Fig. 6
From: Intergenomic gene transfer in diploid and allopolyploid Gossypium
Mitochondrion-to-nucleus transfer-out hotspots in four cotton species. IGS: intergenic sequence. The top left corner shows the transfer hotspot of mitochondrial genomes in G. raimondii (D5). The top right corner shows the transfer hotspot of the mitochondrial genomes in G. arboreum (A2). The bottom left corner shows the transfer hotspot of mitochondrial genomes in G. hirsutum (AD1). The bottom left corner shows the transfer hotspot of mitochondrial genomes in G. barbadense (AD2). The horizontal axis indicates the nucleotide position in each mitochondrial genome. The density of mitochondrial-to-nuclear transfers is along the vertical axis. The arrows show the maximum density of IGT frequency