Tomato mottle mosaic virus

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Tomato mottle mosaic virus-infected tomato leaf (click on image to enlarge it)
Author(s): Craig G. Webster et al.
Source: Plant Health Progress (2014), 15 (4), p. 152

Tomato mottle mosaic virus (ToMMV)

This virus is widely distributed and infects mainly plants from the family Solanaceae, like tomatoes and Capsicum species. Plants of the family Cucurbitaceae can be experimentally infected. The infections can result in yield reduction. The virus was not described until 2013, when it was discovered in various regions (North America, Asia, Near East) within a few years. Symptoms include foliar mottle, necrosis, leaf deformations, and stunting. The virus can be transmitted mechanically.

The molecular structure of ToMMV is similar to that of other Tobamoviruses, with a single RNA molecule. The RNA has 6399 nucleotides and 4 open reading frames which encode 4 proteins. These are 2 polypeptides with a size of 126 and 183 kDA, a movement protein (30 kDa) and a coat protein (18 kDa), see Li et al., (2017).