Phylogenomic discordance suggests polytomies along the backbone of the large genus Solanum.

ABSTRACT:

Premise

Evolutionary studies require solid phylogenetic frameworks, but increased volumes of phylogenomic data have revealed incongruent topologies among gene trees in many organisms both between and within genomes. Some of these incongruences indicate polytomies that may remain impossible to resolve. Here we investigate the degree of gene-tree discordance in Solanum, one of the largest flowering plant genera that includes the cultivated potato, tomato, and eggplant, as well as 24 minor crop plants.

Methods

A densely sampled species-level phylogeny of Solanum is built using unpublished and publicly available Sanger sequences comprising 60% of all accepted species (742 spp.) and nine regions (ITS, waxy, and seven plastid markers). The robustness of this topology is tested by

SUBMITTER: Gagnon E 

PROVIDER: S-EPMC9321964 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature