AI Article Synopsis
- Milk vetch dwarf virus (MDV) is a significant ssDNA virus affecting legumes and recently tobacco, leading to severe economic losses in China, highlighting the need for effective diagnostics.
- Two novel diagnostic methods, PCR-LFS and RPA-LFS, were created to detect the virus by targeting its coat protein gene.
- Both methods proved highly sensitive, able to detect as few as 10 copies of MDV, making RPA-LFS a promising and rapid option for field use.
Article Abstract
Background: Milk vetch dwarf virus (MDV) is an important ssDNA virus which causes yellowing, stunting and leaf rolling symptoms on legumes. In China, the virus causes great economic losses and has recently been found to infect tobacco. The expansion of its host range and its ability to spread rapidly has given rise to the urgent need for a sensitive, specific and rapid diagnostic assay that can assist in effective disease control.
Methods: Assays based on the polymerase chain reaction combined with lateral flow strip detection (PCR-LFS) and recombinase polymerase amplification combined with LFS (RPA-LFS) were developed targeting the coat protein (CP) gene of MDV.
Results: The PCR and RPA assays could detect respectively 10 copies or 10 copies of MDV by agarose gel electrophoresis. The PCR-LFS and RPA-LFS assays developed could both detect as few as 10 copies per reaction at 37 °C. Both methods could detect MDV in crude leaf extracts.
Conclusions: The RPA-LFS assay developed is a rapid, sensitive and specific method for detecting MDV, which is convenient and has great potential for use in the field.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7353715 | PMC |
| http://dx.doi.org/10.1186/s12985-020-01371-5 | DOI Listing |
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