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. 2014 Sep 26;14:253. doi: 10.1186/s12870-014-0253-z

Figure 4.

Figure 4

Nucleotide diversity in NBS-encoding gene cluster on SBI-05. The gene cluster is syntenous with gene clusters in rice (chr 11: Os11g11950, Os11g11960, Os11g11990) and maize (chr 4: GRMZM2G005347, GRMZM2G005452), with 6 candidate gene pairs for resistance to Setosphaeria turcica [28] highlighted and colour coded (red text: under balancing selection, green text: under purifying selection, black text: not under selection). Sorghum NBS-encoding genes belonging to the ancestral gene family also identified as being under purifying selection in rice [21] are highlighted with a blue star. Median-joining network trees are detailed for the ancestral gene pair St1B and St1A. Red nodes represent high frequency haplotypes. Blue nodes represent intermediate frequency haplotypes. Yellow nodes represent low frequency haplotypes. Green nodes represent S. propinquum.