Metabolism of Exogenous Monoterpenes and their Epoxides in Seedlings of Pinus pinaster Ait.

Njar, Vincent C.O.; Arnold, Louise; Banthorpe, D. V.; Branch, Stephanie A.; Christie, Alaistair C.; Marsh, David C.

doi:10.1016/s0176-1617(11)80648-6

Cited by 6 publications

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“…P. pinaster is the most common pine in the Mediterranean region. It is grown on mineral soil, and there are more than 4 million hectares of maritime pine forest in France, Portugal, Spain, Italy, Morocco, Tunisia, and Algeria [1,6].Numerous authors [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] have extensively studied the different uses of maritime pine trees. Comprehensive investigations of the chemical, biological, and genetic side of this species have been reported [2][3][4][5][6][7].…”

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Analysis of Essential Oil from the Needles of Pinus pinaster Growing in Algeria

2005

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The needle oil of the Algerian maritime pine (Pinus pinaster Ait.) growing in natural habitats in Sidi Feradj (Algiers region) was obtained by hydrodistillation in 0.3% yield and analyzed by GC and GC/MS. More than 46 compounds amounting to 65.2% of the total oil were identified. The main components were β-caryophyllene (26.6%), allo-aromadendrene (12.5%), and α-humulene (4.3%). P. pinaster is the most common pine in the Mediterranean region. It is grown on mineral soil, and there are more than 4 million hectares of maritime pine forest in France, Portugal, Spain, Italy, Morocco, Tunisia, and Algeria [1,6].Numerous authors [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] have extensively studied the different uses of maritime pine trees. Comprehensive investigations of the chemical, biological, and genetic side of this species have been reported [2][3][4][5][6][7]. The biosynthesis of monoterpenes and sesquiterpenes of P. pinaster have been carried out by many investigators [8][9][10]. The antimicrobial activities of P. pinaster have been reported by Chalchat et al. and Hmamouchi et al. [11,12].Durel et al. selected the genotype for the vigor trait in maritime pine as the economically important one [5,13].To the best of our knowledge, there is no previous report on the chemical composition of the essential oil of P. pinaster Ait. from Algeria. The aim of this paper is to extend our knowledge and report preliminary results on the needle oil composition of P. pinaster Ait. growing in Algeria.More than 46 components amounting to 65.2% (area percent) of the total oil were identified and quantified as oil constituents on the basis of retention indices and mass spectra. Table 1 lists the constituents of the essential oils in order of elution in a DB-1 column, their percentage, and their retention indices on the column. The sesquiterpene hydrocarbons had the highest contribution (51.6%). This fraction is dominated by β-caryophyllene (26.6%), allo-aromadendrene (12.5%), α-humulene (4.3%), and α-selinene (3.5%). The monoterpene fraction was relatively poor; it represented 1.2% of monoterpene hydrocarbons and 1.8% of oxygenated monoterpene. Table 2 summarizes previous investigations of authors on the oils hydrodistilled (the three main components) from several populations of P. pinaster. We see that our maritime pine oil was dominated by β-caryophyllene (26.6%). These results agree with previous studies on the essential oil of Morocco maritime pine reported by Hmamouchi et al., who found that caryophyllene (22.2%) constitutes an important part of the sesquiterpene hydrocarbons (64.6%) [12]. In contrast to our result, the studies of Gleizes et al. on the essential oils from French maritime pine showed a significant difference in their composition, consisting of 40.2% of sesquiterpene hydrocarbons and 59.8% of monoterpene hydrocarbons [9]. In addition, Pauly et al. examined the needle oil of the same species originating from France and established that it contain 42% monoterpenes, 35% sesquiterpenes, and 23% oxyg...

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“…Comprehensive investigations of the chemical, biological, and genetic side of this species have been reported [2][3][4][5][6][7]. The biosynthesis of monoterpenes and sesquiterpenes of P. pinaster have been carried out by many investigators [8][9][10]. The antimicrobial activities of P. pinaster have been reported by Chalchat et al and Hmamouchi et al [11,12].…”

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Analysis of Essential Oil from the Needles of Pinus pinaster Growing in Algeria

2005

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Problems and Perspectives in the Study of Metabolic Turnover of Plant Secondary Metabolites

Mihaliak

Gershenzon

Croteau

1992

Secondary-Metabolite Biosynthesis and Metabolism

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Absence of rapid terpene turnover in several diverse species of terpene-accumulating plants

1993

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Terpenes are commonly believed to undergo rapid metabolic turnover in plants, but the evidence for this process comes largely from studies that used detached organs or applied radiolabeled precursors in unnatural ways. When CO pulse labeling experiments were carried out with intact plants of four taxonomically distant, terpene-accumulating species, no significant turnover of monoterpenes, sesquiterpenes or diterpenes was detected in young foliage over a two week period after exposure to CO. These results are consistent with those of other investigations performed under physiologically realistic conditions, and caution against the uncritical incorporation of turnover into models or theories concerning plant chemical defense.

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Metabolism of Exogenous Monoterpenes and their Epoxides in Seedlings of Pinus pinaster Ait.

Cited by 6 publications

References 9 publications

Analysis of Essential Oil from the Needles of Pinus pinaster Growing in Algeria

Analysis of Essential Oil from the Needles of Pinus pinaster Growing in Algeria

Problems and Perspectives in the Study of Metabolic Turnover of Plant Secondary Metabolites

Absence of rapid terpene turnover in several diverse species of terpene-accumulating plants

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