Publicación: Characterization of the detrimental effects of type IV glandular trichomes on the aphid Macrosiphum euphorbiae in tomato
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2021
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info:eu-repo/semantics/openAccess
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Wiley, Society of Chemical Industry
Resumen
BACKGROUND
Glandular trichomes are essential in plants' defence against pests however, the mechanisms of action are not completely understood. While there is considerable evidence of feeding and movement impairment by trichomes, the effect on other traits is less clear. We combined laboratory and greenhouse experiments with molecular analysis to understand how glandular trichomes affect the behavior, population growth, and the expression of biomarkers involved in detoxification, primary metabolism, and developmental pathways of the aphid Macrosiphum euphorbiae. We used two isogenic tomato lines that differ in the presence of type IV glandular trichomes and production of acylsucroses; i.e.,Solanum lycopersicum cv. ‘Moneymaker’ and an introgressed line from Solanum pimpinellifolium (with trichomes type IV).
RESULTS
Type IV glandular trichomes affected host selection and aphid proliferation with aphids avoiding, and showing impaired multiplication on the genotype with trichomes. The exposure to type IV glandular trichomes resulted in the overexpression of detoxication markers (i.e., Hsp70, Hsp17, Hsp10); the repression of the energetic metabolism (GAPDH), and the activation of the ecdysone pathway; all these, underlying the key adaptations and metabolic trade-offs in aphids exposed to glandular trichomes.
CONCLUSION
Our results demonstrate the detrimental effect of glandular trichomes (type IV) on the aphid and put forward their mode of action. Given the prevalence of glandular trichomes in wild and cultivated Solanaceae; and of the investigated molecular biomarkers in insects in general, our results provide relevant mechanisms to understand the effect of trichomes not only on herbivorous insects but also on other trophic levels.
Descripción
The registered version of this article, first published in “Pest Manag Sci. 2021 ", is available online at the publisher's website: Wiley
Society of Chemical Industry, https://doi.org/10.1002/ps.6437
La versión registrada de este artículo, publicado por primera vez en “Pest Manag Sci. 2021", está disponible en línea en el sitio web del editor: Wiley
Society of Chemical Industry, https://doi.org/10.1002/ps.6437
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Citación
Blanco-Sánchez L, Planelló R, Llorente L, Díaz-Pendón JA, Ferrero V, Fernández-Muñoz R, Herrero Ó, de la Peña E. Characterization of the detrimental effects of type IV glandular trichomes on the aphid Macrosiphum euphorbiae in tomato. Pest Manag Sci. 2021 Sep;77(9):4117-4127. doi: 10.1002/ps.6437.
Centro
Facultades y escuelas::Facultad de Ciencias
Departamento
Física Matemática y de Fluídos