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Beet luteovirus coat protein sequence variation |
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| Authors: | J R de MIRANDA M STEVENS E de BRUYNE H G SMITH C BIRD R HULL |
| Institution: | John Innes Centre, Norwich Research Park, Colney, Norwich NR4 7UH, UK;IACR-Broom's Barn, Higham, Bury St Edmonds, Suffolk IP28 6NP, UK;SES Europe nv, Industriepark 15, B-3300 Tienen, Belgium;ZENECA Seeds, Jealott's Hill Research Station, Bracknell, Berks RG12 6EY, UK |
| Abstract: | The sequences of cDNA clones covering the coat protein genes of 29 isolates of beet mild yellowing virus from sugar beet and beet western yellows virus mainly from oilseed rape were compared. The sequences could be partitioned into seven distinct clusters falling into three main groups. Group 1 isolates were found both in oilseed rape and sugar beet mainly from north Europe; group 2 isolates were from hosts other than sugar beet in England and France; group 3 isolates were beet-specific and found from northern Italy and Iran. The factors affecting this variation and its significance in relation to coat protein-mediated protection are discussed. |
| Keywords: | Beet mild yellowing virus beet western yellow virus beet luteovirus virus coat protein virus variation |