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Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (36): 119-129.doi: 10.11924/j.issn.1000-6850.casb2021-0146

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Cicadellidae in Some Areas of Xinjiang: Molecular Identification Based on mtDNA COI Gene

ZHANG Haiyan1,2(), CHEN Guanghui1,2, GULIZAR Abduklimu1,2, ZHANG Xiuying1,2, WANG Yutao1,2()   

  1. 1School of Life and Geographical Sciences, Kashi University, Kashi, Xinjiang 844000
    2Key Laboratory of Biological Resources and Ecology of Pamirs Plateau in Xinjiang Uygur Autonomous Region, Kashi, Xinjiang 844000
  • Received:2021-02-09 Revised:2021-05-13 Online:2021-12-25 Published:2022-02-15
  • Contact: WANG Yutao E-mail:865225679@qq.com;wangytgs@163.com

Abstract:

This research aims to identify Cicadellidae accurately and efficiently, overcome the deficiencies of traditional classification methods, and provide a basis for its effective prevention and control. The nymphs of four species and the adults of two species of Cicadellidae in Xinjiang were used as materials, based on mt DNA COI gene, the gene sequences of the six Cicadellidae samples were obtained by PCR amplification and sequencing. The results show that the A+T content of COI sequence of the six samples is higher than that of G+C, and the base shift of A/T is obvious, which is consistent with the characteristics of insect mt DNA base composition. The average interspecific distance among the six samples is 0.232, and the average intraspecific distance within samples A, B and E is 0.0031, which is in accordance with the ‘10 times threshold rule’. The sequence similarity between sample A, B, E and related Cicadellidae species in the database is higher than 99%, which is fit to the result of morphological classification. The positions of the six species are vivid and the classification is clear on the phylogenetic tree, they form an independent monophyly among the taxonomic levels. Six COI gene sequences obtained can be used as DNA barcodes for rapid identification of Cicadellidae, the gene sequences of the nymphs of the four species are reported for the first time.

Key words: Xinjiang, Cicadellidae, mt DNA COI gene, similarity, genetic distance, evolutionary relationship

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