The Chloroplast Genome of the Endemic Species Abrus bottae Deflers: Comparative and Phylogenetic Analysis with Closely Related Species of Abreae Hutch

Abrus bottae belongs to the subfamily Papilionoideae DC. and the family Fabaceae Lind., endemic to the Arabian Peninsula. This genus encounters numerous taxonomic issues concerning both the quantity of species within the genus and the systematic relationships among its species. Notably, there is a complete absence of sequence data in the GenBank database for this species. A molecular and phylogenetic study of the chloroplast genome of the species A. bottae was performed in this work. The chloroplast genome is 152,540 bp in size and exhibits a typical quadripartite structure, consisting of a substantial single-copy region of 83,507 bp, a small single-copy region of 17,681 bp, and a pair of inverted repeat regions of 25,676 bp each. The chloroplast genome of Abrus bottae encompasses 130 genes. An analysis of nucleoside diversity revealed 26 nucleotide polymorphism sites with Pi values (a measure of genetic variation within species) ≥ 0.04, serving as hotspots of variation. This work represents the first molecular phylogenetic study on the endemic species Abrus bottae and presents a comparative and phylogenetic analysis of the cp genomes of related taxa within the tribe Abreae. These outcomes can be used to develop DNA barcodes to study variation among the Abrus species.