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Review

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

1
Laboratory of Entomology, Wageningen University and Research, 6700 AA Wageningen, The Netherlands
2
Laboratory of Virology, Wageningen University and Research, 6700 AA Wageningen, The Netherlands
*
Author to whom correspondence should be addressed.
Received: 11 December 2019 / Revised: 17 January 2020 / Accepted: 19 January 2020 / Published: 22 January 2020
(This article belongs to the Special Issue Plant Virus Transmission by Vectors)
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. View Full-Text
Keywords: potyviruses; aphids; plant resistance; phloem potyviruses; aphids; plant resistance; phloem
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MDPI and ACS Style

Kloth, K.J.; Kormelink, R. Defenses against Virus and Vector: A Phloem-Biological Perspective on RTM- and SLI1-Mediated Resistance to Potyviruses and Aphids. Viruses 2020, 12, 129. https://0-doi-org.brum.beds.ac.uk/10.3390/v12020129

AMA Style

Kloth KJ, Kormelink R. Defenses against Virus and Vector: A Phloem-Biological Perspective on RTM- and SLI1-Mediated Resistance to Potyviruses and Aphids. Viruses. 2020; 12(2):129. https://0-doi-org.brum.beds.ac.uk/10.3390/v12020129

Chicago/Turabian Style

Kloth, Karen J., and Richard Kormelink. 2020. "Defenses against Virus and Vector: A Phloem-Biological Perspective on RTM- and SLI1-Mediated Resistance to Potyviruses and Aphids" Viruses 12, no. 2: 129. https://0-doi-org.brum.beds.ac.uk/10.3390/v12020129

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