More than trichomes and acylsugars: the role of jasmonic acid as mediator of aphid resistance in tomato

This study investigates the impact of priming on the resistance of tomato plants to the potato aphid Macrosiphum euphorbiae, focusing on the role of glandular trichomes. Glandular trichomes are specific hairs that provide protection to tomato plants against herbivorous insects. The experimental prim...

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Bibliographic Details
Published inJournal of plant interactions Vol. 18; no. 1
Main Authors Blanco-Sánchez, Lidia, Planelló, Rosario, Ferrero, Victoria, Fernández-Muñoz, Rafael, de la Peña, Eduardo, Díaz Pendón, Juan Antonio
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 31.12.2023
Taylor & Francis Ltd
Taylor & Francis Group
Subjects
Acids
Acylsugars
Aphidoidea
cross-talk
Defense mechanisms
glandular trichomes
Herbivores
hormonal pathways
Infestation
Insects
Jasmonic acid
Macrosiphum euphorbiae
Nahg
Pest resistance
Pests
plant defences
Plant resistance
potato aphid
Potatoes
Priming
Signal transduction
Solanum lycopersicum
Spr2
Tomatoes
Trichomes
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Summary:This study investigates the impact of priming on the resistance of tomato plants to the potato aphid Macrosiphum euphorbiae, focusing on the role of glandular trichomes. Glandular trichomes are specific hairs that provide protection to tomato plants against herbivorous insects. The experimental priming conducted in this study revealed that prior infestation by Spodoptera littoralis caterpillars increased the plant's resistance against M. euphorbiae, pointing at the jasmonic acid (JA) signaling pathway in regulating this plant-aphid interaction. Glandular trichomes type IV were effective against aphids regardless of the previous infestation. Using JA-deficient tomato (spr2), we observed that M. euphorbiae multiplication increased, while the number of aphids on salicylic -deficient NahG plants was lower than in the wildtype Moneymaker. These findings emphasize the crucial role of the JA signaling pathway in tomato plant resistance to aphids and the importance of glandular trichomes to enhance plant defences against pests.
ISSN:1742-9145
1742-9153
DOI:10.1080/17429145.2023.2255597