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Fig. 5 | BMC Genomics

Fig. 5

From: Genome-wide analysis of the basic leucine zipper (bZIP) transcription factor gene family in six legume genomes

Fig. 5

Whole genome duplication (WGD)-derived legume bZIPs genes. a The phylogenetic relationships of the six legumes based on the concentrated orthologous sequences of rbc and matk genes. Two WGD events, the Glycine-lineage-specific and early-legume WGD events, are indicated on the corresponding clades. b The Ks distribution of paralogs derived from WGD-derived duplicated genomic blocks in each legume. Two obvious peaks correspond to the old and recent legume-lineage WGD events. c, d The black lines in the ideogram show the chromosomal positions of all identified bZIP genes, and the duplicated bZIP pairs are linked by lines in soybean (c) and common bean (d). e Patterns of gene retention or loss indicated by two different informative tree topologies using common bean and Medicago as outgroups, respectively. The numbers for each pattern are shown in parentheses. f The Ks (x-axis) and Ka (y-axis) distribution for each duplicated legume bZIP gene pair. The red dashed line means the Ka/Ks ratio is equal to 1. Particularly, eight Gm duplicated pairs (red cross) and one Mt pair (blue cross), whose Ka/Ks values were greater than 0.5, are indicated in the inner figure (under the dashed line of Ka/Ks = 0.5). The red dashed line in inner figure means the Ka/Ks ratio is equal to 0.5. The numbers (1–9) correspond to duplicated pairs: 1: GmbZIP23-GmbZIP131; 2: GmbZIP49-GmbZIP109; 3: GmbZIP55-GmbZIP107; 4: GmbZIP8-GmbZIP113; 5: GmbZIP4-GmbZIP69; 6: GmbZIP26-GmbZIP42; 7: GmbZIP87-GmbZIP101; 8: GmbZIP65-GmbZIP113; 9: MtbZIP2-MtbZIP26

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