Journal
CURRENT OPINION IN VIROLOGY
Volume 26, Issue -, Pages 8-14Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.coviro.2017.06.010
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Funding
- German New Zealand cooperation grant from the Federal Office for Agriculture and Food, Germany
- Royal Society of New Zealand
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Mild strain cross-protection is currently an important method for the production of high quality plant products; despite challenge from severe virus isolates the initial protecting strain precludes symptom development. The mechanism of cross-protection is not yet resolved as RNA silencing does not sufficiently explain the phenomenon. Six requirements have been put forward to ensure long-lasting protection. We propose two additional requirements for effective and durable mild strain cross-protection; mild strains based on knowledge of the mechanism and consideration of impacts to consumers. Future research on predicting phenotype from genotype and understanding virus-plant and virus-vector interactions will enable improvement of cross-protective strains. Shared international databases of whole ecosystem interactions across a wide range of virus patho- and symbiotic-systems will form the basis for making step-change advances towards our collective ability to engineer and improve mild strain cross-protection.
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