# The complete chloroplast genome sequence and phylogenetic analysis of Tragopogon pratensis L. (Asteraceae)

## TL;DR

This paper reports the full chloroplast genome of Tragopogon pratensis and shows it is closely related to T. dubius within a single evolutionary lineage.

## Contribution

The first complete chloroplast genome sequence for Tragopogon pratensis and its phylogenetic placement within the genus.

## Key findings

- The chloroplast genome of T. pratensis is 153,002 bp long with typical quadripartite structure.
- Phylogenetic analysis shows T. pratensis is most closely related to T. dubius.
- Tragopogon is confirmed as a monophyletic genus based on chloroplast genome data.

## Abstract

Currently, the phylogenetic relationships of Tragopogon pratensis Linnaeus (1753) remain unclear. This study presents the first report on the complete chloroplast genome of T. pratensis, which is a quadripartite structure with a length of 153,002 bp and containing a large single copy (LSC, 84,225 bp) region, a small single copy (SSC, 18,407 bp) region, a pair of inverted repeats (IR, 25,185 bp) regions. A total of 134 genes are identified, including 87 protein-coding genes, 8 rRNA genes, 37 tRNA genes, and 2 pseudogenes. Phylogenetic analysis revealed that T. pratensis is most closely related to T. dubius and that Tragopogon is a monophyletic genus.