浙江农业科学 ›› 2026, Vol. 67 ›› Issue (9): 2265-2269.DOI: 10.16178/j.issn.0528-9017.20250824

• 植保技术 • 上一篇    下一篇

西瓜传染性软腐病病毒1的鉴定

王浩然1,2(), 王宇聪1, 肖鸣3, 明珂4, 吴会杰5, 冯国忠1()   

  1. 1.中国水稻研究所,水稻生物育种全国重点实验室,浙江 杭州 310006
    2.襄阳市农业科学院,湖北 襄阳 441000
    3.浙江省植保检疫与农药管理总站,浙江 杭州 310020
    4.台州市农业生态保护与质量安全中心,浙江 台州 318000
    5.中国农业科学院 郑州果树研究所,河南省果树瓜类生物学重点实验室,河南 郑州 450009
  • 收稿日期:2025-11-10 出版日期:2026-09-11 发布日期:2026-09-24
  • 通讯作者: 冯国忠
  • 作者简介:冯国忠,E-mail:fengguozhong@caas.cn。
    王浩然,研究方向为农产品质量检验。E-mail:wanghaoran_12@163.com。
  • 基金资助:
    浙江省“三农九方”科技协作计划项目(2024SNJF072)

Identification of Watermelon iflavirus 1(WIV1)

WANG Haoran1,2(), WANG Yucong1, XIAO Ming3, MING Ke4, WU Huijie5, FENG Guozhong1()   

  1. 1.National Key Laboratory of Rice Biological Breeding,China National Rice Research Institute,Hangzhou 310006,Zhejiang
    2.Xiangyang Academy of Agricultural Sciences,Xiangyang 441000,Hubei
    3.Zhejiang Provincial General Station for Plant Protection & Quarantine and Pesticide Management,Hangzhou 310020,Zhejiang
    4.Taizhou Agricultural Ecological Protection and Quality Safety Center,Taizhou 318000,Zhejiang
    5.Zhengzhou Fruit Research Institute,Chinese Academy of Agricultural Sciences,Zhengzhou 450009,Henan
  • Received:2025-11-10 Online:2026-09-11 Published:2026-09-24
  • Contact: FENG Guozhong

摘要:

本研究旨在鉴定浙江省西瓜种植园中表现典型病毒病症状(包括叶脉扭曲皱缩、叶面凹凸不平及向下卷曲等)的植株样本的病原类型。通过对病叶样本进行总RNA提取及宏转录组测序,经序列拼接与比对,鉴定出1个属于传染性软腐病病毒科(Iflaviridae)的新病毒,命名为Watermelon iflavirus 1(WIV1)。随后,通过RT-PCR结合DNA测序验证,结果显示,在10份病叶样本中有7份检测到该病毒的特异性序列,阳性检出率为70%。进一步的基因组注释结果显示,WIV1编码1个单一开放阅读框,推测编码的多聚蛋白与Iflaviridae成员的多聚蛋白在氨基酸序列上具有较高同源性,符合典型传染性软化病病毒属(Iflavirus)病毒的特征。本研究首次报道了WIV1对我国西瓜植株的侵染,为该病毒病的病原鉴定、发生机制研究及综合防控策略的制定提供了理论依据。

关键词: 西瓜, 病毒, 西瓜传染性软腐病病毒1, 病毒病

Abstract:

This study aimed to identify the pathogen responsible for typical viral disease symptoms observed in watermelon plants in Zhejiang Province,including vein distortion,leaf crumpling,and downward curling. Total RNA extracted from symptomatic leaves was subjected to meta-transcriptomic sequencing. Through sequence assembly and alignment,a novel virus species belonging to the family Iflaviridae was identified and named Watermelon iflavirus 1(WIV1). Subsequent RT-PCR and DNA sequencing validation detected specific sequences of this virus in 7 out of 10 diseased leaf samples,yielding a positive detection rate of 70%. Further genomic annotation revealed that WIV1 encoded a single open reading frame,and the putative polyprotein shared high amino acid sequence homology with polyproteins of known members in the family Iflaviridae,consistent with the characteristics of typical Iflavirus. For the first time,this study reports the infection of watermelon plants in China by WIV1,providing a theoretical basis for pathogen identification,pathogenesis research,and the development of integrated control strategies for this viral disease.

Key words: watermelon, virus, Watermelon iflavirus 1(WIV1), viral disease

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