{"title":"Characterization of the complete mitochondrial genome and phylogenetic analysis of <i>Tetraselmis marina</i> (Cienkowski) R.E.Norris, Hori & Chihara 1980.","authors":"Changhong Cheng, Cheng-Hao Chen, Fangfang Yang","doi":"10.1080/23802359.2026.2657109","DOIUrl":"https://doi.org/10.1080/23802359.2026.2657109","url":null,"abstract":"<p><p><i>Tetraselmis marina</i> (Cienkowski) R.E.Norris, Hori & Chihara 1980, a marine green microalga, holds considerable value in aquaculture due to its well-rounded nutritional profile. Gaining insights into the mitochondrial genome of this species is crucial for advancing studies on its phylogeny and evolutionary relationships. In the present research, we for the first time characterized the complete mitochondrial genome of <i>T. marina</i>. This genome forms a circular structure with a total length of 51,196 base pairs (bp), encompassing 34 protein-coding genes, 24 transfer RNA (tRNA) genes, and 3 ribosomal RNA (rRNA) genes. Nucleotide composition analysis showed a relatively balanced distribution: adenine (A) accounted for 32.9%, thymine (T) for 33.8%, guanine (G) for 16.5%, and cytosine (C) for 16.8%. Phylogenetic investigations demonstrated that <i>T. marina</i> is classified within the Chlorodendraceae family and shares the closest evolutionary affinity with <i>Tetraselmis sp</i>. CCMP 881.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"636-639"},"PeriodicalIF":0.7,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13097178/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147775741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carlos A Santamaria, Serena K Gakhal, Olivia T Whittaker
{"title":"The complete mitogenome of <i>Ligia barack</i> (Crustacea, Isopoda, Ligiidae), a recently described intertidal isopod species from the remote island of Nihoa.","authors":"Carlos A Santamaria, Serena K Gakhal, Olivia T Whittaker","doi":"10.1080/23802359.2026.2657112","DOIUrl":"https://doi.org/10.1080/23802359.2026.2657112","url":null,"abstract":"<p><p>We report the complete mitogenome of Ligia barack (Santamaria, Bork, Larson & Link 2025), an endemic isopod from Nihoa, Hawaii. The mitogenome contains 13 protein-coding genes, 22 transfer RNAs, two ribosomal RNAs, and a non-coding control region. Most genes follow the typical Oniscidea orientation, though changes in tRNA composition and order are observed when compared to other Ligia species. Phylogenetic analysis suggests <i>L. barack</i> is closely related to another Ligia species from the main Hawaiian Islands. Our findings highlight within-genus mitochondrial variation in <i>Ligia</i> Fabricius 1798 and demonstrate the utility of low-coverage sequencing for mitogenomic studies in non-model terrestrial isopods.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"625-629"},"PeriodicalIF":0.7,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13097158/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147776075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characterization and comparative analysis of the complete mitochondrial genome of <i>Ferula sinkiangensis</i> (K. M. Shen, 1975) (Apiales: Apiaceae).","authors":"Xinqiao Deng, Congzhao Fan, Wendan Song, Zhancang Ma, Guoping Wang, Ping Yan","doi":"10.1080/23802359.2026.2621449","DOIUrl":"https://doi.org/10.1080/23802359.2026.2621449","url":null,"abstract":"<p><p>This study presents the first complete mitochondrial genome of <i>Ferula sinkiangensis</i>, a medicinal plant formally recognized in the Chinese Pharmacopoeia since 1977. The assembled mitogenome is 416,958 bp in length, encoding 97 genes, and exhibits a structurally complex architecture characterized by 28 large repeat pairs. Phylogenetic analysis robustly places <i>F. sinkiangensis</i> within a fully supported clade. These findings underscore the necessity of long-read sequencing to fully resolve its genomic isoforms.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"664-669"},"PeriodicalIF":0.7,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13097163/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147776203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The complete mitochondrial genome of <i>Cornus officinalis</i> reveals a multipartite structure and clarifies its phylogenetic position.","authors":"Mary Tolulope Olutayo, Zhuo Jiang, Hao Zhou, Hengchang Wang, Huajie Zhang","doi":"10.1080/23802359.2026.2658962","DOIUrl":"https://doi.org/10.1080/23802359.2026.2658962","url":null,"abstract":"<p><p><i>Cornus officinalis</i> Siebold & Zucc. 1839 is a medicinally important species of Cornaceae, yet mitochondrial genomic information for this genus has remained unavailable. In this study, we assembled and annotated the mitochondrial genome of <i>C. officinalis</i> using PacBio HiFi sequencing data. The mitogenome comprises three circular molecules totaling 556,620 bp with similar GC contents of approximately 45%. A total of 70 genes were identified, including 43 protein-coding genes, 23 transfer RNA genes, and four ribosomal RNA genes. Phylogenetic analysis based on mitochondrial protein-coding genes placed <i>C. officinalis</i> in a well-supported clade with Hydrangeaceae, Ericaceae, and Primulaceae. This first mitochondrial genome reported for Cornaceae provides a useful resource for mitochondrial genome evolution and angiosperm phylogenetic studies.