A Luminex xTAG-based assay for plant-infecting tospoviruses was developed. The test enables the detection of tospoviruses in general and the differentiation of the four important member species of this genus: Tomato spotted wilt virus, Impatiens necrotic spot virus, the proposed 'Capsicum chlorosis virus' and Watermelon silver mottle virus. The generic tospovirus primers used in this method are also applicable for detection of tospoviruses by basic RT-PCR. We also describe an economic alternative method for the distinction of the four tospoviruses mentioned and of additional member viruses, based on a restriction fragment length polymorphism (RFLP). The sophisticated Luminex xTAG technology allows the simultaneous detection of various targets. This study is part of a project that aims to develop a method for the simultaneous detection of various plant pathogens (viral, bacterial and fungal) in plant material.
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http://dx.doi.org/10.1007/s00705-017-3256-x | DOI Listing |
Sci Rep
September 2024
USDA - Agricultural Research Service, 1636 East Alisal Street, Salinas, CA, 93905, USA.
The plant virus, Impatiens necrotic spot virus (INSV), is an economically important pathogen of vegetables, fruits, and ornamental crops. INSV is vectored by the western flower thrips, Frankliniella occidentalis, a small insect pest that is globally distributed. In recent years, INSV outbreaks have reached epidemic levels in the Salinas Valley of California-an agriculturally rich region where most of the lettuce (Lactuca sativa) is produced in the United States.
View Article and Find Full Text PDFPlant Dis
September 2024
USDA ARS, 1636 East Alisal Street, Salinas, Salinas, California, United States, 93905-3097.
Impatiens necrotic spot virus (INSV; Order Bunyavirales, Family Tospoviridae) is transmitted by several thrips species and has emerged as an important pathogen of lettuce (Lactuca sativa) in several countries (Beris et al., 2020 and Hasegawa & Del Pozo-Valdivia, 2023). In 2023, a total of 22,092 hectares of lettuce were planted in Mexico, with a total production of 523,739 tons (Agri-Food and Fisheries Information Service, 2024).
View Article and Find Full Text PDFPLoS One
July 2024
Department of Plant Pathology, University of California Davis, Davis, California, United States of America.
Tomato spotted wilt orthotospovirus (TSWV) causes substantial economic loss to tomato production, and the Sw-5b resistance gene is widely deployed for management. Here, we show (i) the emergence of resistance-breaking (RB) TSWV strains in processing and fresh market tomato production in California over the past ten years, and (ii) evolutionary relationships with RB strains from other areas. A specific RT-PCR test was used to show the C118Y RB strain that emerged in Fresno County in 2016 quickly became predominant in the central production area and remained so through this study.
View Article and Find Full Text PDFPlant Dis
May 2024
University of Arkansas Fayetteville, 3341, Entomology and Plant Pathology, PTSC 217, Fayetteville, Arkansas, United States, 72701-4002.
Cucurbits (family Cucurbitaceae) includes globally important fruit and vegetable crops. Virus diseases pose a serious threat to cucurbits, limiting crop quality and yield (Regina et al. 2021).
View Article and Find Full Text PDFPlant Dis
January 2024
The University of Georgia, Department of Plant Pathology, 2360 Rainwater Rd, Tifton, Georgia, United States, 31793;
Tomatillo (Physalis philadelphica L.) is an annual plant native to Mexico and Guatemala, and cultivated in other tropical and subtropical regions. In October 2023, tomatillo plants with interveinal yellowing of leaves, marginal chlorosis, leaf thickening, and leaf rolling symptoms (Figure 1) were observed at Colquitt and Tift County, Georgia, US.
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