Beet poleroviruses: close friends or distant relatives?
Mark Stevens1, Benjamin Freeman1, Hsing-Yeh Liu2,
Etienne Herrbach3 and Olivier Lemaire3
1 Broom's Barn Research Station, Higham, Bury St Edmunds,
Suffolk IP28 6NP, UK
2 USDA-ARS, 1636 E. Alisal Street, Salinas, CA 93905, USA
3 INRA, UR-BIVV, 28 rue de Herrlisheim, 68021 Colmar, France
There are three members of the genus Polerovirus (family Luteoviridae)
that induce yellowing of sugar beet: Beet mild yellowing virus
(BMYV), Beet chlorosis virus (BChV) and Beet western yellows
virus-USA (BWYV-USA). Non-beet-infecting isolates of BWYV found
particularly within Europe have now been re-named Turnip yellows virus
(TuYV). Species-specific antibodies are unavailable, but the viruses can
be distinguished by RT-PCR using primers specifically designed to the 5'
end of their respective genomes.
Many members of the Chenopodiaceae are susceptible, including
commercial crops of sugar beet (Beta vulgaris), red beet and spinach.
Experimental hosts include Montia perfoliata, Nicotiana benthamiana
and Arabidopsis thaliana.