Počet záznamů: 1

Nebularine Affects Plant Growth and Development but does not Interfere with Cytokinin Signaling

  1. 1.
    0337568 - UEB-Q 2010 RIV US eng J - Článek v odborném periodiku
    Pospíšilová, H. - Nisler, Jaroslav - Spíchal, Lukáš - Frébort, Ivo
    Nebularine Affects Plant Growth and Development but does not Interfere with Cytokinin Signaling.
    Journal of Plant Growth Regulation. Roč. 28, č. 4 (2009), s. 321-330 ISSN 0721-7595
    Grant CEP: GA ČR(CZ) GA522/06/0022; GA ČR GD522/08/H003; GA ČR(CZ) GP522/07/P197
    Výzkumný záměr: CEZ:AV0Z50380511
    Klíčová slova: Anticytokinin * Arabidopsis thaliana * Cytokinin receptor
    Kód oboru RIV: EB - Genetika a molekulární biologie
    Impakt faktor: 2.438, rok: 2009

    Nebularine is known for its high cytotoxicity in animals, whereas in plants it was originally believed to be an anticytokinin. In this study we show that in classical cytokinin bioassays, nebularine antagonized cytokinin function in senescence and callus biotests but not in the Amaranthus bioassay. Nebularine reversed the inhibitory effect of cytokinin on lateral root formation in Arabidopsis seedlings, and when applied alone caused increased lateral root formation and shortening of the main root. Systematic spraying of Arabidopsis plants with nebularine led to yellowing and formation of purple pigments, local drying, and withering, although younger plants showed a greater resilience. Comparison of nebularine cytotoxicity in plant and animal cells showed that the growth of tobacco BY-2 cells was inhibited with only about tenfold lower efficacy than mammalian cell lines.
    Trvalý link: http://hdl.handle.net/11104/0181531