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

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.