Department of Plant Protection, Henan Institute of Science and Technology, Xinxiang 453003, Henan, China.
Int J Mol Sci. 2018 Feb 28;19(3):680. doi: 10.3390/ijms19030680.
Stoneflies comprise an ancient group of insects, but the phylogenetic position of Plecoptera and phylogenetic relations within Plecoptera have long been controversial, and more molecular data is required to reconstruct precise phylogeny. Herein, we present the complete mitogenome of a stonefly, , which is 16146 bp in length and consists of 13 protein-coding genes (PCGs), 2 ribosomal RNAs (rRNAs), 22 transfer RNAs (tRNAs) and a control region (CR). Most PCGs initiate with the standard start codon ATN. However, and started with GTG and TTG. Typical termination codons TAA and TAG were found in eleven PCGs, and the remaining two PCGs ( and ) have incomplete termination codons. All transfer RNA genes (tRNAs) have the classic cloverleaf secondary structures, with the exception of , which lacks the dihydrouridine (DHU) arm. Secondary structures of the two ribosomal RNAs were shown referring to previous models. A large tandem repeat region, two potential stem-loop (SL) structures, Poly N structure (2 poly-A, 1 poly-T and 1 poly-C), and four conserved sequence blocks (CSBs) were detected in the control region. Finally, both maximum likelihood (ML) and Bayesian inference (BI) analyses suggested that the Capniidae was monophyletic, and the other five stonefly families form a monophyletic group. In this study, was closely related to , and Chloroperlidae and Perlidae were herein supported to be a sister group.
石蛉目是一个古老的昆虫类群,但石蛉目昆虫的系统发育位置和系统发育关系长期以来一直存在争议,需要更多的分子数据来重建精确的系统发育。本文报道了 1 种石蛉目昆虫的完整线粒体基因组,命名为 ,其基因组全长为 16146bp,由 13 个蛋白编码基因(PCGs)、2 个核糖体 RNA(rRNA)、22 个转移 RNA(tRNA)和 1 个控制区(CR)组成。大多数 PCGs 以标准起始密码子 ATN 起始,而 和 以 GTG 和 TTG 起始。11 个 PCGs 具有典型的终止密码子 TAA 和 TAG,另外两个 PCGs( 和 )具有不完整的终止密码子。所有 tRNA 基因(tRNA)均具有典型的三叶草二级结构,除 外,其不具有二氢尿嘧啶(DHU)臂。参照先前的模型显示了两个 rRNA 的二级结构。在控制区检测到 1 个大串联重复区、2 个潜在的茎环(SL)结构、1 个 Poly N 结构(2 个 poly-A、1 个 poly-T 和 1 个 poly-C)和 4 个保守序列块(CSBs)。最大似然法(ML)和贝叶斯推断(BI)分析均表明,Capniidae 是单系的,而其他 5 个石蛉科形成了一个单系群。在本研究中, 与 关系密切,而 Chloroperlidae 和 Perlidae 被支持为姐妹群。