Fig. 3
Variations in terpenoid profiles among A. annua grown under different LED spectra at 200 ± 10 μmol m−2 s−1 PPFD, 16 h photoperiod, 25.0 ± 0.5 °C and 65.0 ± 1.5% RH. Spectral profiles of light treatments (a) as (W, white LED light (445, 554 nm), B, blue LED light (445 nm) and R, red LED light (660 nm). HCA of artemisinin and artemisinic acid yields (mg plant−1) with growth inhibition (%) of NF54 (b). HCA of relative abundance of terpenoid compounds and antimalarial activity toward P. falciparum NF54 (c). Green color indicates low amounts of compounds and low inhibitory activity in each treatment, whereas those with high amounts or high inhibitory activities are colored red. Shorter branch length indicates a higher similarity between the two datasets. Strongly correlated terpenoids with antimalarial activities are labeled with a red bar