Počet záznamů: 1

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

  1. 1.
    0369513 - BU-J 2012 RIV GB eng J - Článek v odborném periodiku
    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
    Grant CEP: GA MPO FT-TA3/008; GA MŠk 1M0571
    Výzkumný záměr: CEZ:AV0Z60050516
    Klíčová slova: knotweed * stilbenes * leaf damage
    Kód oboru RIV: EF - Botanika
    Impakt faktor: 3.447, rok: 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.
    Trvalý link: http://hdl.handle.net/11104/0203560