Full text 2026

Complete chloroplast genome of <i>Camellia yokdonensis</i> Dung bis & Hakoda (Theaceae), a useful genomic data for elucidating evolution of Vietnamese endemic tea species

Nguyen NN, Do HDK.

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Abstract

Various endemic <i>Camellia</i> L. species have been identified in Vietnam. However, most genomic data of these endemic tea taxa have not been characterized. In the current study, we employed next-generation sequencing method to sequence and complete chloroplast genome of <i>Camellia yokdonensis</i> Dung bis & Hakoda, an endemic species found in the central area of Vietnam. This circular genome was 157,090 bp in length and had 37.7% GC content. In addition, this quadripartite genome consisted of a large single-copy region (86,657 bp and 35.3% GC), a small single-copy region (18,273 bp and 30.6% GC), and two inverted repeat regions (26,080 bp and 43% GC each). The annotation result revealed 79 protein-coding genes, 30 transfer RNA genes, and four ribosomal RNA genes. Phylogenetic analysis pointed out that <i>C. yokdonensis</i> was placed as a basal clade to other examined <i>Camellia</i> species. This study provides initial genomic data for further studies examining evolutionary history of <i>C. yokdonensis</i> and other related Theaceae taxa.

Keywords

Comparative genomics Theaceae Plastid Genome Plastome Evolution Tea Evolution