Počet záznamů: 1

Endogenous cytokinins, auxins, and abscisic acid in red algae from Brazil

  1. 1.
    0359279 - UEB-Q 2011 RIV US eng J - Článek v odborném periodiku
    Yokoya, N. S. - Stirk, W. A. - van Staden, J. - Novák, Ondřej - Turečková, Veronika - Pěnčík, Aleš - Strnad, Miroslav
    Endogenous cytokinins, auxins, and abscisic acid in red algae from Brazil.
    Journal of Phycology. Roč. 46, č. 6 (2010), s. 1198-1205 ISSN 0022-3646
    Grant CEP: GA ČR GA301/08/1649
    Výzkumný záměr: CEZ:AV0Z50380511
    Klíčová slova: ENDOGENOUS * CYTOKININS * AUXINS * ABSCISIC ACID * RED * ALGAE * BRAZIL
    Kód oboru RIV: EF - Botanika
    Impakt faktor: 2.239, rok: 2010

    Endogenous cytokinins (CKs), auxins, and abscisic acid (ABA) were identified and quantified in 11 red algae collected from the Brazilian coast. Seaweed materials were extracted, purified by solid-phase extraction followed by immunoaffinity chromatography, and analyzed by liquid chromatography-tandem mass spectrometry. Isoprenoid CKs were detected in all species, aromatic CKs were not detected in any of the samples. The CK profile of Chondracanthus teedei (Mert. ex Roth) Kütz. was distinct in comparison to other species with para-topolin derivatives detected in low concentrations. The main auxins present in all species were free indole-3-acetic acid and indole-3-acetamide. ABA was present in all species analyzed except for Hypnea nigrescens Grev. ex J. Agardh. No ABA conjugates were detected in any species. These results confirm that plant hormones were common constituents in red seaweeds, with this being the first report of the occurrence of ABA in Rhodophyta.
    Trvalý link: http://hdl.handle.net/11104/0197090