When Viruses Play Team Sports: Mixed Infections in Plants

The pathological importance of mixed viral infections in plants might be underestimated except for a few well-characterized synergistic combinations in certain crops. Considering that the host ranges of many viruses often overlap and that most plant species can be infected by several unrelated virus...

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Veröffentlicht in:Phytopathology Jg. 110; H. 1; S. 29
Hauptverfasser: Moreno, Ana Beatriz, López-Moya, Juan José
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States 01.01.2020
Schlagworte:
Animals
Coinfection
Insecta - virology
Plant Diseases - virology
Plant Viruses
virology
disease control and pest management
ISSN:0031-949X
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Zusammenfassung:The pathological importance of mixed viral infections in plants might be underestimated except for a few well-characterized synergistic combinations in certain crops. Considering that the host ranges of many viruses often overlap and that most plant species can be infected by several unrelated viruses, it is not surprising to find more than one virus simultaneously in the same plant. Furthermore, dispersal of the majority of plant viruses relies on efficient transmission mechanisms mediated by vector organisms, mainly but not exclusively insects, which can contribute to the occurrence of multiple infections in the same plant. Recent work using different experimental approaches has shown that mixed viral infections can be remarkably frequent, up to the point that they could be considered the rule more than the exception. The purpose of this review is to describe the impact of multiple infections not only on the participating viruses themselves but also on their vectors and on the common host. From this standpoint, mixed infections arise as complex events that involve several cross-interacting players, and they consequently require a more general perspective than the analysis of single-virus/single-host approaches for a full understanding of their relevance.
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ISSN:0031-949X
DOI:10.1094/PHYTO-07-19-0250-FI