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The effect of host plant-induced stomach precipitate on the ability of Myzus persicae (Hemiptera: Aphididae) to transmit sugarbeet yellowing viruses

Published online by Cambridge University Press:  10 July 2009

I. S. Williams*
Affiliation:
IACR – Broom's Barn, Higham, Bury St Edmunds, Suffolk, IP28 6NP, UK
A. M. Dewar
Affiliation:
IACR – Broom's Barn, Higham, Bury St Edmunds, Suffolk, IP28 6NP, UK
A. F. G. Dixon
Affiliation:
University of East Anglia, Norwich, NR4 7TJ, UK
*
*Population Biology Sector, School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK.

Abstract

When Myzus persicae (Sulzer) feeds on healthy sugarbeet it develops a white precipitate inside its stomach which causes the stomach to enlarge. Infection of sugarbeet plants with beet yellows virus (BYV), but not beet mild yellowing virus (BMYV) results in further increases in stomach size. The influence of the white precipitate on the transmission of BYV and BMYV was investigated by rearing M. persicae on sugarbeet Beta vulgaris, Tetragonia expansa and Capsella bursa-pastoris, which are hosts for both BYV and BMYV, BYV and BMYV respectively, but the latter two hosts do not stimulate the formation of white precipitate in the aphid's stomach. Aphids reared on BYV-infected T. expansa were significantly better vectors of BYV than those reared on BYV-infected sugarbeet, but aphids reared on BMYV-infected C. bursa-pastoris did not transmit BMYV more efficiently than those reared on BMYV-infected sugarbeet. The consequences of these results for the spread of beet yellowing viruses are discussed.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1997

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