Počet záznamů: 1

Content of carotenoids during ageing and senescence of tobacco leaves with genetically modulated life-span

  1. 1.
    0335871 - UEB-Q 2010 RIV CZ eng J - Článek v odborném periodiku
    Procházková, Dagmar - Haisel, Daniel - Wilhelmová, Naděžda
    Content of carotenoids during ageing and senescence of tobacco leaves with genetically modulated life-span.
    Photosynthetica. Roč. 47, č. 3 (2009), s. 409-413 ISSN 0300-3604
    Grant CEP: GA ČR GP522/05/P558
    Výzkumný záměr: CEZ:AV0Z50380511
    Klíčová slova: cytokinin * reactive oxygen species * xanthophylls
    Kód oboru RIV: ED - Fyziologie
    Impakt faktor: 1.072, rok: 2009

    We exploited leaves of tobacco (Nicotiana tabacum L., cv. Wisconsin 38) with introduced chimeric construct consisting of SAG12 promoter fused with ipt gene for cytokinin synthesis and therefore prolonged life-span. As a control we used its wild type. In 12-week-old plants, the first leaves of control plants showed senescence symptoms at the time of sampling. Carotenoid content decreased with increasing leaf age both in control and in transgenic plants. On the other hand, the first leaves of transgenic plants demonstrated better antioxidant capacity represented by carotenoids compared to the leaves of control plants of the same age. They stayed still green at this age.
    Trvalý link: http://hdl.handle.net/11104/0180224