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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (8): 1793-1802.doi: 10.16420/j.issn.0513-353x.2022-0543

• Plant Protection • Previous Articles     Next Articles

Identification of Virus Disease Types of Melon Planting in Jiashi County of Xinjiang

WANG Dong*(), MAIMAITIAIZEZI · Muhetaer, LIU Yanquan, DILIDAERKEZI · Wulamu   

  1. Key Laboratory of Biological Resources and Ecology of Pamirs Plateau in Xinjiang Uygur Autonomous Region,College of Life and Geographic Sciences,Kashi University,Kashi,Xinjiang 844000,China
  • Received:2023-02-07 Revised:2023-07-15 Online:2023-08-25 Published:2023-08-23
  • Contact: WANG Dong

Abstract:

In 2019 and 2021,12 towns in Jiashi county of Xinjiang were investigated and sampled for muskmelon(Jiashi-melon)virus disease. Watermelon mosaic virus(WMV),cucumber mosaic virus(CMV),zucchini yellow mosaic virus(ZYMV),cucumber green mottle mosaic virus(CGMMV),cucurbit aphid-borne yellows virus(CABYV),and melon aphid-borne yellows virus(MABYV)were identified by two-step RT-PCR protocol. In addition,the genome of WMV isolates was analyzed. The results showed that the virus disease is more common in the Jiashi-melon planting towns in Jiashi County. Symptoms include mosaic,blister mosaic,blister mosaic and malformation,leaf necrosis,leaf chlorosis,and fruit malformation. A total of 37 samples were collected,and the detection of WMV,CMV,and ZYMV was positive,but CGMMV,CABYV,and MABYV were not detected. 21.6%(8/37)of the samples were positive. WMV was the most prevalent virus detected in 18.9%(7/37)of the 37 samples collected,followed by CMV and ZYMV. Multiple infections were more frequent than single infections. F2/R2(P1 + HC-Pro),F4/R4(P3 + 6K1 + CI),F5/R5(CI + 6K2 + NIa-VPg),F6/R6(6K2 + NIa-VPg + NIa-Pro + NIb),and F8/R8(CP + 3′-UTR)fragments of different WMV isolates infecting Jiashi-melon have certain differences in the branches of the evolutionary tree,indicating that there may be recombination in the WMV genome.

Key words: melon, virus identification, genome analysis, watermelon mosaic virus