Počet záznamů: 1

Cell-wall polysaccharides play an important role in decay resistance of Sphagnum and actively depressed decomposition in vitro

  1. 1.
    0364356 - BU-J 2012 RIV NL eng J - Článek v odborném periodiku
    Hájek, Tomáš - Ballance, S. - Limpens, J. - Zijlstra, M. - Verhoeven, J. T. A.
    Cell-wall polysaccharides play an important role in decay resistance of Sphagnum and actively depressed decomposition in vitro.
    Biogeochemistry. Roč. 103, 1-3 (2011), 45-57 ISSN 0168-2563
    Grant CEP: GA AV ČR KJB600050503
    Výzkumný záměr: CEZ:AV0Z60050516
    Klíčová slova: litter chemistry * lichens * peatlands
    Kód oboru RIV: EF - Botanika
    Impakt faktor: 3.069, rok: 2011

    Removing polymeric lignin-like phenolics from cell walls had only negligible effects on carbon (C) mineralization of Sphagnum litter, but increased mineralization of two other bryophyte genera, suggesting a minor role of these phenolics in decay resistance of Sphagnum but a major role of cell-wall polysaccharides. Isolated pectinous polysaccharides did not serve as C-source for microbial respiration but inhibited C and N mineralization instead, reminiscent of the effects reported for phenolics in other ecosystems. Our results emphasize the role of polysaccharides in resistance to, and active inhibition of, microbial mineralization in Sphagnum-dominated litter.
    Trvalý link: http://hdl.handle.net/11104/0199860