Novel gene rearrangement pattern in the mitochondrial genomes of Torleya mikhaili and Cincticostella fusca (Ephemeroptera: Ephemerellidae)
Novel gene rearrangement pattern in the mitochondrial genomes of Torleya mikhaili and Cincticostella fusca (Ephemeroptera: Ephemerellidae)
复制标题
DOI：
10.1016/j.ijbiomac.2020.10.124
复制
发表时间：
2020-12-15
影响因子：
8.2
通讯作者：
Zhou, Changfa
中科院分区：
文献类型：
--
作者：
Li, Ran;Zhang, Wei;Zhou, Changfa
蜉蝣科蜉蝣科（昆虫纲：蜉蝣目）分布于世界各地，具有很高的物种多样性。然而，其有丝分裂基因组的进化模式和系统发育关系在蜉蝣目昆虫中仍不清楚。本研究首次对米海利榧（Torleya mikhaili，15，042 bp）和棕褐小球藻（Atomicostella fusca，15，135 bp）的线粒体基因组进行了全序列测定和分析。两个ephemerellid有丝分裂基因组具有相似的基因结构，有37个典型基因以及一个假定的控制区。与已报道的蜉蝣有丝分裂基因组相比，这两个基因组具有独特的基因序列（I ′-CR-Q-M）。虽然观察到的重排模式是新的蜉蝣目有丝分裂基因组中，它可能被解释为串联复制随机丢失和重组的机制。系统发育分析使用贝叶斯推断（BI）和最大似然（ML）的方法的基础上，四个核苷酸数据集放置三个ephemerlid物种在一起。3个属的系统发育关系恢复为（（Ephemerella + Atomicostella）+ Torleya）。(C)2020 Elsevier B. V.保留所有权利。
The mayfly family Ephemerellidae (Insecta: Ephemeroptera) is distributed around the world and has very high species diversity. However, its evolution pattern of mitogenome and phylogenetic relationships within Ephemeroptera remain unclear. In this study, the complete mitochondrial genomes (mitogenomes) of Torleya mikhaili (15,042 bp) and Cincticostella fusca ( 15,135 bp) were firstly determined and analyzed. Two ephemerellid mitogenomes shared similar gene organization with 37 typical genes as well as a putative control region. Compared with other reported mitogenomes of mayflies, the unique gene order (I'-CR-Q-M) was found in these two mitogenomes. Although the observed rearrangement pattern is novel within ephemeropteran mitogenomes, it could be explained presumably by the mechanisms of tandem duplication-random loss and recombination. The phylogenetic analyses using both Bayesian inference (BI) and maximum likelihood (ML) methods based on four nucleotide datasets placed three ephemerellid species together. Furthermore, the phylogenetic relationships of the three genera were recovered as ((Ephemerella + Cincticostella) + Torleya). (C) 2020 Elsevier B.V. All rights reserved.