Phytopathology (2000) 90, 460-466

Sébastien Hauser, Mark Stevens, Christophe Mougel, Helen G. Smith, Christiane Fritsch, Etienne Herrbach and Olivier Lemaire (2000)
Biological, serological, and molecular variability suggest three distinct Polerovirus species infecting beet or rape
Phytopathology 90 (5), 460-466
Abstract: Yellowing diseases of sugar beet can be caused by a range of strains classified as Beet mild yellowing virus (BMYV) or Beet western yellows virus (BWYV), both belonging to the genus Polerovirus of the family Luteoviridae. Host range, genomic, and serological studies have shown that isolates of these viruses can be grouped into three distinct species. Within these species, the coat protein amino acid sequences are highly conserved (more than 90% homology), whereas the P0 sequences (open reading frame, ORF 0) are variable (about 30% homology). Based on these results, we propose a new classification of BMYV and BWYV into three distinct species. Two of these species are presented for the first time and are not yet recognized by the International Committee on Taxonomy of Viruses. The first species, BMYV, infects sugar beet and Capsella bursa-pastoris. The second species, Brassica yellowing virus, does not infect beet, but infects a large number of plants belonging to the genus Brassica within the family Brassicaceae. The third species, Beet chlorosis virus, infects beet and Chenopodium capitatum, but not Capsella bursa-pastoris.
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Database assignments for author(s): Olivier Lemaire, Mark Stevens

Research topic(s) for pests/diseases/weeds:
identification/taxonomy

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Beet mild yellowing virus	Beet/sugarbeet (Beta vulgaris)
	Beet western yellows virus
	Brassica yellowing virus