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- 저자 : Mingsheng Yang (검색결과 2 건)
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Mingsheng Yang,Hongfei Zhang,Lu Song,Yuxia Shi,Xiaomeng Liu 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.2
The complete mitochondrial genome (mitogenome) of Mahanta tanyae was sequenced and extensively compared with all seven additionally reported zygaenoid mitogenomes. The M. tanyae mitogenome is circular, doublestranded, and 15,323 bp long. Gene content, gene order, and orientation are all typical of Lepidoptera, despite the existence of gene rearrangements for some other zygaenoid mitogenomes. Comparative analyses further showed that the incomplete termination codon T is consistently recognized in the mitochondrial cox1, cox2 and nad4 genes of all zygaenoid species, as well as in the nad5 gene in two limacodid species. Among 13 proteincoding genes, nad6 exhibits the highest evolutionary rate. The structure for each tRNA is highly conserved, including loss of the dihydorouidine (DHU) arm in trnS1 (AGN), but remarkable nucleotide variation exists, primarily in the pseudouridine (TψC) loops. Interestingly, in four species of Zygaenidae, the anticodons for trnS1 (AGN) are consistently UCU, instead of the routinely used codon GCU, in all three species of Limacodidae. In the intergenic region between trnS2 and nad1, a short sequence before the motif “ATACTAA” is present in the M. tanyae mitogenome that is unique among reported zygaenoid mitogenomes. In the A + T-rich region between the motif “ATTTA” and the microsatellite (AT) n element, some nucleotides were present for most zygaenoid mitogenomes, which is, to our knowledge, rare even in reported lepidopteran mitogenomes. Phylogenetic analyses based on the combined 37 mitochondrial genes confirmed the position of M. tanyae in Limacodidae of the Zygaenoidea.
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Song Lu,Shi Yuxia,Zhang Hongfei,Wang Zhengbing,Liu Xiaomeng,Yang Mingsheng 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.2
The mitochondrial genome (mitogenome) has been extensively used in phylogenetics and species-level evolu tionary investigations. The lepidopteran family Tortricidae (leaf-roller moths), including the genus Grapholita, contains numerous species of economic importance, but for the majority of Grapholita species, their mitogenomes remain poorly studied. Here, we sequence and annotate the full mitogenome of Grapholita delineana, an important pest of hemp worldwide and compare it with the mitogenomes of two congeneric species available from GenBank. The G. delineana mitogenome is 15,599 bp long, including 37 typical mitochondrial genes and an A + T-rich region. Gene content, order and orientation are identical to other reported tortricid mitogenomes. Analyses of nucleotide diversity, Ka/Ks, genetic distance and number of variable sites together suggest that nad6 is the fastest-evolving gene among the mitochondrial PCGs of Grapholita. Our analyses indicate that Grapholita, as presently defined, is not monophyletic, confirming previous morphological and multiple-gene studies, using mitogenomic evidence. Our study provides information on comparative mitogenomics of Tortricidae especially Grapholita.
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