Physical maps of the wheat and barley loci orthologous to Lrk10. (a) Wheat genomic fragment (λW1AS) containing the three genes, Lrk10, Tak10, and ψLrr10. (b) Two barley loci, XHv1.1 and XHv1.2, containing the Hv1Lrk1, Hv1Lrk2, Hv1Tak1, Hv1Tak2, Hv1Lrr1, and Hv1Lrr2 genes homologous to the wheat Lrk10, Tak10, and ψLrr10, respectively. The Hv1PST gene corresponds to an ORF of 226 aa detected by bcm genefinder. The solid arrows start at the putative translation start sites (ATG) and indicate the direction of transcription. The black boxes represent the introns (I1 and I2) found in the receptor-like kinase genes whereas the open arrows indicate interruptions in ORFs.