Figure 1.

The organization of the Xa26 gene family in four rice varieties, Minghui 63 (A), Nipponbare (B), Teqing (C), and 93-11 (D). The members of the Xa26 family and their transcription orientation are indicated by red (phylogenetic group I) and green (phylogenetic group II) arrows. The figure between the members of the family indicates nucleotide sequence identity (%) of predicted coding regions of adjacent members. The dotted slant indicates the border between two sequence contigs. The question mark indicates that the neighborhood of two adjacent contigs is deduced according to sequence similarity and the Xa26 family organization in the other three varieties. The double slants in B indicate that these regions are not on scale. The two-arrowhead line indicates repeat regions. The intergenic regions showing the same color among the four rice varieties indicate that the corresponding regions, flanked by the same orthologs, share more than 95% (purple color), 97% (brown color), or 98% to 100% (light blue color) sequence identity. The accession numbers of the sequence fragments of Nipponbare are AC146937 and AC116367, and the accession numbers of sequence fragments of 93-11 are AAAA02033155, AAAA02033250, AAAA02033253, AAAA02032784, and AAAA02033267 (from left to right).