Fig. 4
From: Chromosome-level genome assembly and annotation of the prickly nightshade Solanum rostratum Dunal
Comparative genomic and evolution analysis of solanaceous species. (a) Phylogenetic topology constructed based on shared single-copy genes, and divergence times estimation of solanaceous species with Ipomoea trifida as an outgroup. All the nodes supported bootstrap values are 100. The blue bars on the nodes represent the divergence time range with 95% confidence intervals (million years ago, Mya). The below scale represents the geologic time divisions, covering Cretaceous (K), Paleogene (Pg), Neogene (N), and Quaternary (Q). (b) Whole Genome Duplication events revealed by synonymous substitution rate (Ks) analysis. The Ks frequency density distributions of syntenic orthologous or paralogous block pairwise within and between genomes of Solanum rostratum (Sros) and Vitis vinifera (Vvin), Ipomoea trifida (Itri), Solanum lycopersicum (Slyc), and Solanum melongena (Smel). (c) Whole-genome synteny between S. rostratum and two other closely related Solanum species (S. lycopersicum and S. melongena). Conserved syntenic blocks are highlighted with grey color corresponding to the twelve pseudo-chromosomes, indicating visible genome rearrangements occurred during evolution among Solanum species.
