Complete mitochondrial genomes of Nanorana taihangnica and N. yunnanensis (Anura: Dicroglossidae) with novel gene arrangements and phylogenetic relationship of Dicroglossidae

Abstract

We found that the gene arrangements of N. taihangnica and N. yunnanensis differed from other published dicroglossid mt genomes. The gene arrangements in N. taihangnica and N. yunnanensis could be explained by the Tandem Duplication and Random Loss (TDRL) and the Dimer-Mitogenome and Non-Random Loss (DMNR) models, respectively. The invalidation of the genus Feirana is supported in this study.

Characterization of complete mitochondrial genome of Hylarana guentheri (Anura: Ranidae) and its phylogenetic implication

“…It has mainly distributed in Southeast Asia, Hong Kong, Macau, Taiwan, and Viet Nam (Lue et al 2009). Although the complete mitochondrial genome analyses have achieved rapid advancement and applied in an increasing number of organisms, its widespread application should not be ignored because it is a multipurpose source of genetic variation for evolutionary study and systematic taxonomic status (Mauro et al 2004;Huang et al 2016;Jimenez et al 2017;Zhang et al 2018). In recent years, an increasing number of studies have been conducted to expound the molecular phylogenetics in the Neobatrachia (Hahn et al 2013;Yuan et al 2016).…”

Exceptional Enlargement of the Mitochondrial Genome Results from Distinct Causes in Different Rain Frogs (Anura: Brevicipitidae: Breviceps)

“…The gene rearrangements in animal mt genomes are considered to reflect animal evolution (e.g., [23,[58][59][60]), and the rearranged gene orders found in this study can be regarded as novel phylogenetic markers for brevicipitid taxa. Specifically, the O L -trnsNW can be considered characteristic of some members of the B. mossambicus group [54], while the cytb-trnsHS-CR can be regarded as a synapomorphy of Breviceps.…”

Peer Review #1 of "The complete mitochondrial genome of Pyxicephalus adspersus: high gene rearrangement and phylogenetics of one of the world’s largest frogs (v0.2)"

“…Anuran mitochondrial (mt) genomes are closed double-stranded DNA molecules with the lengths varying from 15-23 kb (Kakehashi et al, 2013;Zhang et al, 2018a) and typically encode 37 genes: two ribosomal RNAs (12S and 16S rRNAs), 22 transfer RNAs (tRNAs), 13 protein-coding genes (PCGs), and the control region (CR) or D-loop region (Boore, 1999;Boore, 2000). The mt genome has several valuable characteristics that have led to its wide use as a research tool including limited recombination, maternal inheritance, rapid evolutionary rate, small size and relatively conserved gene arrangement (Avise, 1994).…”

“…To date, there are 7,977 known species of Anura (Frost, 2019) on Earth, the vast majority of which have not had their mt genomes sequenced and studied. According to Machado et al (Jacob Machado et al, 2018) and Zhang et al (2018a), there are partial mt genomes for over one hundred species representing 35 families (72 genera) and complete mt genomes for over two hundred species representing 27 families (76 genera) listed in GenBank. Although nonneobatrachian frogs show conservation of the typical mt gene organization, ranoid frogs belonging to the neobatrachia show a variety of gene rearrangements in their mt genomes Zhang et al, 2013).…”

“…Manuscript to be reviewed species compared to other species of Scapharca, had largest mitochondrial genomes among the genus Scapharca (Liu et al, 2013). A species with a giant size within an animal group may be associated with a larger mitogenome (Alam et al, 2010;Yu et al, 2012b;Yu et al, 2015;Zhang et al, 2018a;).However, no studies in P. adspersus has examined the potential involvement of mt genome evolution. So we wondered whether this giant bullfrog had novel features of its mt genome.…”