Effect of water deficit on biomass production and accumulation of secondary metabolites in roots of Glycyrrhiza uralensis

被引：55

作者：

Li, W. D. ^{[1
,2
]}

Hou, J. L. ^{[1
,2
]}

Wang, W. Q. ^{[1
,2
]}

Tang, X. M. ^{[1
,2
]}

Liu, C. L. ^{[3
]}

Xing, D. ^{[1
,2
]}

机构：

[1] Beijing Univ Chinese Med, Sch Chinese Pharm, Beijing 100102, Peoples R China

[2] Engn Res Ctr Good Agr Practice Chinese Crude Drug, Beijing, Peoples R China

[3] Capital Med Univ, Sch Tradit Chinese Med, Beijing, Peoples R China

来源：

RUSSIAN JOURNAL OF PLANT PHYSIOLOGY | 2011年 / 58卷 / 03期

关键词：

Glycyrrhiza uralensis; biomass production; gas exchange; glycyrrhizic acid; liquiritin; water deficit; DROUGHT STRESS; GROWTH; RESPONSES; IMPACT;

D O I：

10.1134/S1021443711030101

中图分类号：

Q94 [植物学];

学科分类号：

071001 [植物学];

摘要：

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.

引用

页码：538 / 542

页数：5

共 16 条

[1]

Impact of water supply on photosynthesis, water use and carbon isotope discrimination of sugar beet genotypes [J].