Defensive Chemistry of <i>Senecio miser</i>

Reina, Matı́as; González-Coloma⊥, Azucena; Gutiérrez, Carmen; Cabrera, Raimundo; Rodríguez, Matías L.; Fajardo, Víctor; Villarroel, Luís

doi:10.1021/np000114o

Cited by 82 publications

(93 citation statements)

References 32 publications

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“…As seções foliares foram pesadas e trocadas por novas folhas de 12 em 12 horas até o final do experimento, a fim de calcular o consumo alimentar. O cálculo da porcentagem de redução alimentar (%RA) foi realizado utilizando a fórmula RA= [1-(consumo das lagartas em folhas tratadas/consumo das lagartas na testemunha) x 100] de acordo com Reina et al (2001). Avaliaram-se a mortalidade e a deterrência alimentar das lagartas às 24, 48 e 96 horas após a realização do experimento.…”

Section: Bioensaios Com Lagartas De 3º E De 1º íNstar Teste Por Ingestãounclassified

Atividade inseticida do óleo essencial de pimenta longa (Piper hispidinervum C. DC.) sobre lagarta-do-cartucho do milho Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae)

Lima

Cardoso²,

Moraes³

et al. 2009

Acta Amaz.

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RESUMOOs objetivos desta pesquisa foram a obtenção e caracterização do óleo essencial de folhas de pimenta longa Piper hispidinervum, e avaliação de seu efeito no comportamento e/ou mortalidade da lagarta-do-cartucho do milho Spodoptera frugiperda. O óleo essencial foi obtido pela técnica "arraste a vapor d'água", utilizando-se de um aparelho de Clevenger modificado, e posteriormente submetido, à análise por CG-EM e CG. Foram realizados testes de ingestão e contato tópico em lagartas de 1° e 3° ínstar. Os resultados constataram que o óleo essencial de pimenta-longa possui atividade inseticida sobre S. frugiperda, causando redução alimentar e mortalidade, sendo o safrol (82%) seu constituinte majoritário. Verificou-se mortalidade no teste de ingestão em lagartas de 1° ínstar com CL 50 = 16,2 mg/mL e para lagartas de 3° ínstar a CL 50 = 9,4 mg/mL com redução alimentar CD 50 = 0,72 mg/mL; e de toxicidade aguda no teste de contato tópico com DL 50 = 277,91 μg/lagarta, após o intervalo de tempo de 96 horas, sendo também observados sintomas de neurotoxicidade, como o efeito knock-down. PALAVRAS-CHAVE:Lagarta-do-cartucho, Safrol, Manejo integrado de pragas.Insecticidal Activity of Long-pepper essential oil (Piper hispidinervum C. DC.) on fall armyworm Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) ABSTRACT The objectives of this research were to evaluate the chemical composition and bioactivity of the essential oil from the longpepper leaves (Piper hispidinervum) and its effect on the comportment and/or mortality of the fall armyworm (Spodoptera frugiperda). The essential oil was obtained by steam stream distillation, using the modified Clevenger apparatus, the chemical composition was analyzed by GC-MS and GC. Tests of ingestion and topical application in fall armyworm of 1 st and 3 rd ínstar were made. The results showed that the long-pepper essential oil has insecticide activity on S. frugiperda, causing mortality and food reduction, and safrole (82%) as its majority constituent. Mortality was found in the ingestion test in larvae of 1 st ínstar LC 50 = 16.2 mg/mL for larvae of 3 rd ínstar LC 50 = 9.4 mg/mL, with reduced food CD 50 = 0.72 mg/mL; and acute toxicity test of the contact topic with LD 50 = 277.91 μg/larvae, after an interval of 96 hours, neurotoxicity symptoms were also observed, as knock-down effect.

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Section: Bioensaios Com Lagartas De 3º E De 1º íNstar Teste Por Ingestãounclassified

Atividade inseticida do óleo essencial de pimenta longa (Piper hispidinervum C. DC.) sobre lagarta-do-cartucho do milho Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae)

Lima

Cardoso²,

Moraes³

et al. 2009

Acta Amaz.

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“…Similarly, several sesquiterpene lactones with a g-butenolactone group have been reported as having moderate to high potency as L. decemlineata antifeedants. The PA 37 was found to be an effective antifeedant against L. decemlineata (not adapted to PAs) [23]. Previous data have shown that the CPB is sensitive to the macrocyclic diester senecionine (39), the open diester PA echimidine, and the saturated monoester PA 3'-acetyltrachelanthamine, but with too few structural features in common to draw any conclusions on structure -activity relationships.…”

Section: Pyrrolizidine Alkaloidsmentioning

confidence: 99%

“…Compounds 252 and 253, isolated from S. miser, were found to be effective antifeedants against Myzus persicae and L. decemlineata, respectively [23]. Similarly, several sesquiterpene lactones with a g-butenolactone group have been reported as having moderate to high potency as L. decemlineata antifeedants.…”

