Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (6): 1368-1374.DOI: 10.3969/j.issn.1004-1524.2023.06.14

• Plant Protection • Previous Articles     Next Articles

Cloning and identification of Pepper cryptic virus 2 in Qinghai Province, China

LUO Hailin(), YUAN Lei, YAN Jiahui*(), GUO Qingyun   

  1. Key Laboratory of Agricultural Integrated Pest Management of Qinghai Province, Scientific Observing and Experimental Station of Crop Pest in Xining, Ministry of Agriculture and Rural Affairs, Academy of Agriculture and Forestry Sciences, Qinghai University, Xining 810016, China
  • Received:2022-05-12 Online:2023-06-25 Published:2023-07-04

Abstract:

Pepper cryptic virus 2 is one of the new viruses in pepper. It often infects with other viruses, seriously reducing the yield and quality of pepper. In 2021, suspected pepper’s leaf samples were collected from Haidong, Qinghai. Two dsRNA complete gene sequences of PCV2 were obtained by using RT-PCR and gene cloning. The two-length sequence of Qinghai isolates were 1 579 bp and 1 435 bp. The nucleotide sequence identities against other Pepper cryptic virus 2 isolates were over 95%. Phylogenetic analysis showed that PCV2 Qinghai isolate clustered with Chiltepin53 in a sub-clade. All these results showed that the virus infected pepper was an isolate of PCV2. Analyzing the nucleotide sequence of PCV2-QH and PCV2-XJ, the results showed that there were multiple differences. This is the first report of PCV2 infecting pepper in Qinghai.

Key words: pepper, Pepper cryptic virus 2, complete gene sequence, sequence analysis

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