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Internalization and dissemination of human norovirus and Tulane virus in fresh produce is plant dependent

机译：人类诺如病毒和杜兰病毒在新鲜农产品中的内在化和传播取决于植物

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摘要

Human norovirus (NoV) is a leading cause of fresh produce associated outbreaks. Previous research indicates that the roots of growing leafy greens and berries internalize human NoV. However the effect of plant type and inoculum level on internalization rates has not been directly compared. In this study we compared the internalization and dissemination rates of human NoV and its surrogate, Tulane virus (TV) in green onion, radishes, and Romaine lettuce. We also evaluated the effect inoculum level and plant growth matrix on the rate of viral internalization. In the hydroponic growth system, we detected internalization and dissemination of human NoV RNA in green onions. In hydroponically growing green onions inoculated with high titer TV, we found higher rates of internalization and dissemination compared to green onions inoculated with low titer TV. In soil growth systems, no infectious TV was detected in either green onion or radishes. However, in Romaine lettuce plants grown in soil approximately 4 log_(10) PFU/g was recovered from all tissues on day 14 p.i. Overall, we found that the type of plant, growth matrix, and the inoculum level influences the internalization and dissemination of human NoV and TV.
机译：人诺如病毒（NoV）是与农产品相关的新鲜疾病暴发的主要原因。先前的研究表明，生长着绿叶蔬菜和浆果的根部将人类NoV内部化。但是，尚未直接比较植物类型和接种量对内化率的影响。在这项研究中，我们比较了人类NoV及其替代物杜兰病毒（TV）在大葱，萝卜和长叶莴苣中的内在化和传播速率。我们还评估了接种量和植物生长基质对病毒内在化速率的影响。在水培生长系统中，我们检测到了人类NoV RNA在洋葱中的内在化和分布。在高滴度电视接种的水培生长大葱中，与低滴度电视接种的葱相比，我们发现内化和传播速率更高。在土壤生长系统中，未在大葱或萝卜中检测到传染性电视。但是，在土壤中生长的长叶莴苣植物中，在p.i第14天从所有组织中回收到大约4 log_（10）PFU / g。总体而言，我们发现植物的类型，生长基质和接种量会影响人类NoV和TV的内在化和传播。

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  • 来源
    《Food microbiology》 |2018年第2期|25-32|共8页
  • 作者

    Yang Zhihong; Chambers Heather; DiCaprio Erin; Gao Gary; Li Jianrong;

  • 作者单位

    Department of Biology, College of Life Science, Huzhou University, Huzhou, Zhejiang, China;

    Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, United States;

    Department of Food Science and Technology, College of Agriculture and Environmental Sciences, University of California-Davis, Davis, CA, United States;

    Department of Extension, College of Food, Agriculture, and Environmental Sciences, The Ohio State University, Columbus, OH, United States,South Centers, The Ohio State University, Piketon, OH, United States;

    Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fresh produce; Green onion; Human norovirus; Internalization; Radish; Tulane virus;

    机译：新鲜农产品;葱;人诺如病毒;内部化;萝卜;杜兰病毒;

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