Cauliflower mosaic virus

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symptoms of Cauliflower mosaic virus infection on turnip leaves, left (1-2), in comparison to uninfected leaves, right (5-6), scale bars: 6 cm (click on image to enlarge it)
Authors: Angèle Geldreich, Gabrielle Haas, Julie Kubina, Clément Bouton, Mélanie Tanguy, Mathieu Erhardt, Mario Keller, Lyubov Ryabova and Maria Dimitrova
Source: PLoS ONE (2017) 12 (12 - e0189062)

Cauliflower mosaic virus (CaMV)

The virus is wide-spread and infects Brassica species and other crucifers. It causes leaf mosaic, necrosis, stunting and deformation. Cauliflower heads are reduced in size and unmarketable. Infections are favored by warm and dry conditions and the virus is transmitted by aphids in a non-persistent or semi-persistent manner. The virus survives in plant residues.

The particles are spherical, non-enveloped, and 50-53 nm in diameter. The genome is 8.0 kbp long and consists of circular dsDNA with 7 open reading frames and two integrated regions of 700 and 150 bp respectively. The CaMV 35S promoter is used in many transgenic crops because it efficiently activates foreign genes which have been inserted into the host plant.

Vernacular names
• Deutsch: Blumenkohlmosaikvirus
• English: Cauliflower mosaic virus
• Français: mosaïque du chou-fleur

CaMV is the type member of the genus Caulimovirus. Since it infects Arabidopsis thaliana it is also a popular model organism for biochemical studies.

For details see the respective page in Wikipedia.