ArticlePlant physiology1998
Control of Cl- efflux in chara corallina by cytosolic pH, free ca2+, and phosphorylation indicates a role of plasma membrane anion channels in cytosolic pH regulation
Article in Plant physiology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
7 citing papers in PubMed, 26 citations in OpenAlex.
- Evolution of long-distance signalling upon plant terrestrialization: comparison of action potentials in Characean algae and liverworts.Annals of botany · 2022Review
- Chloride as a Beneficial Macronutrient in Higher Plants: New Roles and Regulation.International journal of molecular sciences · 2019Review
- Anion Channel Inhibitor NPPB-Inhibited Fluoride Accumulation in Tea Plant (Camellia sinensis) Is Related to the Regulation of Ca²⁺, CaM and Depolarization of Plasma Membrane Potential.International journal of molecular sciences · 2016Article
- Mitochondrial sequestration of BCECF after ester loading in the giant alga Chara australis.Protoplasma · 2007Article
- Characterization of anion channels in the plasma membrane of Arabidopsis epidermal root cells and the identification of a citrate-permeable channel induced by phosphate starvation.Plant physiology · 2004Article
- A novel Cl- inward-rectifying current in the plasma membrane of the calcifying marine phytoplankton Coccolithus pelagicus.Plant physiology · 2003Article
- Cytoplasmic pH dynamics in maize pulvinal cells induced by gravity vector changes.Plant physiology · 2001Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Enhanced Cl- efflux during acidosis in plants is thought to play a role in cytosolic pH (pHc) homeostasis by short-circuiting the current produced by the electrogenic H+ pump, thereby facilitating enhanced H+ efflux from the cytosol. Using an intracellular perfusion technique, which enables experimental control of medium composition at the cytosolic surface of the plasma membrane of charophyte algae (Chara corallina), we show that lowered pHc activates Cl- efflux via two mechanisms. The first is a direct effect of pHc on Cl- efflux; the second mechanism comprises a pHc-induced increase in affinity for cytosolic free Ca2+ ([Ca2+]c), which also activates Cl- efflux. Cl- efflux was controlled by phosphorylation/dephosphorylation events, which override the responses to both pHc and [Ca2+]c. Whereas phosphorylation (perfusion with the catalytic subunit of protein kinase A in the presence of ATP) resulted in a complete inhibition of Cl- efflux, dephosphorylation (perfusion with alkaline phosphatase) arrested Cl- efflux at 60% of the maximal level in a manner that was both pHc and [Ca2+]c independent. These findings imply that plasma membrane anion channels play a central role in pHc regulation in plants, in addition to their established roles in turgor/volume regulation and signal transduction.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.