Characterization of the plastid and mitochondrial genomes of Aeschynomene indica (Fabaceae)

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The current study undertook a detailed analysis of both the plastid and mitochondrial genomes (plastome and mitogenome) of Aeschynomene indica (Fabaceae), a plant notable both as a problematic weed in global rice cultivation and for its medicinal properties. The primary goal was to furnish comprehensive organelle genome resources and explore genomic characteristics. A sample of A. indica was collected and sequenced using a next-generation sequencing technique. The resulting plastome is 160,502 base pairs (bp) long and includes 128 genes—comprising 83 protein-coding genes, 37 transfer RNA (tRNA) genes, and eight ribosomal RNA (rRNA) genes. The plastome displays a typical quadripartite structure consisting of a large single-copy region (89,347 bp), a small single-copy region (19,803 bp), and two inverted repeat regions (each 25,676 bp). The mitogenome spans 388,249 bp and contains 57 genes, which include 34 protein-coding genes, 20 tRNA genes, and four rRNA genes. Phylogenetic analyses leveraging these organelle genome sequences produced well-resolved trees, elucidating the phylogenetic position of A. indica within the Fabaceae. The organelle genomes of A. indica presented in this study offer valuable genomic resources that will facilitate further research in plant systematics and biotechnology.

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