Spectral quality and UV-B stress stimulate glycyrrhizin concentration of Glycyrrhiza uralensis in hydroponic and pot system
Identifieur interne : 004D61 ( Main/Exploration ); précédent : 004D60; suivant : 004D62Spectral quality and UV-B stress stimulate glycyrrhizin concentration of Glycyrrhiza uralensis in hydroponic and pot system
Auteurs : Fawzia Afreen [Japon] ; S. M. A. Zobayed [Japon] ; Toyoki Kozai [Japon]Source :
- Plant physiology and biochemistry : (Paris) [ 0981-9428 ] ; 2005.
Descripteurs français
- KwdFr :
- Acide glycyrrhizique (métabolisme), Culture hydroponique, Environnement contrôlé, Feuilles de plante (croissance et développement), Feuilles de plante (effets des radiations), Feuilles de plante (physiologie), Glycyrrhiza uralensis (croissance et développement), Glycyrrhiza uralensis (effets des radiations), Glycyrrhiza uralensis (physiologie), Photosynthèse, Racines de plante (croissance et développement), Racines de plante (effets des radiations), Racines de plante (physiologie), Rayons ultraviolets.
- MESH :
- croissance et développement : Feuilles de plante, Glycyrrhiza uralensis, Racines de plante.
- effets des radiations : Feuilles de plante, Glycyrrhiza uralensis, Racines de plante.
- métabolisme : Acide glycyrrhizique.
- physiologie : Feuilles de plante, Glycyrrhiza uralensis, Racines de plante.
- Pascal (Inist)
English descriptors
- KwdEn :
- Carbon dioxide, Environment, Controlled, Glycyrrhiza uralensis (growth & development), Glycyrrhiza uralensis (physiology), Glycyrrhiza uralensis (radiation effects), Glycyrrhizic Acid (metabolism), Hydroponics, Photosynthesis, Plant Leaves (growth & development), Plant Leaves (physiology), Plant Leaves (radiation effects), Plant Roots (growth & development), Plant Roots (physiology), Plant Roots (radiation effects), Plant leaf, Replication, Root, Stress, UVB radiation, Ultraviolet Rays.
- MESH :
- chemical , metabolism : Glycyrrhizic Acid.
- growth & development : Glycyrrhiza uralensis, Plant Leaves, Plant Roots.
- physiology : Glycyrrhiza uralensis, Plant Leaves, Plant Roots.
- radiation effects : Glycyrrhiza uralensis, Plant Leaves, Plant Roots.
- Environment, Controlled, Hydroponics, Photosynthesis, Ultraviolet Rays.
Abstract
Glycyrrhizin, the major bioactive component of Glycyrrhiza uralensis, is widely used as a natural sweetener. Recently glycyrrhizin has been shown to have anti-tumor activity, highly active in inhibiting replication of HIV-1 and SARS-associated virus and exhibits a number of pharmacological effects. The principle objective of the current study was to evaluate the effects of different spectral quality including red, blue, white and UV-B radiation on the production of glycyrrhizin, in a controlled environment. Plants were grown under artificial lights with elevated CO2 concentration and both the pot and hydroponic plants were assigned to red and blue light treatments and those grown under white fluorescent lamps were used as control. In a separate experiment, pot plants were exposed to ultraviolet (UV)-B radiation (wavelength: 280-315 nm). The net photosynthetic rates (NPR) of the leaves reduced significantly immediately after exposure to the high intensity UV-B radiation (3 days at 1. 13 W m-2). In case of the low intensity UV-B radiation (15 days at 0.43 W m-2), NPR was also reduced, but the rate of reduction was significantly slower than that of the high intensity treatment. The concentrations of glycyrrhizin quantified in the root tissues were highest in the plants grown under red light in both hydroponic and pot systems and the concentration increased linearly from 1- to 3-month-old pot plants. Both the low and high intensity of UV-B exposure increased the concentration of glycyrrhizin in the root tissues of 3-month-old pot plants, the values being nearly X1.5 those of the control. The results also indicate that the glycyrrhizin concentrations of 3-6 months old pot plants were similar or even higher than the previously reported values for 3-4 years old field-grown plants and confirm that high concentration of glycyrrhizin production is possible within a very short production period under controlled environments.
