title: Cytokinin and auxin effect on the terpenoid profile of the essential oil and morphological characteristics of shoot cultures of Artemisia alba.
abstract: The influence of plant growth regulators (PGR) on the essential oil composition and in vitro development of A. alba shoot cultures was studied. Two types of oils were determined, based on their terpenoid content. Close relations between the morphogenetic effects of PGR and the essential oil profile of the species were observed Predominance of root over shoot development was connected with a drop in the amounts of sesquiterpenoids and the direction of biosynthesis towards oxygenated monoterpenoids in the PGR-free control medium, as well in those with 1.0 mg L(-1) indole-3-butyric acid (IBA) supplementation. On the contrary, lack of root formation and stimulated callusogenesis caused by the addition of 0.2 mg L(-1) 6-benzyladenine (BA), irrespectively of the presence of IBA (either 0.5 mg L(-1) or 1.0 mg L(-1)), resulted in the strong prevalence of sesquiterpenoids in the oils. These results are indicative that the morphological development ofA. alba shoot cultures affects the terpenoid biosynthetic pathway bringing out the hypothesis for a possible root to shoot signaling.
authors.affiliation: Department of Chemistry of Natural Compounds, Institute of Organic Chemistry with Centre ofPhytochemistry, Bulgarian Academy of Sciences, Acad G. Bonchev bl. 9, Sofia 1113, Bulgaria. k_danova@abv.bg
authors.forename: Kalina
authors.initials: K
authors.lastname: Danova
authors.forename: Milka
authors.initials: M
authors.lastname: Todorova
authors.forename: Antoaneta
authors.initials: A
authors.lastname: Trendafilova
authors.forename: Ljuba
authors.initials: L
authors.lastname: Evstatieva
mesh_terms: D019306:Artemisia / Q000737:chemistry / Q000187:drug effects* / Q000378:metabolism; D003583:Cytokinins / Q000494:pharmacology*; D008401:Gas Chromatography-Mass Spectrometry; D007210:Indoleacetic Acids / Q000494:pharmacology*; D009822:Oils, Volatile / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry; D018520:Plant Shoots / Q000737:chemistry / Q000378:metabolism; D013729:Terpenes / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology*; D046509:Tissue Culture Techniques
chemical_list: D003583:Cytokinins; D007210:Indoleacetic Acids; D009822:Oils, Volatile; D010938:Plant Oils; D013729:Terpenes