期刊
MOLECULAR PLANT PATHOLOGY
卷 5, 期 1, 页码 29-35出版社
WILEY
DOI: 10.1111/j.1364-3703.2004.00202.x
关键词
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A comparative analysis of the synergistic interaction between PVX and either PVY or TEV potyviruses was performed in Nicotiana benthamiana and N. tabacum plants. In each PVX/potyvirus combination, doubly infected plants developed much more severe symptoms than singly infected ones. However, while PVX accumulation increased in doubly infected N. tabacum plants compared with singly infected plants, the accumulation of PVX did not vary drastically in doubly infected N. benthamiana plants with respect to single infected ones. These findings suggest that the relationship between viral titre enhancement and synergism in PVX/potyvirus infections is host dependent. Since PVX and potyviruses contain suppressors of a plant antiviral defence system mediated by gene silencing, differences observed in the response of these two related hosts to PVX/potyvirus interactions might reflect the effect of these viruses on host specific antiviral defences.
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