Variation in Callistemon viminalis (Myrtaceae): New evidence from leaf essential oils

Brophy, Joseph J.; Forster, Paul I.; Goldsack, Robert J.; Hibbert, David Brynn; Punruckvong, Acharaporn

doi:10.1071/sb96021

Cited by 18 publications

(13 citation statements)

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“…The list of constituents found here is generally confirmed by others that have analyzed C. viminalis (Brophy et al, 1985(Brophy et al, , 1997Wheeler et al, 2003), C. citrina , and M. cerifera (Halim and Collins, 1973;Bello et al, 1996) leaves. Feeding and development by the O. vitiosa third instars on the North American M. cerifera was more surprising considering these species are unrelated.…”

Section: Discussionsupporting

confidence: 72%

Maintenance of a narrow host range by Oxyops vitiosa; a biological control agent of Melaleuca quinquenervia

Wheeler¹

2005

Biochemical Systematics and Ecology

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Host range expansion in insect herbivores is often thought to be mediated by several factors, principal among them are secondary plant metabolites. In weed biological control, the host range of a prospective agent is one of the most important considerations in its implementation. Extensive host testing tests seek to determine the behavioral acceptance and nutritional value of different test plant species to the potential agent. A list of test plants is compiled that comprises species that are close taxonomic relatives of the target weed plus other species of economic or ecologic importance. The host testing of the Melaleuca quinquenervia biological control agent Oxyops vitiosa indicated that larvae would accept and complete development on the Australian target weed M. quinquenervia, two Australian ornamental species, Callistemon citrina, Callistemon viminalis (all Myrtaceae). However, the larvae did not complete development when fed a North American species Myrica cerifera (Myricaceae). The study reported here confirms these results and examines the nutritional and performance differences in O. vitiosa larvae fed leaves of these species. The leaf quality factors, percent moisture, percent nitrogen, toughness, and terpenoid content were related to larval survival, performance and digestive indices. The results indicate that plant quality among the Myrtaceae species was generally similar and correspondingly larval survival, performance and digestive indices differed little when larvae were fed leaves of these species. However, This article is a U.S. government work, and is not subject to copyright in the United States.significant differences occurred in the plant quality of the North American M. cerifera compared with the Australian species which had leaves with the lowest percent moisture, lowest leaf toughness, highest percent nitrogen. This species, however, is not a physiological host as none of the neonates survived to pupate. When third instars were switched to M. cerifera from their normal host M. quinquenervia reductions were found in survival, biomass gain, digestive efficiency, and conversion of digested food to insect biomass. The marginal acceptance of this North American native plant in laboratory bioassays appears related to the terpenoid chemistry that has similarities to the taxonomically unrelated host M. quinquenervia. However, the high larval mortality corresponds to several novel terpenoids that are not present in the host. For weed biological control host testing these results indicate that M. cerifera is a poor host for O. vitiosa. Additionally, future test plant lists should include plants with secondary metabolites similar to the target weed as these compounds may constitute behavioral cues that are relevant to these specialized herbivores.Published by Elsevier Ltd.

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Section: Discussionsupporting

confidence: 72%

Maintenance of a narrow host range by Oxyops vitiosa; a biological control agent of Melaleuca quinquenervia

Wheeler¹

2005

Biochemical Systematics and Ecology

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“…ref. 26). While it may be desirable to identify compounds, even with modern GC-MS, it is a time-consuming and not always a successful process.…”

Section: Methodsmentioning

confidence: 93%

Use of gas chromatograms of the essential leaf oils of the genus Eucalyptus for taxonomic purposes: E. subser. Euglobulares (Blakely)

Dunlop

Bignell

Hibbert

et al. 2003

Flavour & Fragrance J

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Leaves were harvested from 37 trees of Eucalyptus subser. Euglobulares Blakely, E. globulus Labill., E. bicostata Maiden, Blakely and Simmonds, E. maidenii F. Muell. and E. pseudoglobulus Naudin ex Maiden, selected from six sites around Australia: both native-growing and cultivated taxa were chosen. Volatile leaf oils were isolated by vacuum distillation and analysed by GC (one tree was previously analysed by GC-MS). The conditions of distillation and analysis were maintained throughout this study. Many of the taxa contained α-pinene (1.5-19.6%), limonene (1.0-5.1%), 1,8-cineole (39.3-71.7%), p-cymene (0.2-2.0%), pinocarvone (0.1-4.2%), β-caryophyllene (0-5.5%), aromadendrene (0.9-20.3%), allo-aromadendrene (0.1-4.0%), α-terpineol (0.1-6.4%), globulol (0.1-5.5%), γ-eudesmol (0-1.8%), α-eudesmol (0.1-5.6%) and β-eudesmol (0.1-10.8%) as the main leaf oil components. The principal components analysis (PCA) and linear discriminant analysis (LDA) performed on the gas chromatograms of the 37 single trees studied revealed groupings of the taxa in approximate agreement with the results obtained from comparative morphological studies; LDA yielded four distinct groups, while PCA was not as discriminating. Nevertheless, in both cases the five pseudoglobulus trees formed distinct groups of their own. In addition, the loading factors of the PCA analysis indicated that the pseudoglobulus group was due to the presence in this taxon of large amounts of the three eudesmol oil components.

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“…Compounds were identified by comparing the retention indices of their peaks on BP-1 column with literature values, [3][4][5][6][7][8][9] and finally confirmed by comparison of mass spectra of the peaks with published data [10][11][12] and computer-matching with Wiley and NIST libraries. The relative amounts of individual components are based on peak areas obtained without FID response factor correction.…”

Section: Identification Of Compoundsmentioning

confidence: 99%

“…The leaf essential oil of C. viminalis exhibited in vitro anthelmintic activity against earthworms, tapeworms and hookworms, while an aqueous extract of the flowers and leaves showed antibacterial activity against Gram-positive bacteria. 1 Although Brophy et al have examined the oils of C. viminalis from Australia in detail, [5][6][7] to the best of our knowledge no detailed GC-MS analysis of C. viminalis leaf oil from India has been carried out. This prompted us to carry out detailed GC and GC-MS analysis of C. viminalis leaf oil from India.…”

Section: Introductionmentioning

confidence: 99%

Essential oil composition of Callistemon viminalis leaves from India

Srivastava

Ahmad

Syamsunder

et al. 2003

Flavour & Fragrance J

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Variation in Callistemon viminalis (Myrtaceae): New evidence from leaf essential oils

Cited by 18 publications

References 0 publications

Maintenance of a narrow host range by Oxyops vitiosa; a biological control agent of Melaleuca quinquenervia

Maintenance of a narrow host range by Oxyops vitiosa; a biological control agent of Melaleuca quinquenervia

Use of gas chromatograms of the essential leaf oils of the genus Eucalyptus for taxonomic purposes: E. subser. Euglobulares (Blakely)

Essential oil composition of Callistemon viminalis leaves from India

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