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Tomato Brown Rugose Fruit Virus [ToBRFV]: a newly emerged virus

deluxestogie

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Tomato Brown Rugose Fruit Virus [ToBRFV]: a newly emerged virus

This newly emerged virus, Tomato Brown Rugose Fruit Virus, in the same group as Tobacco Mosaic Virus, is appearing on solanaceous crops across the world, including in the US. It was recently found in tomatoes and peppers imported to the US from Mexico.

In tomatoes, it causes rumpled, partly browned, unevenly ripened fruit. I have not seen a description of what signs it produces in Nicotiana tabacum, but tests have demonstrated that tobacco is susceptible to it. ToBRFV does cause leaf mottling and puckering in peppers and tomatoes, so I would assume it causes something similar in tobacco leaves. There are presently no images of this in tobacco on IPM Images.

In potato leaf tomato:


General scientific discussion:

"The occurrence of these tobamoviruses that are transmitted through seeds..."
Transmission in tobacco seed, which does not occur with TMV, is uncertain at this time.

So this is yet another tobacco viral disease that requires laboratory testing for accurate diagnosis. The virus persists in soil for months, rather than years. But since it also affects most, if not all, solanaceous plants--including solanaceous weeds, crop rotation away from tobacco, tomato, peppers, potatoes and eggplant (aubergine) would be a wise precaution.

Bob
 
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TigerTom

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Interesting.

I've seen similar symptoms in my own plants.

I can see why a lab diagnosis would be necessary. Other viruses sometimes produce similar symptoms.
 
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