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- Title
Effect of water deficit on biomass production and accumulation of secondary metabolites in roots of Glycyrrhiza uralensis.
- Authors
Li, W.; Hou, J.; Wang, W.; Tang, X.; Liu, C.; Xing, D.
- Abstract
Two-year-old seedlings of licorice plant ( Glycyrrhiza uralensis Fisch) were exposed to three degrees of water deficit, namely weak (60-70%), moderate (40-50%), and strong (20-30%) relative water content in soil, whereas control plants were grown in soil with 80-90% water content. Moderate and strong water deficit decreased the net photosynthetic rate, stomatal conductance, and biomass production. Water use efficiency and the root-to-shoot ratio increased significantly in response to water deficit, indicating a high tolerance to drought. Weak water deficit did not decrease root biomass production, but significantly increased the production of glycyrrhizic acid (by 89%) and liquiritin (by 125%) in the roots. Therefore, a weak water deficit can increase the yield of root medical compounds without negative effect on root growth.
- Subjects
PLANT-water relationships; BIOMASS production; PLANT metabolites; GLYCYRRHIZA uralensis; PLANT roots; GAS exchange in plants; LICORICE (Plant)
- Publication
Russian Journal of Plant Physiology, 2011, Vol 58, Issue 3, p538
- ISSN
1021-4437
- Publication type
Article
- DOI
10.1134/S1021443711030101