# Complete chloroplast genome data of Plumbago auriculata f. alba (Pasq.) Z. X. Peng, a medicinal and ornamental species

## TL;DR

This paper presents the complete chloroplast genome of a medicinal and ornamental plant, providing insights into its genetic structure and evolutionary relationships.

## Contribution

The study provides the first complete chloroplast genome sequence for Plumbago auriculata f. alba, enriching genetic resources for molecular breeding and phylogenetic research.

## Key findings

- The chloroplast genome is 169,357 bp long with a typical quadripartite structure.
- The genome contains 129 annotated genes and 104 SSR loci, dominated by mononucleotide repeats.
- Phylogenetic analysis shows P. auriculata f. alba is closely related to Plumbago auriculata with 100% bootstrap support.

## Abstract

Plumbago auriculata f. alba (Pasq.) Z. X. Peng, a perennial evergreen shrub, is evaluated for both its medicinal properties and ornamental value. It is usually used to treat inflammatory disorders and skin infections, while its white flowers make it a popular landscape plant. In this study, the complete chloroplast genome of Plumbago auriculata f. alba (Pasq.) Z. X. Peng was sequenced using the Illumina HiSeq platform. The circular chloroplast genome has a total length of 169,357 (bp), exhibiting the typical quadripartite structure of angiosperms: a large single-copy (LSC) region of 92,056 bp, a small single-copy (SSC) region of 13,321 bp, and two inverted repeat (IR) regions (IRa and IRb) each of 31,990 bp. A total of 129 genes were annotated, including 84 protein-coding genes (PCGs), 37 transfer RNA (tRNA) genes, and 8 ribosomal RNA (rRNA) genes. Simple sequence repeat (SSR) analysis identified 104 SSR loci, with mononucleotide repeats (73 loci, 70.19 %) being the most abundant, attended by trinucleotide repeats (13 loci, 12.5 %). Phylogenetic tree showed that P. auriculata f. alba (Pasq.) Z. X. Peng is most closely related to Plumbago auriculata with 100 % bootstrap support. These chloroplast genome data enrich the genetic resources of Plumbaginaceae, providing a foundation for molecular breeding, genetic diversity analysis, and phylogenetic research of Plumbago auriculata complex.