Biosynthesis of Defensive Compounds from Beetles and Ants

Praly, Laurent; Braekman, Jean Claude; Daloze, Désiré; Pasteels, Jacques

doi:10.1002/ejoc.200300008

Cited by 57 publications

(45 citation statements)

References 72 publications

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“…The alkaloids are synthesized by the ladybirds and seem to originate from fatty acids, as has been shown for the biosynthesis of coccinelline in C. septempunctata fat bodies [48]. Furthermore, their presence in eggs also provides them with a chemical protection that deters predators [47].…”

Section: Chemical Traitsmentioning

confidence: 91%

Evolutionary Perspectives on Myrmecophily in Ladybirds

Vantaux

Roux²,

Magro

et al. 2012

Psyche: A Journal of Entomology

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Myrmecophiles are species that usually have developed specialized traits to cope with the aggressiveness of ants enabling them to live in their vicinity. Many coccinellid species are predators of Hemiptera; the latter is also often protected by ants. Therefore these ladybirds frequently interact with ants, and some species have become myrmecophilous. In this paper, we aim to provide an overview of the evolution of myrmecophilous traits in ladybirds. We then discuss the costs and benefits of myrmecophily and the dietary shift to myrmecophagy observed in a few species.

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Section: Chemical Traitsmentioning

confidence: 91%

Evolutionary Perspectives on Myrmecophily in Ladybirds

Vantaux

Roux²,

Magro

et al. 2012

Psyche: A Journal of Entomology

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“…Many of them possess conspicuous warning coloration, signaling unpalatability, since they release defensive chemicals from specialized glands upon attack (2). Defensive exocrine glands are found in both larval and adult leaf beetles, but these two sets of glands are not homologous (3).…”

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confidence: 99%

Salicyl Alcohol Oxidase of the Chemical Defense Secretion of Two Chrysomelid Leaf Beetles

Michalski

Mohagheghi

Nimtz

et al. 2008

Journal of Biological Chemistry

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Salicyl alcohol oxidase is an extracellular enzyme that occurs in glandular reservoirs of chrysomelid leaf beetle larvae and catalyzes the formation of salicylaldehyde, a volatile deterrent used by the larvae against predators. Salicyl alcohol is the hydrolysis product of salicin, a plant-derived precursor taken up by the beetle larvae from the leaves of willow and poplar trees. The cDNA encoding salicyl alcohol oxidase from two related species Chrysomela tremulae and Chrysomela populi has been identified, cloned, and expressed in an active form in Escherichia coli. The open reading frame of 623 amino acids begins in both enzymes with an N-terminal signal peptide of 21 amino acids. Sequence comparison has revealed that salicyl alcohol oxidase belongs to the family of glucose-methanol-choline oxidoreductase-like sequences with mostly unknown function. Enzymes of this family share similar overall structure with an essentially identical FAD-binding site but possess different catalytic activities. The data suggest that salicyl alcohol oxidase, essential for the activation of the plant-derived precursor salicin, was originally recruited from an oxidase involved in the autogenous biosynthesis of iridoid monoterpenes and found in related chrysomelid leaf beetle species.

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“…No Brasil, estudos como os de Hoffmann & moscardi (1980de Hoffmann & moscardi ( , 1981; mendes et al A maioria dos crisomelídeos são estritamente fitófagos e altamente especializados em seus hábitos alimentares. Assim como outros herbívoros especialistas, eles podem usar as toxinas de suas plantas hospedeiras para sua própria defesa química (Laurent et al 2003). Particularmente, os indivíduos do gênero Phaedon são descritos como oligófagos, alimentando-se de um número bem restrito de hospedeiros e, portanto, apresentam grande potencial como agentes de controle biológico (cox 1996 (2006).…”

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Preferência alimentar de Phaedon confinis Klug (Coleoptera, Chrysomelidae) frente a quatro espécies de Senecio (Asteraceae) de interesse pecuário

2014

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Resumo. Uma das principais causas de mortalidade em bovinos está relacionada à intoxicação por plantas de Senecio spp. (Asteraceae). Assim, alternativas para a redução dessas plantas na região sul do Brasil são necessárias a fim de diminuir as perdas na atividade pecuária. Our study aimed to evaluate the feeding preference of larvae and adults of P. confinis by the species S. brasiliensis, Senecio madagascariensis Poiret, Senecio oxyphyllus DC and Senecio selloi DC. Previously, the insects were fed on S. brasiliensis to the experiment at 22 ± 1 o C temperature, 60 ± 5% relative humidity and 12h photophase. Results obtained indicate that injury caused by P. confinis depended on the species of Senecio offered to the insect, with higher consumption of S. brasiliensis. The developmental stage of the insect influences the feeding preference, since neonate larvae demonstrated higher selectivity to the plant host than adults. In addition to S. brasiliensis, adults can be used to control other species of Senecio, especially S. madagascariensis, since there is oviposition on these plants. Feeding Preference of Larvae and Adults of Phaedon confinis

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Biosynthesis of Defensive Compounds from Beetles and Ants

Cited by 57 publications

References 72 publications

Evolutionary Perspectives on Myrmecophily in Ladybirds

Evolutionary Perspectives on Myrmecophily in Ladybirds

Salicyl Alcohol Oxidase of the Chemical Defense Secretion of Two Chrysomelid Leaf Beetles

Preferência alimentar de Phaedon confinis Klug (Coleoptera, Chrysomelidae) frente a quatro espécies de Senecio (Asteraceae) de interesse pecuário

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