Defenses against Virus and Vector: A Phloem-Biological Perspective on RTM- and SLI1-Mediated Resistance to Potyviruses and Aphids

Combining plant resistance against virus and vector presents an attractive approach to reduce virus transmission and virus proliferation in crops. Restricted Tobacco-etch virus Movement (RTM) genes confer resistance to potyviruses by limiting their long-distance transport. Recently, a close homologu...

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Vydáno v:Viruses Ročník 12; číslo 2; s. 129
Hlavní autoři: Kloth, Karen J., Kormelink, Richard
Médium: Journal Article
Jazyk:angličtina
Vydáno: Switzerland MDPI 22.01.2020
MDPI AG
Témata:
Animals
aphids
Aphids - virology
Disease Resistance - genetics
Genes, Viral
Host Microbial Interactions
Insect Vectors - virology
phloem
Phloem - physiology
Phloem - virology
Plant Diseases - virology
plant resistance
Potyvirus - genetics
Potyvirus - pathogenicity
potyviruses
Review
phloem
plant resistance
aphids
potyviruses
ISSN:1999-4915, 1999-4915
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Shrnutí:Combining plant resistance against virus and vector presents an attractive approach to reduce virus transmission and virus proliferation in crops. Restricted Tobacco-etch virus Movement (RTM) genes confer resistance to potyviruses by limiting their long-distance transport. Recently, a close homologue of one of the RTM genes, SLI1, has been discovered but this gene instead confers resistance to Myzus persicae aphids, a vector of potyviruses. The functional connection between resistance to potyviruses and aphids, raises the question whether plants have a basic defense system in the phloem against biotic intruders. This paper provides an overview on restricted potyvirus phloem transport and restricted aphid phloem feeding and their possible interplay, followed by a discussion on various ways in which viruses and aphids gain access to the phloem sap. From a phloem-biological perspective, hypotheses are proposed on the underlying mechanisms of RTM- and SLI1-mediated resistance, and their possible efficacy to defend against systemic viruses and phloem-feeding vectors.
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ISSN:1999-4915
1999-4915
DOI:10.3390/v12020129