Discrepancies in Serology-Based and Nucleic Acid-Based Detection and Quantitation of Tomato Spotted Wilt Orthotospovirus in Leaf and Root Tissues from Symptomatic and Asymptomatic Peanut Plants
Thrips-transmitted tomato spotted wilt orthotospovirus (TSWV) causes spotted wilt disease in peanuts. A serological test (DAS-ELISA) is often used to detect TSWV in peanut leaf samples. However, in a few studies, DAS-ELISA detected more TSWV infection in root than leaf samples. It was not clear if t...
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MDPI AG
2021-11-01
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| Series: | Pathogens |
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| Online Access: | https://www.mdpi.com/2076-0817/10/11/1476 |
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| author | Pin-Chu Lai Mark R. Abney Yi-Ju Chen Sudeep Bag Rajagopalbabu Srinivasan |
| author_facet | Pin-Chu Lai Mark R. Abney Yi-Ju Chen Sudeep Bag Rajagopalbabu Srinivasan |
| author_sort | Pin-Chu Lai |
| collection | DOAJ |
| description | Thrips-transmitted tomato spotted wilt orthotospovirus (TSWV) causes spotted wilt disease in peanuts. A serological test (DAS-ELISA) is often used to detect TSWV in peanut leaf samples. However, in a few studies, DAS-ELISA detected more TSWV infection in root than leaf samples. It was not clear if the increased detection was due to increased TSWV accumulation in root tissue or merely an overestimation. Additionally, it was unclear if TSWV detection in asymptomatic plants would be affected by the detection technique. TSWV infection in leaf and root tissue from symptomatic and asymptomatic plants was compared via DAS-ELISA, RT-PCR, and RT-qPCR. TSWV incidence did not vary by DAS-ELISA, RT-PCR, and RT-qPCR in leaf and root samples of symptomatic plants or in leaf samples of asymptomatic plants. In contrast, significantly more TSWV infection and virus load were detected in root samples of asymptomatic plants via DAS-ELISA than other techniques suggesting that DAS-ELISA overestimated TSWV incidence and load. TSWV loads from symptomatic plants via RT-qPCR were higher in leaf than root samples, while TSWV loads in leaf and root samples from asymptomatic plants were not different but were lower than those in symptomatic plants. These findings suggested that peanut tissue type and detection technique could affect accurate TSWV detection and/or quantitation. |
| first_indexed | 2024-03-10T05:10:02Z |
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| id | doaj.art-7cc290021229493782166f4c5e1ed74a |
| institution | Directory Open Access Journal |
| issn | 2076-0817 |
| language | English |
| last_indexed | 2024-03-10T05:10:02Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Pathogens |
| spelling | doaj.art-7cc290021229493782166f4c5e1ed74a2023-11-23T00:53:52ZengMDPI AGPathogens2076-08172021-11-011011147610.3390/pathogens10111476Discrepancies in Serology-Based and Nucleic Acid-Based Detection and Quantitation of Tomato Spotted Wilt Orthotospovirus in Leaf and Root Tissues from Symptomatic and Asymptomatic Peanut PlantsPin-Chu Lai0Mark R. Abney1Yi-Ju Chen2Sudeep Bag3Rajagopalbabu Srinivasan4Department of Entomology, University of Georgia, Griffin, GA 30223, USADepartment of Entomology, University of Georgia, Tifton, GA 31793, USADepartment of Entomology, University of Georgia, Griffin, GA 30223, USADepartment of Plant Pathology, University of Georgia, Tifton, GA 31793, USADepartment of Entomology, University of Georgia, Griffin, GA 30223, USAThrips-transmitted tomato spotted wilt orthotospovirus (TSWV) causes spotted wilt disease in peanuts. A serological test (DAS-ELISA) is often used to detect TSWV in peanut leaf samples. However, in a few studies, DAS-ELISA detected more TSWV infection in root than leaf samples. It was not clear if the increased detection was due to increased TSWV accumulation in root tissue or merely an overestimation. Additionally, it was unclear if TSWV detection in asymptomatic plants would be affected by the detection technique. TSWV infection in leaf and root tissue from symptomatic and asymptomatic plants was compared via DAS-ELISA, RT-PCR, and RT-qPCR. TSWV incidence did not vary by DAS-ELISA, RT-PCR, and RT-qPCR in leaf and root samples of symptomatic plants or in leaf samples of asymptomatic plants. In contrast, significantly more TSWV infection and virus load were detected in root samples of asymptomatic plants via DAS-ELISA than other techniques suggesting that DAS-ELISA overestimated TSWV incidence and load. TSWV loads from symptomatic plants via RT-qPCR were higher in leaf than root samples, while TSWV loads in leaf and root samples from asymptomatic plants were not different but were lower than those in symptomatic plants. These findings suggested that peanut tissue type and detection technique could affect accurate TSWV detection and/or quantitation.https://www.mdpi.com/2076-0817/10/11/1476<i>Arachis hypogaea</i> L.spotted wiltserological detectionoverestimationtissue typevirus accumulation |
| spellingShingle | Pin-Chu Lai Mark R. Abney Yi-Ju Chen Sudeep Bag Rajagopalbabu Srinivasan Discrepancies in Serology-Based and Nucleic Acid-Based Detection and Quantitation of Tomato Spotted Wilt Orthotospovirus in Leaf and Root Tissues from Symptomatic and Asymptomatic Peanut Plants Pathogens <i>Arachis hypogaea</i> L. spotted wilt serological detection overestimation tissue type virus accumulation |
| title | Discrepancies in Serology-Based and Nucleic Acid-Based Detection and Quantitation of Tomato Spotted Wilt Orthotospovirus in Leaf and Root Tissues from Symptomatic and Asymptomatic Peanut Plants |
| title_full | Discrepancies in Serology-Based and Nucleic Acid-Based Detection and Quantitation of Tomato Spotted Wilt Orthotospovirus in Leaf and Root Tissues from Symptomatic and Asymptomatic Peanut Plants |
| title_fullStr | Discrepancies in Serology-Based and Nucleic Acid-Based Detection and Quantitation of Tomato Spotted Wilt Orthotospovirus in Leaf and Root Tissues from Symptomatic and Asymptomatic Peanut Plants |
| title_full_unstemmed | Discrepancies in Serology-Based and Nucleic Acid-Based Detection and Quantitation of Tomato Spotted Wilt Orthotospovirus in Leaf and Root Tissues from Symptomatic and Asymptomatic Peanut Plants |
| title_short | Discrepancies in Serology-Based and Nucleic Acid-Based Detection and Quantitation of Tomato Spotted Wilt Orthotospovirus in Leaf and Root Tissues from Symptomatic and Asymptomatic Peanut Plants |
| title_sort | discrepancies in serology based and nucleic acid based detection and quantitation of tomato spotted wilt orthotospovirus in leaf and root tissues from symptomatic and asymptomatic peanut plants |
| topic | <i>Arachis hypogaea</i> L. spotted wilt serological detection overestimation tissue type virus accumulation |
| url | https://www.mdpi.com/2076-0817/10/11/1476 |
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