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"659-663"},"PeriodicalIF":0.7,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13097176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147776132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Complete mitochondrial genome of the snowy sheathbill (<i>Chionis albus</i>, Charadriiformes: chionidae) and its phylogenetic implications.","authors":"Jihee Kim, Jong-U Kim, Jeong-Hoon Kim","doi":"10.1080/23802359.2026.2658389","DOIUrl":"https://doi.org/10.1080/23802359.2026.2658389","url":null,"abstract":"<p><p>The snowy sheathbill (<i>Chionis albus</i> (Gmelin, 1789)) is a coastal Antarctic bird that breeds on Antarctic and sub-Antarctic islands. In this study, we report the first complete mitochondrial genome sequence of <i>C. albus</i>. The mitogenome is circular, 19,116 bp in length, and contains 13 protein-coding genes (PCGs), including an <i>ND3</i> gene with an extra nucleotide, 22 transfer RNAs (tRNAs), and two ribosomal RNAs (rRNAs). Notably, a duplicated region of ∼2.3 kb includes <i>ND6</i> and two tRNAs. The overall nucleotide composition is 30.29% A, 30.37% C, 14.56% G, and 24.78% T, with a GC content of 44.93%. Phylogenetic analysis based on all 13 PCGs placed <i>C. albus</i> firmly within Charadriiformes and clustered with <i>C. minor</i> and, more distantly, with <i>Burhinus bistriatus</i>. This newly characterized mitogenome provides valuable resources for future studies on the phylogeny, molecular evolution, and biogeography of Charadriiformes and the family Chionidae.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"630-635"},"PeriodicalIF":0.7,"publicationDate":"2026-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13094258/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147775709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nga Thi Thu Nguyen, Changyoung Lee, Manivanh Yongsa, Quan Huu Nguyen, Sangjin Jo, Thuong Danh Sy, Mau Hoang Chu
{"title":"Complete chloroplast genome of the endemic species <i>Hoya lockii</i> (Apocynaceae) from Viet Nam.","authors":"Nga Thi Thu Nguyen, Changyoung Lee, Manivanh Yongsa, Quan Huu Nguyen, Sangjin Jo, Thuong Danh Sy, Mau Hoang Chu","doi":"10.1080/23802359.2026.2658954","DOIUrl":"https://doi.org/10.1080/23802359.2026.2658954","url":null,"abstract":"<p><p>Here we report the first chloroplast genome of Hoya lockii V.T. Pham & Aver., sequenced as a circular DNA molecule (177,063 bp) comprising a large single-copy region (91,635 bp), a small single-copy region (2,242 bp), and two inverted repeats (41,593 bp), with a GC content of 36.9%. A total of 144 genes were annotated, including 98 protein-coding, 38 tRNA, and eight rRNA genes. Phylogenetic reconstruction based on 79 protein-coding genes from 50 Apocynaceae species placed H. lockii as sister to Hoya exilis with strong bootstrap support (93%). These results indicate pronounced SSC contraction and IR expansion, consistent with Hoya evolution.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"653-658"},"PeriodicalIF":0.7,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13094257/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147775674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characterization and phylogenetic analysis of the complete mitochondrial genome of <i>Catathelasma laorentou</i> Z.W. Ge et al. 2020.","authors":"Xiaoqin Zheng, Xingting Huang, Maojie Zhao, Guohua Shen","doi":"10.1080/23802359.2026.2654106","DOIUrl":"https://doi.org/10.1080/23802359.2026.2654106","url":null,"abstract":"<p><p>The mitochondrial genome of <i>C. laorentou</i> was sequenced using Illumina in this study. The length of the circular mitochondrial genome is 56,088 bp, with a GC content of 30.26%. It encodes 44 genes, including 14 core protein coding genes (PCGs), 26 tRNA genes, 2 rRNA genes, 1 <i>rps3</i> gene, and 1 free open reading frame (ORF). A phylogenetic tree was constructed based on a joint dataset of 14 mitochondrial core PCGs, which indicate that <i>C. laorentou</i> has the closest genetic relationship with <i>Infundibulycybe hongyinpan</i> and <i>Leucopaxillus giganteus</i>. This study provides the first mitogenome resource for the genus <i>Catathelasma</i>, offering crucial molecular data for its taxonomic placement and enriching fungal mitochondrial genome databases.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"640-645"},"PeriodicalIF":0.7,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13094290/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147776182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yizhu Chen, Yuansheng Zhu, Yue Wang, Dengqiang Wang
