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Author Asano T., Hakata M., Nakamura H., Aoki N., Komatsu S., Ichikawa H., Hirochika H., Ohsugi R.
Title Functional characterisation of OsCPK21, a calcium-dependent protein kinase that confers salt tolerance in rice.
Abstract:
Calcium acts as a messenger in various signal transduction pathways in plants. Calcium-dependent protein kinases (CDPKs) play important roles in regulating downstream components in calcium signaling pathways. In rice, the CDPKs constitute a large multigene family consisting of 29 genes, but the biological functions and functional divergence or redundancy of most of these genes remain unclear. Using a mini-scale full-length cDNA overexpressor (FOX) gene hunting system, we generated 250 independent transgenic rice plants overexpressing individual rice CDPKs (CDPK FOX-rice lines). These CDPK FOX-rice lines were screened for salt stress tolerance. The survival rate of the OsCPK21-FOX plants was higher than that of wild-type (WT) plants grown under high salinity conditions. The inhibition of seedling growth by abscisic acid (ABA) treatment was greater in the OsCPK21-FOX plants than in WT plants. Several ABA- and high salinity-inducible genes were more highly expressed in the OsCPK21-FOX plants than in WT plants. These results suggest that OsCPK21 is involved in the positive regulation of the signaling pathways that are involved in the response to ABA and salt stress.
Journal Plant Mol. Biol.
Country Japan
Volume 75(1)
Pages 179-191
Year 2011
PubMed ID 21136139
PubMed Central ID -
DOI 10.1007/s11103-010-9717-1
URL -
Relation
Gene BZIP23 CDPK13 CDPK21 LEA3-1 NAC6 NHX1 P5CS RAB16A SOS1
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
-
Stages in Each Organ
- Muant Lines (Gene)
-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase