Soybean mosaic virus

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symptoms of Soybean mosaic virus infection on soybean seedling
Author(s): R. V. Chowda-Reddy, Haiyue Sun, John H. Hill, Vaino Poysa and Aiming Wang
Source: PLoS ONE, 2011, 6 (11) e28342

Soybean mosaic virus (SMV)

The virus is common in areas growing soybeans. Infected plants are stunted with crinkled, deformed and curled leaves which also show mosaic and necrosis. In particular, the young leaves are affected. Seeds have dark discolorations. The yield and the seed quality are reduced. While the average yield losses are small, they can exceed 50% during outbreaks. Losses are more severe if the plants are simultaneously infected with other soybean viruses like Bean pod mottle virus.

SMV is transmitted through seeds and aphids (e.g. Aphis glycines). Management involves the use of disease-free seeds, resistant cultivars as well as early planting (since the disease progresses during warm periods).

Vernacular names
• Deutsch: Sojabohnenmosaik-Virus
• English: SMV
Soybean mosaic virus
• Français: virus de la mosaïque du soja

The filamentous particles are between 650 and 760 nm long and 15-18 nm wide. They survive in vitro for 1-4 days. The genome consists of a linear, positive-sense, single-stranded RNA molecule which contains around 10,000 nucleotides.

For a review of this virus see Hajimorad et al. (2018).