Sequence polymorphisms of <i>Crr1a</i> between resistant and susceptible alleles.

<p><i>Crr1a^G004</i>: Schematic representation of <i>Crr1a</i> allelic structure in resistant G004. Black boxes, exons; black lines, introns; arrowheads, large insertions. <i>Crr1a^A9709</i>: Sequence surrounding the site of the 357-bp insertion in susceptible A9707. White box, retrotransposon-like sequence. Bent arrow, transcription start site of <i>Crr1a^A9709</i> predicted by 2 independent 5′-RACE analyses. Putative target site duplication is underlined. <i>Crr1a^Chiifu-401</i>: Corresponding sequence from susceptible Chiifu-401. The 357-bp insertion in <i>Crr1a^A9709</i> was almost identical to the 3′-terminal region of a 4546-bp <i>copia</i>-like retrotransposon found in <i>Crr1a^Chiifu-401</i>.