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Scientia Silvae Sinicae ›› 2019, Vol. 55 ›› Issue (12): 162-172.doi: 10.11707/j.1001-7488.20191217

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Sequencing and Analysis of the Complete Mitochondrial Genome of Dendrolimus punctatus (Lepidoptera: Lasiocampidae)

Huicong Du1,Yao Wang2,Jiaxing Fang1,Zhenyin Zhang3,Sufang Zhang1,Fu Liu1,Zhen Zhang1,Xiangbo Kong1,*   

  1. 1. Research Institute of Forest Ecology, Environment and Protection, CAF Key Laboratory of Forest Protection of National Forestry and Grassland Administration of China Beijing 100091
    2. School of Forestry, Northeast Forestry University Harbin 150040
    3. Forestry Bureau of Yulong Naxi Autonomous County, Yunnan Province Lijiang 674100
  • Received:2019-01-11 Online:2019-12-25 Published:2020-01-02
  • Contact: Xiangbo Kong
  • Supported by:
    国家自然科学基金项目(31470654)

Abstract:

Objectve: In this study, we sequenced the mitochondrial genome of Dendrolimus punctatus, and analyzed the mitochondrial genome characteristics and the higher-level phylogenetic relationships in moths of Lepidoptera. Method: The complete genome sequence of the mitochondrial genome of D. punctatus was determined by Hiseq X Ten sequencer. The genes were located and annotated based on the known complete mitochondrial genomes of Lepidopteran species. The tRNA Scan-SE 2.0 was used to predict the secondary structure of the tRNA genes online. Based on the whole nucleotide sequence of mitochondrial genome, the phylogenetic relationships of 50 insect species from 11 families of Lepidoptera were reconstructed. Result: The results showed that the complete mitochondrial genome of D. punctatus was a circular molecule of 15 417 bp, including 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and one control region without gene rearrangement. Among the 13 protein-coding genes, amino acids of Phe, Leu, Ile, Tyr, and Asn (Count>290) were used more frequently, while Ala and Arg were uesd less frequently (Count < 50). In the use of its codon, except CGA as the starting codon of COI gene, the starting codons of the other genes were all typical ATN (ATA, ATT, ATG). The stop codon of COICOII and ND4 was T, while that of the other genes was TAA. All tRNAs showed the classic clover-leaf structure, except that the dihydrouridine (DHU) arm of tRNASer(AGN) formed a simple loop. The (A+T)-rich region contained some conserved structure including the motif ATAGAA, 14 bp ploy (T) stretch and two repeating units with a length of 13 bp and one (AT)7 structure. The complete mitochondrial genome sequence and the nucleotide sequence of 13 protein-coding genes of D. punctatus were compared with other species of Dendrolimus genus, and the results showed that there was high homology between D.punctatus, D.wenshanensis, and D.tabulaeformis. Phylogenetic tree results show that D. punctatus is closely related with D. tabulaeformis, and D. spectabilis is closely related with D. kikuchii. Conclusion: The mitochondrial genes structure of D. punctatus are stable, the phylogenetic relationship of some species from Lepidoptera based on mitochondrial genome is consistent with the traditional morphological classification.

Key words: Lepidoptera, Lasiocampidae, Dendrolimus punctatus, mitochondrial genome, phylogeny

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