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dc.contributor.authorJeschke, V
dc.contributor.authorZalucki, JM
dc.contributor.authorRaguschke, B
dc.contributor.authorGershenzon, J
dc.contributor.authorHeckel, DG
dc.contributor.authorZalucki, MP
dc.contributor.authorVassão, DG
dc.date.accessioned2021-05-21T04:09:41Z
dc.date.available2021-05-21T04:09:41Z
dc.date.issued2021
dc.identifier.issn2223-7747
dc.identifier.doi10.3390/plants10050962
dc.identifier.urihttp://hdl.handle.net/10072/404553
dc.description.abstractWhile plants produce complex cocktails of chemical defences with different targets and efficacies, the biochemical effects of phytotoxin ingestion are often poorly understood. Here, we examine the physiological and metabolic effects of the ingestion of glucosinolates (GSLs), the frontline chemical defenses of brassicas (crucifers), on the generalist herbivore Helicoverpa armigera. We focus on kale and cabbage, two crops with similar foliar GSL concentrations but strikingly different GSL compositions. We observed that larval growth and development were well correlated with the nutritional properties of the insect diets, with low protein contents appearing to exacerbate the negative effects of GSLs on growth, pupation and adult eclosion, parameters that were all delayed upon exposure to GSLs. The different GSLs were metabolized similarly by the insect, indicating that the costs of detoxification via conjugation to glutathione (GSH) were similar on the two plant diets. Nevertheless, larval GSH contents, as well as some major nutritional markers (larval protein, free amino acids, and fat), were differentially affected by the different GSL profiles in the two crops. Therefore, the interplay between GSL and the nitrogen/sulfur nutritional availability of different brassicas strongly influences the effectiveness of these chemical defenses against this generalist herbivore.
dc.description.peerreviewedYes
dc.languageen
dc.publisherMDPI AG
dc.relation.ispartofpagefrom962
dc.relation.ispartofissue5
dc.relation.ispartofjournalPlants
dc.relation.ispartofvolume10
dc.subject.fieldofresearchPlant biology
dc.subject.fieldofresearchcode3108
dc.titleSo much for glucosinolates: A generalist does survive and develop on brassicas, but at what cost?
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationJeschke, V; Zalucki, JM; Raguschke, B; Gershenzon, J; Heckel, DG; Zalucki, MP; Vassão, DG, So much for glucosinolates: A generalist does survive and develop on brassicas, but at what cost?, Plants, 2021, 10 (5), pp. 962
dcterms.licensehttps://creativecommons.org/licenses/by/4.0/
dc.date.updated2021-05-21T01:36:56Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorZalucki, Jacinta M.


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