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Soybean (Glycine max L.) is one of the most important crops globally, serving as a primary source of protein and oil for human consumption, animal feed, and industrial applications. The United States, Brazil, Argentina, China, and India are the world's leading soybean producers, with the crop covering millions of hectares annually. However, soybean production is constantly threatened by a range of viral diseases, which can cause yield losses ranging from 10 to 100 percent depending on the virus, cultivar susceptibility, and timing of infection. Unlike fungal or bacterial pathogens, viruses cannot be controlled by curative treatments. Rapid and accurate detection is therefore the foundation of effective disease management. Among the various diagnostic tools available, ELISA (Enzyme-Linked Immunosorbent Assay) remains the gold standard for routine virus testing in soybean.
Figure 1.Soybean Viruses: From Pathogen Biology to ELISA Detection.
Soybean is susceptible to more than 70 viruses globally, but a relatively small number account for the majority of economic damage. The most economically significant soybean viruses include Soybean mosaic virus (SMV), Soybean dwarf virus (SbDV), Soybean vein necrosis virus (SVNV), Bean pod mottle virus (BPMV), Cowpea chlorotic mottle virus (CCMV), Alfalfa mosaic virus (AMV), and Tobacco ringspot virus (TRSV). Each of these pathogens exhibits unique biological properties, transmission modes, and symptom profiles.
| Major Viruses Affecting Soybean Crops | Details |
| Soybean mosaic virus (SMV) | Soybean mosaic virus (SMV) is a potyvirus (genus Potyvirus, family Potyviridae) and is considered one of the most widespread and economically damaging viruses affecting soybean worldwide. SMV is transmitted non-persistently by more than 30 aphid species, including the soybean aphid (Aphis glycines), green peach aphid (Myzus persicae), and cotton aphid (Aphis gossypii). The virus is also seed-transmitted at rates ranging from 0 to 10 percent depending on the soybean cultivar and virus strain. |
| Soybean dwarf virus (SbDV) | Soybean dwarf virus (SbDV) is a luteovirus (genus Luteovirus, family Luteoviridae) that causes significant disease in soybean, particularly in Japan, Korea, China, and other parts of Asia. The virus is transmitted persistently by several aphid species, primarily the soybean aphid (Aphis glycines) and the pea aphid (Acyrthosiphon pisum). In persistent transmission, aphids require feeding times of hours to days to acquire the virus, and once acquired, they remain infectious for life. SbDV is not seed-transmitted, but it can overwinter in perennial legume hosts such as clover and alfalfa. |
| Soybean vein necrosis virus (SVNV) | Soybean vein necrosis virus (SVNV) is a relatively recently described virus belonging to the genus Orthotospovirus (family Tospoviridae). First reported in Tennessee in 2008, SVNV has since spread throughout much of the soybean-producing regions of the United States and has also been detected in Canada, Argentina, and other countries. The virus is transmitted persistently by several species of thrips, most notably the tobacco thrips (Frankliniella fusca) and the western flower thrips (Frankliniella occidentalis). |
Understanding the biology and transmission ecology of soybean viruses is essential for developing effective management strategies. SMV, as a non-persistently transmitted potyvirus, is acquired and transmitted by aphids within seconds. This rapid transmission makes insecticides ineffective because the aphid transmits the virus before being killed. Seed transmission of SMV allows the virus to persist from one season to the next even when no infected plants remain in the field. SbDV, in contrast, is persistently transmitted, meaning aphids require extended feeding periods (several hours to days) to acquire the virus. While this slower transmission might suggest insecticide applications could be effective, the feeding behavior of aphids means they often feed for extended periods before moving. Moreover, once an aphid becomes viruliferous for SbDV, it remains infectious for its entire life. The ability of SbDV to overwinter in perennial clover and alfalfa provides a year-round reservoir that can initiate epidemics each spring when aphids migrate into soybean fields. SVNV, transmitted by thrips, is also persistent. Thrips larvae acquire the virus by feeding on infected plants, and the virus replicates within the thrips.
