Water deficit effect on the accumulation of biomass and artemisinin in annual wormwood(Artemisia annua L., Asteraceae)
By J. A. Marchese, J. Ferreira, V. Rehder, O. Rodrigues. 2010
95 citations recorded by the source corpus.
Despite the importance of Artemisia annua L. as the only source of the anti-parasitic drug artemisinin, little is known on the effects of biotic and abiotic stress on artemisinin accumulation. Water deficit is the most limiting factor on plant growth, however it can trigger secondary metabolite accumulation, depending on the plant growth stage and intensity. A. annua cultivated in growth chambers was submitted to five water deficit treatments (watered, 14, 38, 62 e 86 hours without irrigation). Water deficits of 38 and 62 hours (Yw = -1.39 and -2.51 MPa, respectively) increased leaf artemisinin content, but only 38 hours led to a significant increase in both leaf and plant artemisinin (29%), with no detriment to plant biomass production. The other treatments had no effect on, or decreased artemisinin accumulation. A. annua plants tolerated well water deficit treatments, including the most severe water deficit applied (Yw -3.97 MPa or 86 hs without irrigation) and recovered their turgor pressure after rehydration. These results suggest that moderate water deficit prior to harvesting the crop may not only reduce time and costs in drying the crop, but can also induce artemisinin accumulation, both of which increase crop profit margins. Results also suggest that artemisinin could be part of A. annua chemical system of defense against water deficit.
Subfields: Molecular Biology, Pharmacology, Public Health, Environmental and Occupational Health
View Paper: https://www.semanticscholar.org/paper/468bc24e2aaab681ba6eb872a1cc24be04f46bfa
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Citations in the corpus
- Effect of drought on growth, photosynthesis and total antioxidant capacity of the saharan plant Oudeneya africana (2020, background): “…physiological and biochemical processes, such as membrane integrity, pigment content, osmotic adjustments, water relations, secondary metabolism (Marchese et al., 2010; Chiappero et al., 2019), stomatal closure and, consequently, photosynthetic activity (Praba et al., 2009; Ma et al., 2016;…”