Scientists review faster ways to catch a sneaky plant virus
Nihaluddin S, Rengasamy K, Sivadoss SR, Rajendran L, Manivannan N
Crop Improvement
If you've ever seen ring-shaped spots or dead patches on tomato, sunflower, or ornamental leaves in a garden and blamed the wrong culprit, this virus and its thrips-and-pollen spread pattern might be why.
Tobacco streak virus is a plant pathogen that hitches rides on pollen and tiny insects called thrips, infecting a wide range of crops and often causing symptoms that look like other diseases. Scientists have historically struggled to tell it apart from lookalike infections, but this review rounds up newer, quicker DNA tests, including some that could work in the field without a lab, plus emerging strategies like gene editing and RNA-based defenses to help stop its spread.
Key Findings
TSV spreads through sap, infected pollen, and pollen-feeding thrips, making its epidemiology unusually complex compared to typical plant viruses
Diagnostics have progressed from older serological and biological assays to RT-PCR, real-time PCR, multiplex PCR, and isothermal methods like RPA and LAMP, with CRISPR/Cas-based detection emerging as a newer tool
Major unresolved challenges include limited field validation of new tests, poor assay standardization, weak multiplex detection capability, and a scarcity of TSV-resistant crop cultivars
chevron_right Technical Summary
Tobacco streak virus damages many crops worldwide, from tomatoes to sunflowers, and often gets misdiagnosed because its symptoms look like other plant diseases. This review explains how new fast, portable DNA-based tests and gene-editing approaches could help farmers catch and manage the virus before it spreads.
Abstract Preview
Original paper
Molecular diagnostics and integrated management challenges of tobacco streak virus: Current status and future perspectives.
Tobacco streak virus (TSV) is an economically important viral pathogen causing severe yield and quality losses in several agricultural, horticultural and medicinal crops worldwide. Its complex epid...
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