A calcium sensor homolog required for plant salt tolerance.
basic_science · Level V
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Abstract
Excessive sodium (Na+) in salinized soils inhibits plant growth and development. A mutation in the SOS3 gene renders Arabidopsis thaliana plants hypersensitive to Na+-induced growth inhibition. SOS3 encodes a protein that shares significant sequence similarity with the calcineurin B subunit from yeast and neuronal calcium sensors from animals. The results suggest that intracellular calcium signaling through a calcineurin-like pathway mediates the beneficial effect of calcium on plant salt tolerance.
Medical subject headings
- Arabidopsis
- Arabidopsis Proteins
- Calcium
- Plant Proteins
- Sodium