时间分辨荧光免疫法快速诊断烟草花叶病毒

IF 1.7 3区农林科学 Q3 CHEMISTRY, APPLIED

Food and Agricultural Immunology Pub Date : 2023-03-18 DOI:10.1080/09540105.2023.2185568

Yuan Ji, Yushuang Guo, Huimin Deng, Jianfeng Zhang, Yuemao Wang, En Dai, Ziyan Fan, Gangling Tang, Meng-ao Jia, Bo Ding

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Rapid diagnosis of Tobacco mosaic virus in tobacco using time-resolved fluorescence immunoassay

ABSTRACT Tobacco mosaic virus (TMV) causes a significant yield loss in solanaceous crops. Accurate and rapid diagnosis of TMV is an essential pre-requisite for proactive and tailored disease management strategies, filling the gap between more rigorous laws regarding pesticide use and maintaining crop production. Herein, we developed a time-resolved fluorescence immunoassay (TRFIA) to quantitatively detect TMV in tobacco. TMV virions were used as immunogens to develop monoclonal antibodies, which were then conjugated to Eu3+ nanospheres. The detection limit of the TRFIA platform was 0.24 ng/mL, with recovery rates in the range of 90.71–108.11% in spiked tobacco. The specificity was confirmed using ten species of tobacco-infecting phytopathogens. In-field applicability was implemented by screening for TMV in 10,000 tobacco leaf samples collected from five fields in Kunming, China. Overall, the proposed TRFIA platform is rapid, accurate, and end-user friendly, demonstrating its application in TMV onsite testing in tobacco.

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来源期刊

Food and Agricultural Immunology 农林科学-毒理学

CiteScore

5.30

自引率

6.70%

发文量

审稿时长

2 months

期刊介绍： Food and Agricultural Immunology is an international open access journal publishing original immunological research with applications in food, agricultural, environmental and veterinary science. Submissions describing the use of immunological techniques and methods are particularly welcomed. The journal aims to expand our understanding of the interactions at the interface of food and immune systems including studies on: -Development of diagnostic systems – all types of ligand-based assays, e.g. antibody, aptamer -Application of ligand-based assays for the detection or identification of molecules of interest in food science, agricultural research, veterinary investigations and clinical systems relating to food allergy or sensitivity to agricultural chemicals -Effects of food on the immune system -Studies on allergy and allergic reactions -Investigations into food allergies -Development of allergen-free food systems -Development of novel assay formats -Applications of assay systems to the monitoring of food items in relation to safety and labelling -Food quality issues, e.g. speciation, adulteration and contamination -Comparisons between different analytical techniques The journal publishes research and review articles and is essential reading for food scientists, immunologists and all those concerned with the interaction between food and immune systems.