Tomato brown rugose fruit virus

Tomato brown rugose fruit virus (ToBRFV) is a plant virus that affects:

  • tomato
  • capsicum
  • chilli.

ToBRFV causes yellow and brown spots to appear on fruit, making it unmarketable.

This virus has not been detected in Australia, but it poses a biosecurity risk to Australian tomato and capsicum industries. Growers need to be aware of symptoms for early detection.

Symptoms

Symptoms in tomatoes

Tomato leaf with mosaic leaf pattern

Leaves infected with ToBRFV show (Figure 1):

  • yellowing
  • mosaic patterns
  • mottling
  • leaf narrowing (occasionally).

Wilting and dying stems of fruit and bracts surrounding the fruit

Brown spots may appear on stems of fruit, leaves and the bracts surrounding the fruit.

Brown lesions on green tomato fruit

Fruit infected with ToBRFV (Figures 2, 3, and 4):

  • show brown or yellow spots
  • deformation
  • ripen irregularly, making it unmarketable.

Green and red marbling on mature tomatoes

Symptoms can vary depending on the variety of tomato. Tomatoes with the Tm-22 resistance gene (used against other Tobamoviruses) are susceptible to ToBRFV.

Symptoms on fruit could be confused with tomato spotted wilt virus (TSWV).

Red capsicum fruits on a plant with red and orange blotched colouring

Symptoms in capsicum (Capsicum annum species complex)

Capsicum leaves infected with ToBRFV show (Figure 5):

  • deformation
  • yellowing
  • mosaic patterns.

Capsicum fruits infected with ToBRFV are deformed with areas of yellow, brown or green stripes or blotches.

Spread of disease

ToBRFV can be transmitted through propagation materials such as:

  • seeds
  • plants for planting
  • grafts
  • cuttings.

It can survive in seeds, plant debris and contaminate soil for months. The virus can be also be transmitted through contact with equipment and clothing.

Overseas, bumble bees in glasshouses have been involved in spreading ToBRFV. Because of this, it's possible that insects could spread the virus if it established in Australia.

Managing disease

To safeguard your crops from ToBRFV:

  • practise good plant hygiene
  • source seed, seedlings and graft material that is free of ToBRFV from a reliable supplier
  • test a proportion of seed and seedlings for ToBRFV
  • monitor crops regularly for ToBRFV
  • make sure staff and visitors comply with on-farm biosecurity and hygiene practices
  • disinfect tools, propagating material and equipment with sodium hypochlorite (1% solution of a 12 per cent concentrate of pool chlorine)
  • remove volunteer or wild tomato plants that could act as reservoirs for the virus, such as fat hen (Chenopodium murale), quinoa (Chenopodium quinoa), Petunia hybrids (garden plants) and black nightshade (Solanum nigrum).

Moving tomato and capsicum seeds

The federal Department of Agriculture has introduced emergency measures for the importation of tomato and capsicum seed. See:

Distribution of ToBRFV

ToBRFV was first reported in 2014 on tomatoes in Israel. It has since been reported in Jordan, Mexico, Germany, USA (California), Italy (Sicily), Northern Palestine, United Kingdom, Netherlands, Greece, China and Spain. The wide distribution of ToBRFV has been attributed the global movement of seed.

The ToBRFV has since been eradicated from a tomato greenhouse crop in the United States.

Download the fact sheet

Download the ToBRFV fact sheet:

Photo credits

Figure 1 photo courtesy of Luria et al., Agricultural Research Organization, Volcani Center, doi:10.1371/journal.pone.0170429

Figure 2 photo courtesy of Luria et al., Agricultural Research Organization, Volcani Center, doi:10.1371/journal.pone.0170429

Figure 3 photo courtesy of Diana Godinez, EPPO Global Database

Figure 4 photo courtesy of Aviv Dombrovsky, Agricultural Research Organization, Volcani Center

Figure 5 photo courtesy of Raed Alkowni, EPPO Global Database

Page last updated: 24 Aug 2021