A calcium sensor homolog required for plant salt tolerance
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.
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.
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.
AAAS