Identification of the Ubiquitous Antioxidant Tripeptide Glutathione as a Fruit Fly Semiochemical.
J Agric Food Chem
; 65(39): 8560-8568, 2017 Oct 04.
Article
em En
| MEDLINE
| ID: mdl-28911226
ABSTRACT
Many insects mark their oviposition sites with a host marking pheromone (HMP) to deter other females from overexploiting these sites. Previous studies have identified and used HMPs to manage certain fruit fly species; however, few are known for African indigenous fruit flies. The HMP of the African fruit fly, Ceratitis cosyra, was identified as the ubiquitous plant and animal antioxidant tripeptide, glutathione (GSH). GSH was isolated from the aqueous extract of adult female fecal matter and characterized by LC-QTOF-MS. GSH level increased with increasing age of female fecal matter, with highest concentration detected from 2-week-old adult females. Additionally, GSH levels were 5-10-times higher in fecal matter than in the ovipositor or hemolymph extracts of females. In bioassays, synthetic GSH reduced oviposition responses in conspecifics of C. cosyra and the heterospecific species C. rosa, C. fasciventris, C. capitata, and Zeugodacus cucurbitae. These results represent the first report of a ubiquitous antioxidant as a semiochemical in insects and its potential use in fruit fly management.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Feromônios
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Tephritidae
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Glutationa
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Antioxidantes
Tipo de estudo:
Diagnostic_studies
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Prognostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article