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Terpenoid essential oil metabolism in basil (Ocimum basilicum L.) following elicitation / Cícero Deschamps in The journal of essential oil research, Vol. 18 N° 6 (Novembre-Décembre 2006) 

Public ISBD [article]  in The journal of essential oil research > Vol. 18 N° 6 (Novembre-Décembre 2006) . - pp. 618-621 Titre : Terpenoid essential oil metabolism in basil (Ocimum basilicum L.) following elicitation Type de document : texte imprimé Auteurs : Cícero Deschamps, Auteur ; James E. Simon, Auteur Année de publication : 2006 Article en page(s) : pp. 618-621 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Ocimum  basilicum  Lamiaceae  Essential  oil  composition  Elicitors  Chitosan  Methyl  salicylate  Methyl  jasmonate Résumé : The induction of terpenoid biosynthesis has been observed in many plant species. The accumulation of the ter-penoid essential oils in basil (Ocimum basilicum L.) following elicitors treatment was investigated in this work. Plants that exhibited the same stage of development after approximately two weeks in a hydroponic system were selected for treatment with the elicitors chitosan, methyl jasmonate and methyl salicylate. Following elicitation, plants were manually collected and the remaining non-harvested plants were collected after 72 h, 96 h, 144 h and 192 h. The time-course of terpenoid accumulation showed signifcant higher levels of the sesquiterpene β-caryophyllene and the monoterpenes linalool, 1,8-cineole and limonene. Treatment of plants with chitosan resulted in no induction of the monoterpene limonene and the response on concentration of the other terpenoids was more varied compared to methyl salicylate and methyl jasmonate. Elicitation with methyl jasmonate required the longest time period (192 h after initiation of treatment) to show a signifcant increase in terpenoid production and also resulted in the most uniform response in biosynthesis comparing to the other elicitors. Induction by methyl salicylate occurred in a shorter time frame compared with the other elicitors. The total percentage increase of terpenes at the end of the experiment with respect to the beginning showed a lower effect on methyl salicylate and chitosan treated plants. Methyl jasmonate was the only elicitor that resulted in total percentage increase of β-caryophyllene, 1,8-cinelole, linalool and limonene. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699183#.UXKQUUqC5mM [article] Terpenoid essential oil metabolism in basil (Ocimum basilicum L.) following elicitation [texte imprimé] / Cícero Deschamps, Auteur ; James E. Simon, Auteur . - 2006 . - pp. 618-621. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° 6 (Novembre-Décembre 2006) . - pp. 618-621 Mots-clés : Ocimum  basilicum  Lamiaceae  Essential  oil  composition  Elicitors  Chitosan  Methyl  salicylate  Methyl  jasmonate Résumé : The induction of terpenoid biosynthesis has been observed in many plant species. The accumulation of the ter-penoid essential oils in basil (Ocimum basilicum L.) following elicitors treatment was investigated in this work. Plants that exhibited the same stage of development after approximately two weeks in a hydroponic system were selected for treatment with the elicitors chitosan, methyl jasmonate and methyl salicylate. Following elicitation, plants were manually collected and the remaining non-harvested plants were collected after 72 h, 96 h, 144 h and 192 h. The time-course of terpenoid accumulation showed signifcant higher levels of the sesquiterpene β-caryophyllene and the monoterpenes linalool, 1,8-cineole and limonene. Treatment of plants with chitosan resulted in no induction of the monoterpene limonene and the response on concentration of the other terpenoids was more varied compared to methyl salicylate and methyl jasmonate. Elicitation with methyl jasmonate required the longest time period (192 h after initiation of treatment) to show a signifcant increase in terpenoid production and also resulted in the most uniform response in biosynthesis comparing to the other elicitors. Induction by methyl salicylate occurred in a shorter time frame compared with the other elicitors. The total percentage increase of terpenes at the end of the experiment with respect to the beginning showed a lower effect on methyl salicylate and chitosan treated plants. Methyl jasmonate was the only elicitor that resulted in total percentage increase of β-caryophyllene, 1,8-cinelole, linalool and limonene. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699183#.UXKQUUqC5mM