Fig. 6: The salt tolerance rice-SKC1HapA was derived from variation in O. rufipogon and selected in O. sativa.
From: Genome-wide association studies identify OsWRKY53 as a key regulator of salt tolerance in rice
A Nucleotide diversity across the SKC1(HKT1;5) genomic region. Top: the 21 sampled loci (including SKC1) located in the genomic region around the SKC1 gene on chromosome 1. Middle: nucleotide diversity pi of Hap X and A rice at the sampled loci. Bottom: the relative ratio of pi in HapA rice to HapX rice showed a selective sweep of ~300 kb surrounding SKC1 in HapA rice. B Haplotype network of the SKC1 gene. Each haplotype was separated by mutational changes, with hatches indicating mutational differences between linked haplotypes. aro, aromatic; tej, temperate japonica; trj, tropical japonica; adx, admix; wild, O. rufipogon. C Geographical distribution of the SKC1HapA in rice 3 K. The pie chart size was proportional to the number of accessions. D A model for OsWRKY53 trans-regulating OsMKK10.2-OsMPK6-OsSOS1 cascade and OsHKT1;5 in response to salt stress. OsWRKY53 trans-repressed OsMKK10.2 and OsHKT1;5 showing salt sensitivity (left), while WRKY53-CRISPR enhanced OsMKK10.2-OsMPK6-OsSOS1 and OsHKT1;5 conferring salt tolerance (right).
