Phylotranscriptomics supports numerous polyploidization events and phylogenetic relationships in Nicotiana.

ABSTRACT:

Introduction

Nicotiana L. (Solanaceae) is of great scientific and economic importance, and polyploidization has been pivotal in shaping this genus. Despite many previous studies on the Nicotiana phylogenetic relationship and hybridization, evidence from whole genome data is still lacking.

Methods

In this study, we obtained 995 low-copy genes and plastid transcript fragments from the transcriptome datasets of 26 Nicotiana species, including all sections. We reconstructed the phylogenetic relationship and phylogenetic network of diploid species.

Results

The incongruence among gene trees showed that the formation of N. sylvestris involved incomplete lineage sorting. The nuclear-plastid discordance and nuclear introgression absence indicated th

SUBMITTER: Wang S 

PROVIDER: S-EPMC10421670 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature