Complete chloroplast genome of Synsepalum dulcificum D.: a magical plant that modifies sour flavors to sweet

Abstract

Synsepalum dulcificum D. belongs to the Sapotaceae family, which is an evergreen shrub native to tropical West Africa. It is a kind of magical plant that has the unique characteristic of modifying sour flavors to sweet. In this study, the chloroplast genome of S. dulcificum was sequenced, assembled, and annotated firstly. Chloroplast genome size of S. dulcificum is 158,463 bp, the circular chloroplast genome consists of four regions: a large single-copy region of 88,256 bp, two inverted repeat regions of 25,958 bp, and a small single-copy region of 18,669 bp, with the GC content of 36.87%. A total of 133 genes were annotated in the S. dulcificum chloroplast genome, of which 88 were protein-coding genes (PCGs), 37 were transfer RNA (tRNA) genes, and eight were ribosomal RNA (rRNA) genes. Phylogenetic analysis showed that Pouteria campechiana was most closely related to S. dulcificum. The study provides important genomic data for further utilization and breeding of S. dulcificum.

Keywords:

• Synsepalum dulcificum D.
• chloroplast genome
• phylogenetic relationship

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

The data that support the findings of this study are openly available in GenBank at https://www.ncbi.nlm.nih.gov/, reference number MT723946.

Figure 1. Maximum-likelihood tree based on the sequences of protein-coding genes of 24 plant species, include 10 species of Theaceae family, two species of Symplocaceae family, five species of Sapotaceae family, and six species of Pentaphylacaceae, and Hydrangea petiolaris which belongs to Hydrangeaceae family was used as the outgroup. The species and chloroplast genome accession numbers for the phylogenetic tree construction are Schima superba (KY406788), Schima sericans (KY406779), Gordonia lasianthus (KY406790), Gordonia brandegeei (KY406761), Camellia szechuanensis (KY406778), Camellia granthamiana (NC_038181), Stewartia sinii (NC_041470), Stewartia villosa (NC_041469), Hartia laotica (NC_041509), Stewartia serrata (NC_041467), Symplocos paniculata (MG719832), Symplocos costaricana (NC_035708), Argania spinosa (MK533159), Sideroxylon wightianum (NC_041130), Manilkara zapota (MN295595), Synsepalum dulcificum D. (MT723946), Pouteria campechiana (KX426215), Adinandra millettii (MF179492), Adinandra angustifolia (MF179491), Euryodendron excelsum (NC_039178), Ternstroemia gymnanthera (MF179490), Anneslea fragrans (MF179497), Pentaphylax euryoides (MF179498), and Hydrangea petiolaris (KY412466).

Additional information

Funding

This work was supported by Sci-tech Innovation System Construction for Tropical Crops Grant of Yunnan Province [No. RF2020].