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Aphid transmissibility of different European beet polerovirus isolates

Kozłowska-Makulska, Anna, Beuve, Monique, Syller, Jerzy, Szyndel, Marek S., Lemaire, Olivier, Bouzoubaa, Salah, Herrbach, Etienne
European journal of plant pathology 2009 v.125 no.2 pp. 337-341
Aphis fabae, Beet mild yellowing virus, Macrosiphum euphorbiae, Myzus ascalonicus, Myzus persicae, amino acid sequences, genetic variation, insect vectors, reverse transcriptase polymerase chain reaction, sugar beet, virus transmission, viruses, France, Poland
Different field isolates of the 'beet poleroviruses' Beet mild yellowing virus (BMYV) and Beet chlorosis virus (BChV) (genus Polerovirus, family Luteoviridae) collected in France and Poland were evaluated for transmissibility from and to sugar beet plants by different aphid species. In general, both BMYV and BChV were efficiently transmitted by Myzus persicae and by a French clone of Macrosiphum euphorbiae. In contrast, transmissibility of the two poleroviruses by an English clone of M. euphorbiae was evidently weaker, although the aphid samples contained the virus as demonstrated by RT-PCR. None of the BMYV or BChV isolates was transmitted by Aphis fabae or Myzus ascalonicus. In attempting to correlate biological properties with molecular variations, the RT proteins were sequenced. Some amino acid point variations, presumably affecting aphid transmissibility, were identified.