Characterization and phylogenetic analysis of the complete chloroplast genome of the rare endemic Isodon rivularis (Lamiaceae) from the Western Ghats
Year: 2025
Type: article
Abstract: Isodon rivularis (Wight ex Hook.f.) H. Hara is a perennial herb endemic to the Western Ghats. In this study, we sequenced and assembled its complete chloroplast genome, which is 152,286 bp in length. The plastome exhibits a typical quadripartite structure, comprising a large single-copy region of 83,159 bp, a small single-copy region of 17,671 bp, and a pair of inverted repeat regions of 25,728 bp each. The overall Guanine-Cytosine (GC) content of the genome is approximately 37.6%. A total of 114 genes were identified, including 80 protein-coding genes, 4 ribosomal RNA genes, and 30 transfer RNA genes. The two copies of the ycf15 gene, both containing an internal stop codon, and the rpoC2 gene, which includes a frameshift mutation, were identified as pseudogenes. Bayesian phylogenetic analysis placed I. rivularis within clade I, where it forms a sister lineage to all other species in the clade.
Institution: University of Calicut
Language: English
Domain: Life Sciences
Open Access status: diamond
Funders: Arthritis National Research Foundation, Department of Science and Technology, Ministry of Science and Technology, India, University Grants Commission, Kerala Forest Department, Korea National Arboretum, Science and Engineering Research Board, Kerala State Council for Science, Technology and Environment
OpenAlex ID: W4416525128