Mitochondrial DNA. Part B, Resources最新文献

We report the first complete mitochondrial genome of the marine wood borer Dicyathifer mannii from Beihai, China. The genome is 17,158 bp long, containing 12 protein-coding genes, 22 transfer RNAs, and 2 ribosomal RNAs. The nucleotide composition is 40.7% T, 12.1% C, 21.8% A, and 25.5% G. Phylogenetic analysis indicates that the Beihai specimen clusters with conspecifics from Hainan, China, distinct from the Philippine population. This study provides valuable genomic resources for future research on D. mannii.

Trichoderma texanum is a species of saprotrophic and endolichenic fungus in the genus Trichoderma. In this study, we sequenced and analyzed the complete mitochondrial genome of T. texanum strain CSC21B0438. The mitochondrial genome of T. texanum is 31,361 base pairs and comprises 15 protein-coding genes, 27 transfer RNA genes, two ribosomal RNA genes, and one open reading frames. Phylogenetic analysis using the maximum-likelihood method revealed that T. texanum is closely related to T. koningiopsis. The mitochondrial genome of T. texanum reported in this study extends the understanding of its phylogeny and genomic characteristics.

The first complete mitochondrial genome of Heteractis doreensis (Quoy & Gaimard, 1833) was sequenced to clarify its mitogenomic features and phylogenetic position. The circular genome is 20,720 bp long with 60.34% A+T content, comprising 13 protein-coding genes, two ribosomal RNA genes, two transfer RNA genes, and one putative open reading frame. Maximum-likelihood phylogenetic analysis of 19 Hexacorallia species revealed that H. doreensis clusters with Stichodactyla haddoni and Heteractis crispa in a strongly supported clade (bootstrap = 96%) within Stichodactylidae. These findings provide valuable molecular insights into the evolution and phylogeography of H. doreensis, supporting future research on its conservation and breeding.

This study presents the first complete chloroplast genome assembly of Calophyllum membranaceum Gander & Champ 1849, a species noted for its pharmacologically active metabolites. The chloroplast genome of C. membranaceum measures 160,820 bp in length and an overall GC content of about 36.4%. It contains a total of 131 genes, which consisted of 86 protein-coding genes, 37 tRNAs, and 8 rRNAs. The phylogenetic analysis based on chloroplast data from the Malpighiales order suggests a close relationship between C. membranaceum and C. brasiliense. Our results provide valuable genomic resource that support future research on genetic resources, conservation, and medicine.

Blumea axillaris is a medicinal herbaceous plant belonging to the genus Blumea in the Asteraceae family. This study reports the first complete chloroplast genome of B. axillaris, assembled as 151,043 bp with a typical quadripartite structure. It contains 134 genes (90 protein-coding, 36 tRNA, and 8 rRNA). A double inversion was detected relative to Barnadesia caryophylla. Phylogenetic analysis confirmed the sister relationship between B. axillaris and B. oxyodonta. These results provide valuable chloroplast resources for phylogenetic studies and resource development of B. axillaris.

Jasminum lanceolaria Roxb. (1996) is an important medicinal herb with diverse applications. It is native to China and belongs to the family Oleaceae. In this study, we reported the complete chloroplast genome sequence of J. lanceolaria. The assembled genome has a total length of 163,015 bp, with an overall GC content of 38.87%, and contained 133 genes, including 87 protein-coding genes, 38 tRNA genes, and eight rRNA genes. Phylogenetic analysis revealed that J. lanceolaria was closely related to Jasminum polyanthum. These findings provided valuable genomic resources and a reference for the taxonomic identification of J. lanceolaria.

Viburnum mongolicum (Pall.) Rehd. 1908 is a medicinal and ornamental plant of the Adoxaceae family, yet its chloroplast genome had not been previously characterized. The V. mongolicum chloroplast genome was sequenced on an Illumina platform, followed by assembly, annotation and comparative analysis through bioinformatic tools. The genome length is 158,347 bp, after annotation, a total of 131 genes were identified. Comparative analyses reveal high similarity to other Adoxaceae species, with notable variations in gene content and boundary regions. Phylogenetic analysis demonstrate that V. mongolicum is closely related to V. carlesii and V. lentago. The addition of the V. mongolicum chloroplast genome to the genomic resources of Viburnum enhances our understanding of its phylogeny, supporting future work in species identification and the conservation of genetic resources.

Tetrapanax papyrifer (Hook.) K. Koch is an important medicinal plant in Chinese Yao medicine. In this study, the complete chloroplast genome was sequenced using high-throughput sequencing technology. Its complete chloroplast genome spans 156,165 bp in total length, comprising a large single-copy region of 86,237 bp and a small single-copy region of 17,956 bp, separated by a pair of inverted repeat regions (25,986 bp each). Phylogenetic analysis based on chloroplast genomes revealed that the genomic structure of T. papyrifer shows similarities with species from the genus Heptapleurum in the Araliaceae family. The presented chloroplast genome will facilitate further phylogenetic analyses and inform conservation strategies for this species.

We report the first complete mitochondrial genome of the palecheek parrotfish, Chlorurus japanensis. The 16,694 bp circular genome contains the standard vertebrate gene complement: 13 protein-coding genes, 22 transfer RNAs, two ribosomal RNAs, and one non-coding control region (D-loop). As is typical, most genes are located on the H-strand, with only the nd6 gene and eight tRNAs encoded on the L-strand. A tRNA gene rearrangement pattern conserved among parrotfishes was also identified. Phylogenetic analysis placed C. japanensis within the tribe Scarini, where it formed a well-supported clade with other Chlorurus species. This phylogenetic relationship reflects their shared ecological specialization in coral reef environments.

Chrysanthemum morifolium var. 'Jinsihuang', an ornamental chrysanthemum with notable medicinal and edible value, had its complete chloroplast (cp) genome sequenced, assembled, and annotated in this study. The cp genome is 151,060 bp long, exhibiting a typical quadripartite structure: an 82,858 bp large single-copy (LSC) region, an 18,294 bp small single-copy (SSC) region, and two inverted repeat (IR) regions (24,954 bp each). Phylogenetic analysis revealed that it is most closely related to Chrysanthemum × morifolium. This study provides valuable genomic resources for understanding its phylogenetic relationships and genetic diversity, contributing to future research on its evolution and conservation.