The symptoms of soybean virus infections are variable and can be influenced by the soybean variety, virus strain, plant age at infection, temperature, and presence of mixed infections. SMV typically produces mosaic patterns, leaf curling, and seed mottling. The most distinctive feature of SMV infection is seed coat mottling (brown or black discoloration), which reduces seed quality and marketability even when yield is not severely affected. SbDV causes pronounced stunting (hence the name "dwarf"), along with leaf yellowing or reddening. The reddening symptom is particularly striking in some soybean varieties and can be confused with nutrient deficiencies or environmental stress. SVNV produces characteristic vein-associated chlorosis and necrosis that begins at leaf margins and progresses inward. Early infection is more damaging than late infection for all three viruses. For SMV and SbDV, infection within the first four to six weeks after planting can cause near-complete yield loss, while plants infected at the reproductive stage may show only minor symptoms. Mixed infections are common in soybean fields, particularly combinations of SMV and BPMV, which can cause synergistic interactions leading to more severe symptoms and greater yield loss than either virus alone.
Given the unreliability of symptom-based diagnosis, accurate laboratory testing is essential for soybean virus management. ELISA (Enzyme-Linked Immunosorbent Assay) is the most widely used technology for routine, large-scale detection of soybean viruses. The double-antibody sandwich (DAS)-ELISA format is standard, using a capture antibody immobilized on a microplate well, followed by addition of the sample, and then an enzyme-conjugated detection antibody. The intensity of color developed after adding substrate is proportional to the virus concentration in the sample.
| ELISA Detection of Soybean Viruses | Details |
| Soybean mosaic virus (SMV) | Soybean dwarf virus (SbDV) ELISA Kit is designed for the specific detection of Soybean dwarf virus, a luteovirus transmitted persistently by aphids. This kit utilizes highly specific antibodies to recognize the viral coat protein in infected leaf tissue, providing reliable results even in plants that are only mildly symptomatic. The kit is particularly valuable for epidemiological surveys, resistance screening, and certification programs in regions where SbDV is endemic. |
| Soybean dwarf virus (SbDV) | Soybean mosaic virus (SMV) ELISA Kit is used for the detection of Soybean mosaic virus, a potyvirus transmitted non-persistently by aphids and through seed. This kit employs a double-antibody sandwich format to sensitively detect the SMV coat protein in soybean leaf and seed samples. It is an essential tool for seed certification programs, where testing for SMV is required to ensure the production of virus-free seed lots. |
| Soybean vein necrosis virus (SVNV) | Soybean vein necrosis virus (SVNV) ELISA Kit is designed for the rapid and sensitive detection of Soybean vein necrosis virus, a tospovirus transmitted by thrips. This kit provides a standardized, cost-effective solution for large-scale screening of soybean fields, particularly in the United States and other regions where SVNV has become widespread. |
Soybean mosaic virus, Soybean dwarf virus, and Soybean vein necrosis virus represent three of the most important viral threats to global soybean production. Their diverse transmission modes—aphid non-persistent, aphid persistent, and thrips persistent—combined with seed transmission in SMV, demand accurate and accessible detection methods. ELISA, with its proven sensitivity, specificity, and cost-effectiveness, remains the most widely adopted technology for routine testing. The Soybean dwarf virus ELISA Kit, Soybean mosaic virus ELISA Kit, and Soybean vein necrosis virus ELISA Kit provide standardized solutions for breeders, pathologists, certification agencies, and growers. By enabling reliable detection of these invisible pathogens, ELISA supports informed management decisions that help secure global soybean production.
| Cat. No. | Product Name | Size | Application | |
| DEIAPV258 | Soybean dwarf virus (SbDV) ELISA Kit | 500T/1000T/5000T | Qualitative | Inquiry |
| DEIAPV259 | Soybean mosaic virus (SMV) ELISA Kit | 500T/1000T/5000T | Qualitative | Inquiry |
| DEIAPV260 | Soybean vein necrosis virus (SVNY) ELISA Kit | 500T/1000T/5000T | Qualitative | Inquiry |
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