Article
Cell-specific vacuolar calcium storage mediated by CAX1 regulates apoplastic calcium concentration, gas exchange, and plant productivity in Arabidopsis.
The Plant cell - 1 Jan 2011
Conn Simon J, Gilliham Matthew, Athman Asmini, Schreiber Andreas W, Baumann Ute, Moller Isabel, Cheng Ning-Hui, Stancombe Matthew A, Hirschi Kendal D, Webb Alex A R, Burton Rachel, Kaiser Brent N, Tyerman Stephen D, Leigh Roger A
Abstract excerpt
The physiological role and mechanism of nutrient storage within vacuoles of specific cell types is poorly understood. Transcript profiles from Arabidopsis thaliana leaf cells differing in calcium concentration ([Ca], epidermis <10 mM versus mesophyll >60 mM) were compared using a microarray screen and single-cell quantitative PCR. Three tonoplast-localized Ca(2+) transporters, CAX1 (Ca(2+)/H(+)-antiporter), ACA4,...
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