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...

Full description

Saved in:
Bibliographic Details
Published in:Viruses Vol. 12; no. 2; p. 129
Main Authors: Kloth, Karen J., Kormelink, Richard
Format: Journal Article
Language:English
Published: Switzerland MDPI 22.01.2020
MDPI AG
Subjects:
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
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
ObjectType-Review-3
content type line 23
ISSN:1999-4915
1999-4915
DOI:10.3390/v12020129