by NaCl and PEG are surprisingly complex and differ from long-term changes in cytosolic Ca2+ reported in roots. Bi-dfRC microfluidic devices will provide a novel approach to challenge plant roots with different conditions simultaneously, while observing bi-directionality of signals. Future applications include combining the bi-dfRC with H2O2 and redox sensor lines to test root systemic signaling responses to biotic and abiotic factors.

show abstract

Plant Type 2B Ca2+-ATPases: The Diversity of Isoforms of the Model Plant Arabidopsis thaliana

Cited by 5 publications

References 78 publications

Overlapping and differential roles of plasma membrane calcium ATPases in Arabidopsis growth and environmental responses

Overlapping and differential roles of plasma membrane calcium ATPases in Arabidopsis growth and environmental responses

Calcium-Mediated Abiotic Stress Signaling in Roots

A dual-flow RootChip enables quantification of bi-directional calcium signaling in primary roots

Contact Info

Product

Resources

About