Mitogenome sequencing provides an understanding of the evolutionary mechanism of mitogenome formation, mechanisms driving plant gene order, genome structure, and migration sequences. Data on the mitochondrial genome for family Convolvulaceae members is lacking. , also known as shankhpushpi, is an important medicinal plant under the family Convolvulaceae, widely used in the Ayurvedic system of medicine. We identified the mitogenome of using the Illumina mate-pair sequencing platform, and annotated using bioinformatics approaches in the present study. The mitogenome of was 344184 bp in length and comprised 46 unique coding genes, including 31 protein-coding genes (PCGs), 12 tRNA genes, and 3 rRNA genes. The secondary structure of tRNAs shows that all the tRNAs can be folded into canonical clover-leaf secondary structures, except three , and . Measurement of the skewness of the nucleotide composition showed that the AT and GC skew is positive, indicating higher A's and G's in the mitogenome of . The Ka/Ks ratios of 11 protein-coding genes (, , , , , , , , , , ) were <1, indicating that these genes were under purifying selection. Synteny and gene order analysis were performed to identify homologous genes among the related species. Synteny blocks representing nine genes (, , , , , , , , nad7) were observed in all the species of . Gene order comparison showed that a high level of gene rearrangement has occurred among all the species of . The mitogenome data obtained in the present study could be used as the family representative for future studies, as there is no complex taxonomic history associated with this plant.
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