The complete chloroplast genome of Dillenia philippinensis (Dilleniaceae), a near-threatened endemic tree from the Philippines

Genomic resources for Dillenia philippinensis Rolfe, a near-threatened tree species endemic to the Philippines, remain limited despite its significant medicinal, culinary, and ornamental uses. Here, we assembled and characterized the first complete chloroplast (cp) genome of D. philippinensis using Illumina sequencing technology. The cp genome exhibited a typical quadripartite structure with a total length of 161,584 bp, consisting of a large singlecopy region (89,409 bp), a small single-copy region (19,203 bp), and a pair of inverted repeat regions (26,486 bp each). The plastome contains 36 tRNA genes, eight rRNA genes, and 85 protein-coding genes, with an overall GC content of 36.3%. A total of 299 simple sequence repeat loci were identified, and an inverted repeat boundary comparison indicated a highly conserved structure. A phylogenetic analysis revealed close evolutionary relationships among D. philippinensis, D. turbinata, and D. indica, forming a well-supported monophyletic clade. The generated plastome data provide a valuable genomic resource for species identification, comparative genomics, and phylogenetic studies, and establish a baseline for future conservation genetic research, particularly for this near-threatened species.