Production of medically valuable stilbenes and emodin in knotweed

0398111 - BÚ 2014 RIV NL eng J - Journal Article
Frantík, Tomáš - Kovářová, M. - Koblihová, Helena - Bartůňková, Kristýna - Nývltová, Z. - Vosátka, Miroslav
Production of medically valuable stilbenes and emodin in knotweed.
Industrial Crops and Products. Roč. 50, oct.2013 (2013), s. 237-243. ISSN 0926-6690. E-ISSN 1872-633X
R&D Projects: GA MŠMT 1M0571
Institutional support: RVO:67985939
Keywords : knokweed * resveratrol * emodin
Subject RIV: EF - Botanics
Impact factor: 3.208, year: 2013

Most people consider knotweeds to be dangerous, invasive weeds. These plants produce useful secondary metabolites, stilbenes and emodin. We conducted a 3-yr field experiment with two parental species Fallopia japonica and F. sachalinensis, and three clones of their hybrid, F. x bohemica. Knotweed biomass and resveratrol, resveratroloside, piceid and emodin contents were assessed three times per year. Their biomasses (in descending order) are as follows: the two hexaploid hybrid clones, the octoploid hybrid clone, and the two parental clones. Although more energy is needed to harvest rhizomes and roots from knotweed, these produce more resveratrol, piceid and emodin than shoots. Out of the five clones tested, F. japonica contained the greatest amounts of resveratrol, resveratroloside, piceid and emodin, in its belowground biomass. The optimal harvest of rhizomes and roots from productive clones was in the autumn of the second year of cultivation.
Permanent Link: http://hdl.handle.net/11104/0225652