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Abstract

Single- versus multiple-pest infestation affects differently the biochemistry of tomato (Solanum lycopersicum `Ailsa Craig´).

Tomato is susceptible to pest infestations by both spider mites and aphids. The effects of each individual pest on plants are known, while multiple-pest infestations have received little interest. We studied the effects of single- versus multiple-pest infestation by Tetranychus urticae and Myzus persicae on tomato biochemistry (Solanum lycopersicum) by combining a metabolomic approach and analyses of carotenoids using UHPLC-ToF-MS and volatiles using GC-MS. Plants responded differently to aphids and mites after three weeks of infestation, and a multiple infestation induced a specific metabolite composition in plants. Besides, we showed that volatiles emission differed between the adaxial and abaxial leaf epidermes, and identified compounds emitted particularly in response to a multiple-infestation (cyclohexadecane, dodecane, aromadendrene and β-elemene). Finally, the carotenoid concentrations in leaves and stems were more affected by multiple than single infestations. Our study highlights and discusses the interplay of biotic stressors within the terpenoid metabolism.



Errard, A.; Ulrichs, Ch.; Kühne, S.; Mewis, I.; Drungowski, M.; Schreiner, M.; Baldermann, S. 2015. Single- versus multiple-pest infestation affects differently the biochemistry of tomato (Solanum lycopersicum `Ailsa Craig´). Journal of Agricultural and Food Chemistry 63(46), 10103-10111.

DOI:10.1021/acs.jafc.5b03884.