Skip to main content
Fig. 4 | BMC Evolutionary Biology

Fig. 4

From: Diversification of defensins and NLRs in Arabidopsis species by different evolutionary mechanisms

Fig. 4

Distribution of sites under natural selection and gene conversion in domains of NLR and DEFL proteins. a Proportion of sites under positive or negative selection detected with FUBAR along the residues encoding the major NLR protein domains. In both CNLs and TNLs the LRR and subsequent residues are more often target of diversifying evolution, while in CNLs the NB-ARC domain reported a larger proportion of sites under negative selection. b Example of the distribution of statistically significant recombination tracks (Geneconv), recombination breakpoints (GARD) and sites under positive selection (FUBAR applied on partitions), in the regions encoding the coil-coil domain (red), NB-ARC (blue) and LRR domain (green) on CNL group GC1. Yellow pins indicate 28 codon positions under positive selection and purple flags identify recombination breakpoints. For the sake of clarity the 65 positions under negative selection are not indicated nor genes where conversion was not detected. Recombination tracks between two or more genes are represented with blocks of the same color. For scaling purposes recombination tracks are represented three times smaller than originally identified in nucleotide alignments. c Proportion of sites under positive or negative selection detected with FUBAR analyses regarding gene recombination, along the residues encoding the signal and mature peptides of DEFL genes. d Example of the distribution of statistically significant recombination tracks and sites under positive or negative selection on the regions encoding the signal (pink) and mature peptides (red) of DEFL group S43. Red pins indicate three codon sites under negative natural selection, yellow pins indicate six codon positions under positive selection and purple diamonds indicate positions encoding conserved cysteine residues. Recombination tracks and scaling are represented as in B

Back to article page