Orthotospovirus arachinecrosis
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Author: Rakesh Kumar
Source: APSnet
Orthotospovirus arachinecrosis
Assigned virus:
• groundnut bud necrosis virus (GBNV)
The groundnut bud necrosis virus is found in southern Asia and is of quarantine concern in other regions. It causes bud necrosis on groundnuts (peanuts) and bud blight of soybean. Various other crops like tomato or cowpea can also become infected. In tomatoes and groundnuts, the disease incidence and the yield losses can surpass 50%. Several thrips species like Thrips palmi are known to transmit the virus in a circulative and propagative manner.
Infected groundnuts show initially chlorotic spots on the young leaves. Subsequently, necrosis develops on the leaves, including the terminal bud. The symptoms on infected tomato plants are necrotic patches and rings on the leaves as well as the stems, followed by wilting of the whole plants. Tomato fruits show diffuse, yellowish patches.
Like in other tospoviruses, the particles of GBNV are approximately spherical with a diameter of around 100 nm. The genome consists of three single-stranded RNA molecules which are named S, M and L for small, medium and large.
| Vernacular names | |
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| • English: | groundnut bud necrosis virus bud blight of soybean peanut bud necrosis |
The name 'peanut bud necrosis virus' has been previously also used for this virus, but 'groundnut bud necrosis virus' is officially recognized (see ICTV).
- Other images of groundnut bud necrosis virus (APSnet - click to enlarge)
symptoms on groundnut (authors Muttanna Revadi, A. Srinivasaraghavan and Gururaj Sunkad)
symptoms on groundnut (authors Muttanna Revadi, A. Srinivasaraghavan and Gururaj Sunkad)
