2023 journal article

Acylsugar-mediated resistance as part of a multilayered defense against thrips, orthotospoviruses, and beyond

CURRENT OPINION IN INSECT SCIENCE, 56.

By: M. Mutschler *, G. Kennedy n  & D. Ullman *

MeSH headings : Animals; Thysanoptera; Plant Diseases; Hemiptera; Solanum lycopersicum; Crop Production
TL;DR: This strategy holds promise for enhancing durability of virus resistance genes by reducing the intensity of selection for resistance-breaking variants, and for combined resistance traits providing a layered defense system that reduces pest populations and virus disease prevalence. (via Semantic Scholar)
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Added: May 30, 2023

Resistant varieties are critical tools for crop production, and single-resistance genes providing strong protection against pests or pathogens are deployed in agriculture. Durability of these traits is threatened by emergence of resistance-breaking pests and pathogens. This review focuses on acylsugar-mediated resistance in tomato. Wild tomatoes have type-IV trichomes that exude chemically complex mixtures of acylsugars altering behavior and suppressing multiple pest species, and with thrips and whiteflies (WF), suppressing virus transmission, for example, Tomato spotted wilt orthotospovirus and Tomato yellow leaf curl virus, respectively. Marker-assisted selection and bioassays led to development of advanced cultivated tomato breeding lines rich in acylsugar variations, allowing acylsugar-mediated resistance to be combined with other resistance traits providing a layered defense system that reduces pest populations and virus disease prevalence. This strategy also holds promise for enhancing durability of virus resistance genes by reducing the intensity of selection for resistance-breaking variants.