Jul 2026· Korean Journal of Plant Taxonomy· 0 citations· 36 references
TL;DR
The complete plastome of C. erectus is characterized, providing the first complete cp genome resource for C. erectus, and offering a foundation for further phylogenomic and conservation studies within Arecaceae.
Abstract
Calamus erectus Roxb. is a medicinally important and vulnerable shrub native to Bangladesh. Despite its ecological and ethnobotanical importance, no complete chloroplast genome has been reported for this species. In this study, we characterized the complete plastome of C. erectus. The assembled plastome was 157,887 bp in length and exhibited a typical quadripartite circular structure, comprising a large single-copy (85,756 bp), a small single-copy (17,593 bp), and a pair of inverted repeats (27,269 bp each). The plastome encoded 131 genes, consisting of 86 protein-coding genes, 37 transfer RNA genes, and eight ribosomal RNA genes. Seventy simple sequence repeats were identified, mostly mononucleotides (49). A codon usage analysis exhibited a strong preference for codons ending in the adenine or uracil base, reflecting an overall A/T bias in the genome. Plastome-based phylogenetic analyses placed C. erectus within the monophyletic tribe Calameae and indicated a close relationship with C. exilis. A molecular dating analysis indicated that C. erectus diverged approximately 7.6 million years ago during the Tortonian age, while the subfamily Calamoideae originated about 46.2 million years ago in the early Miocene. These findings provide the first complete cp genome resource for C. erectus, offering a foundation for further phylogenomic and conservation studies within Arecaceae.
Abstract Veratrum dolichopetalum O.Loes. (1926) is a perennial herbaceous plant in the family Melanthiaceae that is geographically restricted to northern Korea and the Ussuri River basin of Russia. Here, we present the first complete chloroplast genome of V. dolichopetalum, which is 153,673 bp in length and contains 82 protein-coding gene copies, 38 tRNA genes, and 8 rRNA genes. The genome exhibits the typical quadripartite structure, comprising a large single copy region (83,352 bp), a small single copy region (17,603 bp), and a pair of inverted repeats (26,359 bp each). Phylogenetic analysis based on 77 orthologous chloroplast protein-coding genes indicated that V. dolichopetalum is closely related to V. oxysepalum Turcz. The complete chloroplast genome reported here provides essential genomic resources for further evolutionary studies of Veratrum.
Hyeonjin Kim, Tae-Soo Jang· Mitochondrial DNA Part B: Re...· 0 citations
An integrated analysis of the F. mandshurica mitochondrial genome is presented, revealing its unique structural and evolutionary characteristics and enrich the mitochondrial genome resources for Oleaceae species and highlight the potential of mitochondrial genes to elucidate plant evolutionary history.
Dongmei Wang, Xinrui Wang, Hong-Da Song et al.· BMC Plant Biology· 0 citations
This work offers novel insights into genomic diversity and evolutionary history of sampled Zehneria species, providing a critical molecular resource for future taxonomic and phylogenetic studies within Cucurbitaceae.
Michael Gichuru Karendi, Caroline Njambi Ndungu, Elijah Mkala Mbadi et al.· Genetica· 0 citations
Abstract Murdannia medica is a Vietnamese traditional medicinal herb. Here, we report DNA super‑barcodes comprising the complete plastid genome (plastome, 177,455 bp) and 45S nuclear ribosomal DNA (45S nrDNA, 5,741 bp) of M. medica. The plastome has a large single‑copy (LSC, 100,132 bp), a small single‑copy (SSC, 21,125 bp), and a pair of inverted repeats (IRs) of 28,099 bp each. It contains 115 annotated genes and has an overall A/T content of 68.2%. Plastome‑based phylogenetic analyses show that M. medica sister with M. edulis. These new genomic resources provide a valuable foundation for future cultivation, conservation, and systematic investigations of M. medica.
Lam Duong Nguyen Xuan, Anh Tran Thi Van, Hong-Zhan Dang et al.· Mitochondrial DNA Part B: Re...· 0 citations
The first complete mitogenome of Eurostus validus is reported and indicates that both mutation pressure and natural selection shape codon usage bias, with natural selection playing a dominant role.
Dongkai Liu, Chao Xue, Yingyin Gao· Journal of the Entomological...· 0 citations
Abstract Urceola huaitingii (Chun & Tsiang) D. J. Middleton 1994, a member of the Apocynaceae family, is widely distributed across southern and southwestern China and has been traditionally used in folk medicine to treat hemiplegia and paralysis. In this study, we report the first complete chloroplast genome of U. huaitingii and perform phylogenetic analysis with 30 related species within the Apocynaceae. The chloroplast genome of U. huaitingii is 155,182 bp in length and has a GC content of 38.11%. It displays a typical quadripartite structure, consisting of a large single-copy (LSC) region of 85,254 bp, a small single-copy (SSC) region of 18,242 bp, and two inverted repeat (IR) regions of 25,843 bp each. A total of 111 unique genes were annotated, including 77 protein-coding genes, 30 transfer RNA (tRNA) genes, and 4 ribosomal RNA (rRNA) genes. Phylogenetic analysis revealed that U. huaitingii is closely related to the genera Aganosma, Trachelospermum, and Amalocalyx. This study provides the first chloroplast genomic resource for the genus Urceola, laying a foundation for future investigations into its evolutionary relationships. It also contributes to future molecular and phylogenetic studies within the Apocynaceae family.
Xianglan Liang, Guoan Shen, Lichai Yuan et al.· Mitochondrial DNA Part B: Re...· 0 citations
