Počet záznamů: 1  

Changes in nonpolar aldehydes in bean cotyledons during ageing

    1.
    SYSNO ASEP0079980
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JOstatní články
    NázevChanges in nonpolar aldehydes in bean cotyledons during ageing
    Překlad názvuZměny v nepolárních aldehydech v děložních listech fazolu během stárnutí
    Tvůrce(i) Wilhelmová, Naděžda (UEB-Q) RID, ORCID
    Domingues, P. (PT)
    Srbová, M. (CZ)
    Fuksová, H. (CZ)
    Wilhelm, J. (CZ)
    Zdroj.dok.Biologia Plantarum. - : Ústav experimentální botaniky AV ČR, v. v. i. - ISSN 0006-3134
    Roč. 50, č. 4 (2006), s. 559-564
    Poč.str.6 s.
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovaAgeing ; aldehydes ; lipid peroxidation ; lipofuscin-like pigments (LFP)
    Vědní obor RIVCE - Biochemie
    CEPGA522/03/0312 GA ČR - Grantová agentura ČR
    CEZAV0Z50380511 - UEB-Q (2005-2011)
    AnotaceAgeing of plant organs is accompanied by an increased production of free radicals what results in membrane lipid peroxidation. Non-polar aldehydes originating from this process interact with the cellular material to form the fluorescent end-products, lipofuscin-like pigments (LFP). Their formation was studied both qualitatively and quantitatively in ageing of bean cotyledons. The concentration of lipofuscin-like pigments increased 9-fold in 14-d-old (senescent) cotyledons in relation to 8-d-old (young) cotyledons. HPLC fractionation patterns indicate changes in their composition during ageing. The LFP increase in old cotyledons was accompanied by elevated levels of non-polar aldehydes that increased during ageing to 167 %. The composition of aldehydes was studied by mass spectrometry. The most abundant fraction in both young and old cotyledon was represented by C12 aldehydes, which comprised both saturated and unsaturated species. We have observed differences in abundances of individual aldehydes between the young and the old cotyledons that might explain the differences in the composition of lipofuscin-like pigments. These results support the involvement of free radicals in plant ageing; however, it is suggested that plant aldehydic products of lipid peroxidation differ from those found in animals.
    PracovištěÚstav experimentální botaniky
    KontaktDavid Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469
    Rok sběru2007
Počet záznamů: 1  

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