Section: Pyrrolizidine Alkaloidsmentioning

confidence: 99%

Chemical and Pharmacological Research on Plants from the Genus Senecio

Yang

Zhao

Wang

et al. 2011

Chemistry & Biodiversity

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“…Estas mismas condiciones son las que se usaron para el desarrollo de los bioensayos descritos más abajo. Las larvas de S. littoralis se alimentaron con una dieta semisintética (Poitut y Bues, 1970) mientras que L. decemlineata, M. persicae y R. padi se mantuvieron alimentándose sobre sus plantas huésped (Solanum tuberosum L., Capsicum annuum L. y Hordeum vulgare L., respectivamente) según lo descrito por Reina et al (2001).…”

Section: Cria Y Mantenimiento De Los Insectosunclassified

Perfil químico y biológico de aceites esenciales de plantas aromáticas de interés agro-industrial en Castilla-La Mancha (España)

Santana¹,

Cabrera²,

González-Coloma⊥³

et al. 2012

Grasas y Aceites

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Vahl., Lavandula x intermedia Emeric ex Loisel., Lavandula latifolia Medik., Lavandula angustifolia Mill. and Thymus vulgaris L. are presented. The essential oils have been analysed by Gas Chromatography Mass Spectrometry and 61 compounds were identified, 23 of which represented more than 1% of the essential oil. The 1,8 cineole (16-23%) appeared as the main compound of Salvia sp. essential oils. The high content of α-thujone was characteristic in S. officinalis oil. Remarkable concentrations of linalool (30-33%), camphor (5-17%) and linalyl acetate (9-28%) were detected in Lavandula sp. oils while carvacrol (21.6%) and p-cimene (23.7%) were the most abundant compounds in T. vulgaris oil. Biological characterization was based on their bioplaguicide activity. The essential oils studied had strong antifeedant effects against Leptinotarsa decemlineata Say, Spodoptera littoralis Boisd., Myzus persicae Sulzer and Rhopalosiphum padi L., phytotoxic activity against Lactuca sativa L. and Lolium perenne L. and also exhibited high antifungal activity against Fusarium sp. Oils from T. vulgaris and L. latifolia showed the highest levels of bioactivity against all target species. These results provide an added-value to the essential oils of aromatic plants of agro-industrial interest for its potential use in the development of natural agrochemicals. KEY-WORDS: Bioplaguicide activity -Essential oilsLavandula -Natural agrochemicals -Salvia -Thymus INTRODUCCIÓNEl cultivo de plantas aromáticas representa una importante actividad agraria en algunas zonas de España y, particularmente, en las comarcas castellano-manchegas de la Alcarria (Cuenca y Guadalajara), Serranía Alta (Cuenca) y Señorío de MolinaAlto Tajo (Guadalajara) donde se concentra el 50% de la producción nacional de lavandas (MARM, 2010).El principal producto comercial obtenido de estas especies vegetales es su aceite esencial (AE). Más del 90% de la producción de AE se utiliza como materia prima en la industria de la cosmética (perfumes y productos para la piel y el cabello), in- RESUMEN Perfil químico y biológico de aceites esenciales de plantas aromáticas de interés agro-industrial en CastillaLa Mancha (España)En este trabajo se presenta el estudio químico y biológico de los aceites esenciales de Salvia officinalis L., Salvia lavandulifolia Vahl., Lavandula x intermedia Emeric ex Loisel., Lavandula latifolia Medik., Lavandula angustifolia Mill. y Thymus vulgaris L. El estudio químico por cromatografía de gases acoplada a espectrometría de masas de los aceites esenciales permitió la identificación de 61 compuestos, de los cuales 23 presentaron un porcentaje mayor o igual al 1 %. Los aceites esenciales de Salvia sp. se caracterizaron por presentar un alto contenido de 1,8 cineol (16-23%) y, en el caso específico de S. officinalis, una elevada proporción de α-tuyona (15.7%). En Lavandula sp., los compuestos mayoritarios del aceite fueron linalol (30-33%), alcanfor (5-17%) y acetato de linalilo (9-28%); mientras que en T. vulgaris lo fueron carvacrol (21.6%) y p-cimeno ...

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Defensive Chemistry of Senecio miser

Cited by 82 publications

References 32 publications

Atividade inseticida do óleo essencial de pimenta longa (Piper hispidinervum C. DC.) sobre lagarta-do-cartucho do milho Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae)

Atividade inseticida do óleo essencial de pimenta longa (Piper hispidinervum C. DC.) sobre lagarta-do-cartucho do milho Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae)

Chemical and Pharmacological Research on Plants from the Genus Senecio

Perfil químico y biológico de aceites esenciales de plantas aromáticas de interés agro-industrial en Castilla-La Mancha (España)

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