Find in Library

Long non-coding regions (NCRs) and gene rearrangements are commonly seen in mitochondrial genomes of Mantodea and are primarily focused on three regions: <i>CR-I-Q-M-ND2</i>, <i>COX2-K-D-ATP8,</i> and <i>ND3-A-R-N-S-E-F-ND5</i>. In this study, eight complete and one nearly complete mitochondrial genomes of praying mantises were acquired for the purpose of discussing mitochondrial gene rearrangements and phylogenetic relationships within Mantodea, primarily in the newly established families Haaniidae and Gonypetidae. Except for <i>Heterochaeta</i> sp. JZ-2017, novel mitochondrial gene arrangements were detected in <i>Cheddikulama straminea</i>, <i>Sinomiopteryx graham</i>, <i>Pseudovates chlorophaea</i>, <i>Spilomantis occipitalis</i>. Of note is the fact that one type of novel arrangement was detected for the first time in the <i>Cyt b-S2-ND1</i> region. This could be reliably explained by the tandem replication-random loss (TDRL) model. The long NCR between <i>trnT</i> and <i>trnP</i> was generally found in Iridopteryginae and was similar to the <i>ND4L</i> or <i>ND6</i> gene. Combined with gene rearrangements and intergenic regions, the monophyly of Haaniidae was supported, whereas the paraphyly of Gonypetidae was recovered. Furthermore, several synapomorphies unique to some clades were detected that conserved block sequences between <i>trnI</i> and <i>trnQ</i> and gaps between <i>trnT</i> and <i>trnP</i> in Toxoderidae and Iridopteryginae, respectively.