Proteomic Analysis of a Rice Mutant sd58 Possessing a Novel d1 Allele of Heterotrimeric G Protein Alpha Subunit (RGA1) in Salt Stress with a Focus on ROS Scavenging.

ABSTRACT: High salinity severely restrains plant growth and results in decrease of crop yield in agricultural production. Thus, it is of great significance to discover the crucial regulators involved in plant salt resistance. Here, we report a novel mutant, sd58, which displays enhanced salt tolerance and dwarf phenotype, by screening from ethyl methane sulfonate (EMS) mutagenized rice mutant library. Genetic analysis showed that sd58 was caused by a single recessive locus. Map-based cloning and allelic test revealed that the phenotypes of sd58 were due to the mutation of RGA1, encoding the alpha subunit of heterotrimeric G protein (G_α). A point mutation (G to A) was identified at the splicing site (GT-AG) of the first intron in RGA1, which gives rise to

SUBMITTER: Peng P 

PROVIDER: S-EPMC6337198 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature