Exogenous salicylic acid-mediated modulation of arsenic stress tolerance with enhanced accumulation of secondary metabolites and improved size of glandular trichomes in Artemisia annua L.

摘要: The present study was undertaken to find out individual and interactive effects of arsenic (As) salicylic acid (SA) on an important medicinal plant, Artemisia annua. As uptake its accumulation detected found be maximum in roots at higher concentration (150 μM). Under treatments, H2O2 MDA content were induced. Biomass chlorophyll negatively affected under treatments. Furthermore, enzymatic (SOD, CAT, APX, GR) non-enzymatic antioxidants also enhanced Exogenous application SA reduced the extent O2- generation lipid peroxidation, while reverted biomass overcome oxidative stress. Simultaneous with increased endogenous level, artemisinin, dihydroartemisinic as compared treatment pre-application expression four key artemisinin biosynthetic pathway genes, i.e., ADS, CYP71AV1, DBR2, ALDH1 upregulated a plants simultaneously treated As. Similar pattern glandular trichome size observed which attest that has stimulatory impact biosynthesis Our suggests exogenous together induced more tolerance A. annua than comparable dose pre-treatment. may provide platform dual benefits by developing As-tolerant used for phytoremediation from As-contaminated soil obtaining high artemisinin-producing plants.