Affiliations:
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Le document en format XML
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<term>Environment, Controlled</term>
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<term>Glycyrrhiza uralensis (physiology)</term>
<term>Glycyrrhiza uralensis (radiation effects)</term>
<term>Glycyrrhizic Acid (metabolism)</term>
<term>Hydroponics</term>
<term>Photosynthesis</term>
<term>Plant Leaves (growth & development)</term>
<term>Plant Leaves (physiology)</term>
<term>Plant Leaves (radiation effects)</term>
<term>Plant Roots (growth & development)</term>
<term>Plant Roots (physiology)</term>
<term>Plant Roots (radiation effects)</term>
<term>Plant leaf</term>
<term>Replication</term>
<term>Root</term>
<term>Stress</term>
<term>UVB radiation</term>
<term>Ultraviolet Rays</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Acide glycyrrhizique (métabolisme)</term>
<term>Culture hydroponique</term>
<term>Environnement contrôlé</term>
<term>Feuilles de plante (croissance et développement)</term>
<term>Feuilles de plante (effets des radiations)</term>
<term>Feuilles de plante (physiologie)</term>
<term>Glycyrrhiza uralensis (croissance et développement)</term>
<term>Glycyrrhiza uralensis (effets des radiations)</term>
<term>Glycyrrhiza uralensis (physiologie)</term>
<term>Photosynthèse</term>
<term>Racines de plante (croissance et développement)</term>
<term>Racines de plante (effets des radiations)</term>
<term>Racines de plante (physiologie)</term>
<term>Rayons ultraviolets</term>
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<term>Glycyrrhiza uralensis</term>
<term>Racines de plante</term>
</keywords>
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<term>Glycyrrhiza uralensis</term>
<term>Racines de plante</term>
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<front><div type="abstract" xml:lang="en">Glycyrrhizin, the major bioactive component of Glycyrrhiza uralensis, is widely used as a natural sweetener. Recently glycyrrhizin has been shown to have anti-tumor activity, highly active in inhibiting replication of HIV-1 and SARS-associated virus and exhibits a number of pharmacological effects. The principle objective of the current study was to evaluate the effects of different spectral quality including red, blue, white and UV-B radiation on the production of glycyrrhizin, in a controlled environment. Plants were grown under artificial lights with elevated CO<sub>2</sub>
concentration and both the pot and hydroponic plants were assigned to red and blue light treatments and those grown under white fluorescent lamps were used as control. In a separate experiment, pot plants were exposed to ultraviolet (UV)-B radiation (wavelength: 280-315 nm). The net photosynthetic rates (NPR) of the leaves reduced significantly immediately after exposure to the high intensity UV-B radiation (3 days at 1. 13 W m<sup>-2</sup>
). In case of the low intensity UV-B radiation (15 days at 0.43 W m<sup>-2</sup>
), NPR was also reduced, but the rate of reduction was significantly slower than that of the high intensity treatment. The concentrations of glycyrrhizin quantified in the root tissues were highest in the plants grown under red light in both hydroponic and pot systems and the concentration increased linearly from 1- to 3-month-old pot plants. Both the low and high intensity of UV-B exposure increased the concentration of glycyrrhizin in the root tissues of 3-month-old pot plants, the values being nearly X1.5 those of the control. The results also indicate that the glycyrrhizin concentrations of 3-6 months old pot plants were similar or even higher than the previously reported values for 3-4 years old field-grown plants and confirm that high concentration of glycyrrhizin production is possible within a very short production period under controlled environments.</div>
</front>
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