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.
Liu
J
J
Department of Plant Sciences, University of Arizona, Tucson, AZ 85721, USA.
Zhu
J K
JK
D000595:Amino Acid Sequence; D000818:Animals; D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development* / Q000378:metabolism; D029681:Arabidopsis Proteins; D001665:Binding Sites; D019703:Calcineurin / Q000737:chemistry; D002118:Calcium / Q000378:metabolism* / Q000494:pharmacology; D002135:Calcium-Binding Proteins / Q000737:chemistry; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D017343:Genes, Plant; D017136:Ion Transport; D008969:Molecular Sequence Data; D009154:Mutation; D016366:Open Reading Frames; D010940:Plant Proteins / Q000737:chemistry* / Q000235:genetics*; D012441:Saccharomyces cerevisiae / Q000737:chemistry; D015398:Signal Transduction; D012964:Sodium / Q000378:metabolism / Q000494:pharmacology*
D029681:Arabidopsis Proteins; D002135:Calcium-Binding Proteins; D010940:Plant Proteins; C112941:SOS3 protein, Arabidopsis; D012964:Sodium; D019703:Calcineurin; D002118:Calcium