In this study, the complete mitochondrial genome sequences of Iksookimia hugowolfeldi, Korean loach species, was determined using next-generation sequencing analysis. The complete mitogenome of I. hugowolfeldi has 16,634 bp in length and consists of 13 protein-coding genes (PCGs), 22 tRNAs, two rRNAs, and one control region (D-loop). Both gene orders and characteristics were exactly accord with mitochondrial genome of other species those belong to the family Cobitidae. Phylogenetic analysis revealed that the establishment of taxonomic relationship between Iksookimia and Cobitis has still uncompleted because of the not distinguished as monophyletic status.The complete mitochondrial genome sequence of Acentrogobius pflaumii was sequenced. It was 16,515-nucleotide in length and consisted of 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and two non-coding regions (L-strand replication origin and control region), showing conserved gene arrangement with most vertebrates. The phylogenetic analysis based on complete mitochondrial genome of A. pflaumii as well as other Gobiiformes species showed that A. pflaumii had close relationships with Amoya chusanensis. This study will provide useful genetic informatin for future phylogenetic and taxonomic classification of gobiiformes.In this study, we determined the complete mitochondrial genome sequences of cyprinid freshwater fish, Microphysogobio jeoni, belonging to the subfamily Gobioninae in the order Cypriniformes. The complete mitogenome of M. jeoni was 16,602 bp in length and consisted of 13 protein-coding genes (PCGs), 22 tRNAs, and two rRNAs. The gene order was identical with other Microphysogobio species. The overall nucleotide composition of M. jeoni was A + T 56.1% and G + C 43.9%, with slightly AT bias. In the phylogenetic tree, M. jeoni and other congeneric species clearly formed a monophyletic clade, and each species distinguished against each other well.The deep-water redfish, Actinopyga echinites, is an ecologically and economically important holothuroid in China due to its valuable nutrition and pharmacological compounds. However, the taxonomy and phylogeny of the Actinopyga have been debated and misidentifications have been reported recently. Moreover, there remain considerable doubts about cryptic species complex within Actinopyga. In this study, we report the first complete mitochondrial genome of Actinopyga from A. echinites. The mitogenome has 15,619 base pairs (62.9% A + T content) and made up of a total of 37 genes (13 protein-coding, 22 transfer RNAs, and 2 ribosomal RNAs), and a putative control region. This study was the first available complete mitogenome of Actinopyga and will provide useful genetic information for future phylogenetic and taxonomic classification of Holothuriidae.In this study, we report the sequence of the mitochondrial genome (mitogenome) of the crinoid echinoderm, Florometra species (Echinodermata, Crinoidea). The complete mitogenome of Florometra sp. was 15,792 base pairs long and was composed of 13 protein-coding genes (PCGs), two ribosomal RNA (rRNA) genes, 22 transfer RNA (tRNA) genes, and three regions of unassigned sequence (UAS) including one putative control region. Unique nucleotide composition, a clear positive bias for T with an apparent loss of C in PCGs as observed in the Crinoidea mitogenomes, was also seen in the Florometra sp. mitogenome (45% T, 12% C). Phylogenetic analysis with the concatenated nucleotide sequences of entire PCGs of echinoderms confirmed that Florometra sp. is highly related to F. serratissima within the family Crinoidea.To date, only five species are registered in the genus Hediste, and complete mitochondrial genome is reported in one species, Hediste diadroma. In this study, a complete 15,783 bp genome for the marine polychaete H. japonica mitochondrion was assembled through Illumina HiSeq platform. The complete mitochondrial genome of H. japonica contained 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, and one control region. Overall genomic structure and gene orientation of H. japonica mitogenome are identical to those of H. diadroma. Phylogenetic analysis using the maximum likelihood method validated the sister relationship between Hediste sp. and other polychaetes. This information will be useful to understand geographical distribution, phylogenetic relationship, and evolutionary history of marine polychates.Amomum tsao-ko (Zingiberaceae) is an important edible and medicinal crop. The complete chloroplast (cp) genome of A. tsao-ko was determined using Illumina sequencing platform. The size of whole cp genome was 163,648 bp, containing a small single copy (SSC) region of 15,355 bp and a large single copy (LSC) region of 88,741 bp, which were separated by a pair of inverted repeat (IRs) regions (29,776 bp). The A. tsao-ko cp genome contained 133 genes, including eight ribosomal RNA genes (4 rRNA species), 38 transfer RNA genes (30 tRNA species) and 87 protein-coding genes (79 PCG species). The overall GC content of A. tsao-ko cp genome is 36.02%. To investigate the evolution status of A. tsao-ko, as well as Zingiberales, a phylogenetic tree with A. tsao-ko and other 16 species was constructed based on their complete chloroplast genomes. Phylogenetic analysis revealed that A. tsao-ko was closely related to Alpinia zerumbet.The plastid genome (plastome) of the endemic Chinese medicinal herb Paeonia obovata subsp. Willmottiae (Paeoniaceae) was sequenced and investigated in this study. The complete plastome is 152,713 bp in length with the typical quadripartite structure, which consists of a large single-copy region (LSC, 84,419 bp), a small single-copy region (SSC, 16,982 bp), and a pair of inverted repeat regions (IRs, 25,656 bp).  https://www.selleckchem.com/JAK.html  The overall GC content is 33.2%, and the IR regions are more GC rich (43.2%) than the LSC (36.7%) and SSC (32.8%) regions. A total of 114 unique genes, including 79 protein-coding genes, 31 tRNAs, and four rRNAs were identified. Phylogenetic reconstruction based on complete plastome sequences demonstrated that P. obovata subsp. Willmottiae is phylogenetically closest to P. obovata.