Effect of clone selection, nitrogen supply, leaf damage and mycorrhizal fungi on stilbene and emodin production in knotweed

0369513 - BÚ 2012 RIV GB eng J - Journal Article
Kovářová, Marcela - Frantík, Tomáš - Koblihová, Helena - Bartůňková, Kristýna - Nývltová, Z. - Vosátka, Miroslav
Effect of clone selection, nitrogen supply, leaf damage and mycorrhizal fungi on stilbene and emodin production in knotweed.
BMC Plant Biology. Roč. 11, č. 98 (2011), s. 1-14. ISSN 1471-2229. E-ISSN 1471-2229
R&D Projects: GA MPO FT-TA3/008; GA MŠMT 1M0571
Institutional research plan: CEZ:AV0Z60050516
Keywords : knotweed * stilbenes * leaf damage
Subject RIV: EF - Botanics
Impact factor: 3.447, year: 2011

Two-year pot experiment with F. japonica, F. sachalinensis and two F. xbohemica clones.The fast-spreading hybrid clones store less nitrogen in their rhizomes than the parental species. The highest concentrations of stilbenes were found in the rhizomes of F. japonica. However, because of the high belowground biomass of one clone of F. xbohemica, this hybrid produced more stilbenes per plant than F. japonica. Leaf damage increased the resveratrol and emodin contents in the rhizomes of the non-inoculated knotweed plants. Although knotweed is supposed to be a nonmycorrhizal species, inoculation with mycorrhizal fungi resulted in up to 2% root colonisation. Both leaf damage and inoculation with mycorrhizal fungi (only in the absence of leaf damage) elicited an increase of the piceid content in the rhizomes of F. japonica. Because the leaf damage suppressed the effect of the root fungi, the effect of leaf damage prevailed over the effect of the mycorrhizal fungi on the piceid content.
Permanent Link: http://hdl.handle.net/11104/0203560