1887

Abstract

The distribution of potyviruses in mixed infected plants was investigated by using green and red fluorescent proteins (GFP, DsRed). Full-length cDNA clones of (PPV-NAT-; PPV-NAT-), (TVMV-; TVMV-) and (ClYVV-GFP) expressing fluorescent proteins, referred to here as labelled viruses, were used to characterize the distribution of different potyviral populations (e.g. TVMV-/PPV-NAT-), as well as populations of identical, but differently labelled potyviruses (e.g. PPV-NAT-/PPV-NAT-) or in mixed infections of potyviruses with labelled (PVX). Plants infected by any of the PVX/potyvirus combinations exhibited synergistic symptoms and large numbers of cells were doubly infected. In contrast, co-infections of differently labelled potyvirus populations appeared non-synergistic and remained predominantly separate in the infected plants, independent of whether different viruses or identical but differently labelled viruses were co-infecting. Contact of differently labelled virus populations that exhibited spatial separation was restricted to a small number of cells at the border of different fluorescent cell clusters.

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2003-10-01
2020-11-25
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