{"title":"The complete mitochondrial genome and phylogenetic position of <i>Triplophysa qiubeiensis</i> (Cypriniformes: Nemacheilidae).","authors":"Yizhu Chen, Yuansheng Zhu, Yue Wang, Dengqiang Wang","doi":"10.1080/23802359.2026.2657110","DOIUrl":"10.1080/23802359.2026.2657110","url":null,"abstract":"<p><p>In this study, the complete mitochondrial genome of <i>Triplophysa qiubeiensis</i> (Cypriniformes: Nemacheilidae) was determined using the Illumina Novaseq 6000 platform. The mitogenome is 16,584 bp in length, and exhibits a gene composition and arrangement typical of the teleost fishes, containing 13 protein-coding genes, 22 tRNA genes, two ribosomal RNA genes, and a control region. The overall nucleotide composition was 30.63% A, 27.18% T, 16.37% G, and 25.82% C. Phylogenetic analysis based on complete mitogenome sequences placed <i>T. qiubeiensis</i> within a clade of <i>Triplophysa</i> species primarily distributed in the Yunnan-Guizhou Plateau of southwestern China.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"614-618"},"PeriodicalIF":0.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13084831/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147723182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Simin Chen, Chengming Wang, Yang Zhou, Yuanhui Chen, Siyu Chen, Ruihong Wang
{"title":"Chloroplast genome characteristics and phylogenetic analysis of <i>Trevesia palmata</i> (Roxburgh ex Lindley) Visiani (Araliaceae).","authors":"Simin Chen, Chengming Wang, Yang Zhou, Yuanhui Chen, Siyu Chen, Ruihong Wang","doi":"10.1080/23802359.2026.2657101","DOIUrl":"https://doi.org/10.1080/23802359.2026.2657101","url":null,"abstract":"<p><p><i>Trevesia palmata</i> (Roxburgh ex Lindley) Visiani 1842 is a distinctive and visually striking plant species belonging to the family Araliaceae. Commonly known as the 'Snowflake Aralia' or 'Spider Leaf Tree', it is native to the subtropical and tropical regions of Southeast Asia. This study exhibits a complete chloroplast genome of <i>T. palmata</i>, alongside a phylogenetic analysis involving 23 additional species from Araliaceae. The chloroplast genome has a length of 156,541 bp and an overall GC content of 37.9%, which is structurally composed of a large single-copy (LSC) region (86,460 bp), a small single-copy (SSC) region (18,119 bp), and a pair of inverted repeat (IRs) regions (25,981 bp). At the gene level, this chloroplast genome harbors a total of 133 genes, comprising of 88 protein-coding genes, 37 tRNA genes and 8 rRNA genes. The phylogram showed that <i>T. palmata</i> shares a close evolutionary affinity with <i>Brassaiopsis</i> and <i>Eleutherococcus.</i> The chloroplast genome annotated and displayed below will lay a favorable foundation for the species relationship identification and evolutionary research of <i>Trevesia.</i></p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"619-624"},"PeriodicalIF":0.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13084832/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147723192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The complete mitogenome of <i>Calappa japonica</i> ortmann, 1892 (Decapoda: Calappidae) from the East China Sea.","authors":"Xing-Xing Zhao, Yi-Feng Fang","doi":"10.1080/23802359.2026.2657107","DOIUrl":"https://doi.org/10.1080/23802359.2026.2657107","url":null,"abstract":"<p><p>This study presents the first complete mitochondrial genome of <i>Calappa japonica</i> Ortmann, 1892, the fourth genetic resource for the family Calappidae. Its mitogenome (GenBank: PX866701) is 15,773 bp in length and comprises 13 protein-coding genes (PCGs), two rRNA genes, 22 tRNA genes, and one control region (D-loop). Nucleotide composition analysis showed a high AT content (69.3%), with adenine (34.5%) and thymine (34.8%) dominating. Phylogenetic analysis grouped <i>C. japonica</i> with <i>C. granulata</i> and <i>C. rissoana</i> in a monophyletic clade, with <i>C. bilineata</i> as the sister to this clade. This work provides mitochondrial genomic resources for future studies on Calappidae systematics and species identification.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"11 5","pages":"609-613"},"PeriodicalIF":0.7,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13072686/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147691094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}