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Article

Vacuolar CAX1 and CAX3 influence auxin transport in guard cells via regulation of apoplastic pH.

Plant physiology - 1 Nov 2012

Cho Daeshik, Villiers Florent, Kroniewicz Laetitia, Lee Sangmee, Seo You Jin, Hirschi Kendal D, Leonhardt Nathalie, Kwak June M

Abstract excerpt

CATION EXCHANGERs CAX1 and CAX3 are vacuolar ion transporters involved in ion homeostasis in plants. Widely expressed in the plant, they mediate calcium transport from the cytosol to the vacuole lumen using the proton gradient across the tonoplast. Here, we report an unexpected role of CAX1 and CAX3 in regulating apoplastic pH and describe how they contribute to auxin transport using the guard cell's response as...

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Identifiers

PMID: 22932758
DOI: 10.1104/pp.112.201442
PMCID: PMC3490596

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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