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Turnip mosaic virus and the quest for durable resistance
1Horticulture Research International, Wellesbourne, Warwick, CV35 9EF, UK.
Molecular Plant Pathology
|June 24, 2010
Summary
Turnip mosaic virus (TuMV) is a unique potyvirus primarily infecting brassicas. This virus exhibits an exceptionally broad host range across numerous plant families, making it a significant agricultural concern.
Area of Science:
- Plant Virology
- Molecular Biology
- Crop Science
Background:
- Turnip mosaic virus (TuMV) is the sole known potyvirus infecting brassicas.
- Other potyvirus isolates may show serological similarity to TuMV but do not infect brassicas.
Purpose of the Study:
- To summarize the taxonomy, physical properties, hosts, and transmission of Turnip mosaic virus (TuMV).
- To highlight TuMV's unique position within the Potyviridae family and its extensive host range.
Main Methods:
- Literature review and synthesis of existing data on TuMV.
- Analysis of physical properties, host range, and transmission vectors.
Main Results:
- TuMV virions are flexuous rods (720 x 15-20 nm), primarily composed of coat protein (95%) and RNA (5%).
- TuMV infects at least 318 species across 43 dicot families and monocots, possessing the broadest host range of any potyvirus.
- Transmission occurs non-persistently via at least 89 aphid species, including Myzus persicae and Brevicoryne brassicae.
Conclusions:
- TuMV represents a significant pathogen due to its specialized brassica infection and extensive host range.
- Understanding TuMV's characteristics is crucial for developing effective disease management strategies in agriculture.
