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Complete mitochondrial genome of Mukaria splendida Distant (Hemiptera: Cicadellidae: Deltocephalinae: Mukariini) and phylogenetic analysis.

ABSTRACT: The complete mitochondrial genome (mitogenome) of Mukaria splendida Distant, 1908 (Hemiptera: Cicadellidae: Deltocephalinae) was first reported in Mukariini. The length of this mitogenome is 16,711 bp, which has an A + T content of 79% (A = 44.5%, T = 34.5%, G = 8.8%, C = 12.2%). A total of 37 genes were annotated [13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNA), and 2 ribosomal RNA genes (rRNA)]. Among the 37 genes, 4 protein coding genes (ND1, ND4, ND4L, ND5), 8 tRNA genes (trnQ, trnC, trnY, trnF, trnH, trnP, trnL2, trnV), and 2 rRNA (12S rRNA, 16S rRNA) were encoded by N chain, and the remaining genes were encoded by J chain. Overall, there were 14 gene overlaps and 9 gene gaps in the mitochondrial genome of this species. All PCGs were started with ATD (ATA/ATT/ATG), and stopped with TAR, except ATP6, which ends with single T. The phylogenetic analysis confirms that M. splendida clustered with other Deltocephalinae species.

SUBMITTER: Yang HY

PROVIDER: S-EPMC7894459 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundThe phylogenetic position and classification of Athysanini are poorly defined, as it includes a large group of polyphyletic genera that have historically been assigned to it mainly because they still exhibit the most typical deltocephaline genitalic and external body characters but lack the distinctive characteristics that other tribes possess. The bamboo-feeding leafhopper genus Abrus belong to the tribe Athysanini of subfamily Deltocephalinae, which currently comprises 19 valid described species, and are limited to the Oriental and Palaearctic regions in China. Although the taxonomy of Abrus are well updated, the references on comparative mitogenomic analyses of Abrus species are only known for a single species. In this study, we sequenced and analyzed the complete mitochondrial genomes (mitogenomes) of Abrus daozhenensis Chen, Yang & Li, 2012 (16,391bp) and A. yunshanensis Chen, Yang & Li, 2012 (15,768bp) (Athysanini), and compared with published mitogenome sequence of A. expansivus Xing & Li, 2014 (15,904bp).ResultsThese Abrus species shared highly conserved mitogenomes with similar gene order to that of the putative ancestral insect with 37 typical genes and a non-coding A + T-rich region. The nucleotide composition of these genomes is highly biased toward A + T nucleotides (76.2%, 76.3%, and 74.7%), AT-skews (0.091 to 0.095, and 0.095), negative GC-skews (- 0.138, - 0.161, and - 0.138), and codon usage. All 22 tRNA genes had typical cloverleaf secondary structures, except for trnS1 (AGN) which lacks the dihydrouridine arm, and distinctively trnG in the mitogenome of A. expansivus lacks the TψC arm. Phylogenetic analyses based on 13 PCGs, 2 rRNA genes, and 22 tRNA genes consistently recovered the monophyletic Opsiini, Penthimiini, Selenocephalini, Scaphoideini, and Athysanini (except Watanabella graminea, previously sequenced species as Chlorotettix nigromaculatus) based on limited available mitogenome sequence data of 37 species.ConclusionAt present, Abrus belongs to the tribe Athysanini based on both morphological and molecular datasets, which is strongly supported in present phylogenetic analyses in both BI and ML methods using the six concatenated datasets: amino acid sequences and nucleotides from different combinations of protein-coding genes (PCGs), ribosomal RNA (rRNAs), and transfer RNA (tRNAs). Phylogenetic trees reconstructed herein based on the BI and ML analyses consistently recovered monophylitic Athysanini, except Watanabella graminea (Athysanini) in Opsiini with high support values.

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Complete mitochondrial genome of Mukaria splendida Distant (Hemiptera: Cicadellidae: Deltocephalinae: Mukariini) and phylogenetic analysis.

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