Characterizing the complete mitochondrial genome of Psephenothrips eriobotryae Dang&Qiao(Thysanoptera:Phlaeothripidae)with massive gene arrangement in Phlaeothripidae  

作　　者：Lihong Dang Chengwen Li Dongxue Wang Yuxin Gao Linpeng Zhao Bin Zhang 

机构地区：[1]School of Biological Science&Engineering,Shaanxi University of Technology,Hanzhong 723000,China [2]Engineering Research Center of Quality Improvement and Safety Control of Qinba Special Meat Products,Universities of Shaanxi Province,Hanzhong 723000,China [3]Shaanxi Changqing National Nature Reserve,Changqing Jiayuan,No.176,Hanzhong 723000,China [4]College of Life Sciences&Technology,Inner Mongolia Normal University,Hohhot 010022,China

出　　处：《Zoological Systematics》2024年第2期116-128,共13页动物分类学报（英文版）

基　　金：supported by the Natural Science Basic Research Program of Shaanxi Province(2023-JC-QN-0178);the National Natural Sciences Foundation of China(31702042,32260122);the Youth Innovation Team of Shaanxi University(2023-77);the Science and Technology Planning Project of Inner Mongolia Autonomous Region(2021GG0112);the Higher School Science and Technology Research Major Projects of the Inner Mongolia Autonomous Region(NJZZ22604)。

摘　　要：Each species within the order Thysanoptera has a distinct mitochondrial gene order displaying a high level of gene rearrangement,particularly massive in Phlaeothripidae.To understand the evolutionary patterns of rearrangement in this family,we sequenced the complete mitochondrial genome of Psephenothrips eriobotryae,a notable potential pest of loquat trees.Its mitogenome is a circular DNA molecule(15,413 bp in size)composed of 37 genes:13 PCGs,22 tRNAs,two rRNAs,and two putative control regions(CRs).By comparing with the ancestral mitogenome of arthropods,P.eriobotryae exhibits notable gene rearrangement variations.However,it shares four conserved gene blocks with three closely related species in Phlaeothripinae.In the phylogenetic tree,P.eriobotryae was clustered with these three leaffeeding Phlaeothripinae species.The presence of more similar conserved gene blocks probably indicates a strong correlation between gene rearrangements and the phylogeny within Phlaeothripidae.Furthermore,the mitogenome of P.eriobotryae shows some characteristics:(a)two putative CRs in which CR2 is the copy of partial CR1 with 99.62%sequence similarity,and CR1 consists of two 237 bp repeat unites;(b)high A+T content of 82.6%in overall base composition;(c)trn S1 lacking a complete dihydrouridine(DHU)arm;(d)the protein coding gene,atp8 started with TTG instead of the more common ATN,while nad3 terminated by TAG rather than TAA;(e)translocations and inversions observed in fifteen of the 37 genes.

关 键 词：Mitogenome structure phylogenetic relationships Liothrips-lineage repeat regions 

分 类 号：S436.67[农业科学—农业昆虫与害虫防治]