The Rhg1/Rfs2 genomic region altered root development. Panel A; soybean NILs at 2 weeks pre-SCN inoculation show different root morphologies, Rhg1/Rfs2 inhibited germination and early root growth. Panel B; the root morphologies co-segregated with the allele of GmRLK18-1 at the Rhg1/Rfs2 locus as shown by the 3 bands generated by intron located marker TMD1 (arrowed). R indicated the resistant allele from Forrest; S the susceptible allele from Essex; and H indicated the heterozygous state for the Rhg1/Rfs2 locus. Panel C showed the distribution of root mass (rfw was root fresh weight) among 20 heterozygous plants. Panel D showed the distribution of root mass among 20 susceptible plants. Panel E showed the distribution of root mass among 20 resistant plants.
Srour et al. BMC Genomics 2012 13:368 doi:10.1186/1471-2164-13-368