Developmental and Environmental Effects on Sesquiterpene Lactones in Cultivated Arnica montana L.
The amount of sesquiterpene lactones and the lactone profile of Arnica montana L. in flowering and seed formation stages in vitro and in vivo propagated from seeds of German, Ukrainian, and Austrian origin and grown in two experimental fields were studied. It was found that in vitro propagated 2-year plants in full flowering stage accumulated higher amount of lactones in comparison to in vivo propagated 3-year plants and to the seed formation stage, respectively. Helenalins predominated in in vivo propagated 2-year or in vitro propagated 3-year plants. 2-Methylbutyrate (2MeBu) was the principal ester in the samples with prevalence of helenalins, while isobutyrate (iBu) was the major one in the samples with predominance of 11,13-dihydrohelenalins. The results revealed that the environmental conditions on Vitosha Mt. are more suitable for cultivation of A. montana giving higher content of lactones.
['Todorova|Milka|M|', 'Trendafilova|Antoaneta|A|', 'Vitkova|Antonina|A|', 'Petrova|Maria|M|', 'Zayova|Ely|E|', 'Antonova|Daniela|D|']
D018650:Arnica D001317:Austria D004777:Environment D005858:Germany D007783:Lactones D008968:Molecular Conformation D012717:Sesquiterpenes D014455:Ukraine
Sesquiterpene lactones Arnica montana Asteraceae Developmental and environmental factors Helenalins, 11,13-Dihydrohelenalins