Early Extracellular ATP Signaling in Arabidopsis Root Epidermis: A Multi-Conductance Process
| Autor: | Julia M. Davies, Valérie Legué, Gary Stacey, Limin Wang, Nathalie Leblanc-Fournier, Bruno Moulia |
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| Přispěvatelé: | Department of Plant Sciences, University of the Free State [South Africa], Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant - Clermont Auvergne (PIAF), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne (UCA), Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant (PIAF), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), University of the Free State [South Africa] (UFS), Legué, Valérie [0000-0003-2090-9580], Moulia, Bruno [0000-0002-3099-0207], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine P2K1 channel Plant Science permeable channels 01 natural sciences chemistry.chemical_compound navigable canals Arabidopsis root epidermis Membrane potential NADPH oxidase Vegetal Biology biology Chemistry ROS anion cation channels Cell biology Second messenger system Perspective plasma-membrane ca2+ h+-atpase medicine.drug nitric-oxide lcsh:Plant culture k+ channel 03 medical and health sciences Cyclic nucleotide medicine Extracellular [SDV.BV]Life Sciences [q-bio]/Vegetal Biology lcsh:SB1-1110 ATP DORN1 cyclic-nucleotide anion channels electrical-properties nadph oxidase Plant Sciences canal biology.organism_classification Adenosine 030104 developmental biology biology.protein anions Cation transport Biologie végétale 010606 plant biology & botany |
| Zdroj: | Frontiers in Plant Science (10), 8. (2019) Frontiers in Plant Science Frontiers in Plant Science, Frontiers, 2019, 10, pp.8. ⟨10.3389/fpls.2019.01064⟩ Frontiers in Plant Science, Vol 10 (2019) Frontiers in Plant Science, 2019, 10, pp.8. ⟨10.3389/fpls.2019.01064⟩ |
| ISSN: | 1664-462X |
| DOI: | 10.3389/fpls.2019.01064⟩ |
| Popis: | Adenosine 5'-triphosphate (ATP) is an important extracellular signaling agent, operating in growth regulation, stomatal conductance, and wound response. With the first receptor for extracellular ATP now identified in plants (P2K1/DORN1) and a plasma membrane NADPH oxidase revealed as its target, the search continues for the components of the signaling cascades they command. The Arabidopsis root elongation zone epidermal plasma membrane has recently been shown to contain cation transport pathways (channel conductances) that operate downstream of P2K1 and could contribute to extracellular ATP (eATP) signaling. Here, patch clamp electrophysiology has been used to delineate two further conductances from the root elongation zone epidermal plasma membrane that respond to eATP, including one that would permit chloride transport. This perspective addresses how these conductances compare to those previously characterized in roots and how they might operate together to enable early events in eATP signaling, including elevation of cytosolic-free calcium as a second messenger. The role of the reactive oxygen species (ROS) that could arise from eATP's activation of NADPH oxidases is considered in a qualitative model that also considers the regulation of plasma membrane potential by the concerted action of the various cation and anion conductances. The molecular identities of the channel conductances in eATP signaling remain enigmatic but may yet be found in the multigene families of glutamate receptor-like channels, cyclic nucleotide-gated channels, annexins, and aluminum-activated malate transporters. |
| Databáze: | OpenAIRE |
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