2010
DOI: 10.1590/s0103-50532010000300023
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Changes in the volatile organic profile of Schinus polygamus (Anacardiaceae) and Baccharis spicata (Asteraceae) induced by galling psyllids

Abstract: Baccharis spicata (Asteraceae) e Schinus polygamus (Anacardiaceae) são plantas nativas do Rio Grande do Sul e são hospedeiras de dois psilídeos galhadores (Hemiptera, Psyllidae) ainda não identificados. As duas plantas em estudo produzem óleo essencial e seus compostos voláteis podem ter um importante papel na interação inseto-planta. A extração e análise dos voláteis das folhas, folhas galhadas e galhas foram realizadas por microextração em fase sólida no modo "headspace" e por cromatografia gasosa com detect… Show more

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Cited by 27 publications
(18 citation statements)
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“…The volatile metabolites in Baccharis are likely to be influenced by ecological and geographical factors as luminosity (Silva et al, 2006), rainfall regime (Ferracini et al, 1995), ground mineral content (Silva et al, 2007) and/or interaction with insects and predators (Damasceno et al, 2010), and the occurrence of chemotypes based on sesquiterpenes has been also reported (Frizzo et al, 2008). It is therefore arguable that the distinct composition of BU-SC and BU-PR are related to ecological or genetics factors; it is to be expected that the differences observed in these samples CNS activities are consequent to these differences in composition.…”
Section: Discussionmentioning
confidence: 99%
“…The volatile metabolites in Baccharis are likely to be influenced by ecological and geographical factors as luminosity (Silva et al, 2006), rainfall regime (Ferracini et al, 1995), ground mineral content (Silva et al, 2007) and/or interaction with insects and predators (Damasceno et al, 2010), and the occurrence of chemotypes based on sesquiterpenes has been also reported (Frizzo et al, 2008). It is therefore arguable that the distinct composition of BU-SC and BU-PR are related to ecological or genetics factors; it is to be expected that the differences observed in these samples CNS activities are consequent to these differences in composition.…”
Section: Discussionmentioning
confidence: 99%
“…1,2 On the other hand, the available data show that about 52 species from the Baccharis genus have been characterized on the basis of the chemical composition of their essential oils. The seasonal variability of the chemical composition of essential oils from some Baccharis species cultivated or growing in natura has already been reported, and it is widely accepted that ecological and geographical factors, such as luminosity, 3 rainfall regimes, 4 mineral content in the soil, 5 interaction with insects and predators, 6 and location and altitude, 7 exert influence on the content of volatile metabolites in plants of this genus. In addition, the extraction method used to obtain the essential oil may affect its chemical composition.…”
Section: Introductionmentioning
confidence: 99%
“…The involvement of this mechanism in plant-galler interactions has been demonstrated in a few systems. For example, Damasceno et al [72] showed that feeding by unidentified galling psyllids caused a change in the volatile profile of Schinus polygamous (peppertree) and Baccharis spicata . Similarly, Oates et al [23] showed that the blue gum chalcid wasp, Leptocybe invasa , induced changes in the volatile terpene profile of a resistant or susceptible host.…”
Section: Plant Defence Responses Against Galling Insectsmentioning
confidence: 99%