Impact of Exogenous Elicitors on Artemisinin Production and Trichome Density in Artemisia annua L. under Subtropical Conditions
Keywords:Artemisia; artemisinin; sesquiterpene; terpenoids; trichome
Artemisinin is a sesquiterpene lactone found in Artemisia annua having many medicinal properties. Therefore the factors affecting trichome initiation are important. In the present study, several strategies have been adapted to increase artemisinin production by treating them with nutrients, hormones and elicitors. Abscisic acid, Gibberellic acid (GA3), a combination of GA3+IAA (Gibberellic acid+indole acetic acid), Chitosan, Methyl jasmonate, Acetyl salicylic acid, Lead acetate, sodium chloride, and Nanozime were sprayed on plant at regular intervals. The glandular trichomes of leaves from Artemisia annua (Asteraceae) were examined by light and scanning electron microscopy and the percentage artemisnin content was analyzed by HPTLC. Maximum artemisinin content % and trichome index (0.128) was found when methy jasmonate was applied and minimum artemisinin content % and trichome index was reported in NaCl & acetyl salicylic acid.
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