Genome-wide transcriptional analysis of salinity stressed japonica and indica rice genotypes during panicle initiation stage.

ABSTRACT: Rice yield is most sensitive to salinity stress imposed during the panicle initiation (PI) stage. In this study, we have focused on physiological and transcriptional responses of four rice genotypes exposed to salinity stress during PI. The genotypes selected included a pair of indicas (IR63731 and IR29) and a pair of japonica (Agami and M103) rice subspecies with contrasting salt tolerance. Physiological characterization showed that tolerant genotypes maintained a much lower shoot Na+ concentration relative to sensitive genotypes under salinity stress. Global gene expression analysis revealed a strikingly large number of genes which are induced by salinity stress in sensitive genotypes, IR29 and M103 relative to tolerant lines. We found 19 probe sets to be commonly induced in all four gen

SUBMITTER: Walia H 

PROVIDER: S-EPMC1805040 | biostudies-literature | 2007 Mar

REPOSITORIES: biostudies-literature