Pyrrolizidine Alkaloids In The Pericopine Moth Scearctia Figulina (erebidae: Arctiinae): Metabolism And Chemical Defense

dc.creatorMartins
dc.creatorCarlos H. Z.; Trigo
dc.creatorJose R.
dc.date2016
dc.dateagos
dc.date2017-11-13T13:54:13Z
dc.date2017-11-13T13:54:13Z
dc.date.accessioned2018-03-29T06:07:37Z
dc.date.available2018-03-29T06:07:37Z
dc.identifierJournal Of The Brazilian Chemical Society. Soc Brasileira Quimica, v. 27, p. 1437 - 1443, 2016.
dc.identifier0103-5053
dc.identifier1678-4790
dc.identifierWOS:000383789500013
dc.identifier10.5935/0103-5053.20160154
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_serial&pid=0103-5053&lng=en&nrm=iso
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/329346
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1366371
dc.descriptionPyrrolizidine alkaloids (PAs) are defensive compounds present in several plant families. However, some specialist herbivore insects have overcome these toxic compounds and sequester PAs converted to N-oxide as a defense against predators and a precursor of male sexual pheromones. In this context, we investigated PA sequestration by the specialist pericopine moth Scearctia figulina (Erebidae: Arctiinae), which feeds on leaves of Heliotropium transalpinum (Boraginaceae) as larvae. Additionally, we examined the role of PAs against different predators. The PAs sequestered from the host plant were metabolized by larvae and transferred to adults via two main pathways: (i) rinderine and its acetyl derivative (7S, 3' R) were epimerized to intermedine (7R, 3' R) and lycopsamine (7R, 3' S), and (ii) insect PAs were biosynthesized from necine bases obtained from plant-acquired PAs, with necic acids of insect origin. Both metabolic products may be related to the biosynthesis of 7R male pheromone and to chemical defense. Larvae and adults were chemically protected against the spiders Nephila clavipes and Lycosa erythrognatha and the chick Gallus gallus, and this defense may be associated to PAs.
dc.description27
dc.description8
dc.description1437
dc.description1443
dc.languageEnglish
dc.publisherSoc Brasileira Quimica
dc.publisherSão Paulo
dc.relationJournal of the Brazilian Chemical Society
dc.rightsaberto
dc.sourceWOS
dc.subjectCallimorphine
dc.subjectHeliotropium Transalpinum
dc.subjectInsect Pas
dc.subjectLycopsamine
dc.subjectPredation
dc.titlePyrrolizidine Alkaloids In The Pericopine Moth Scearctia Figulina (erebidae: Arctiinae): Metabolism And Chemical Defense
dc.typeArtículos de revistas


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