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Aluminium ions inhibit the formation of diacylglycerol generated by phosphatidylcholine-hydrolysing phospholipase C in tobacco cells

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    0349924 - UEB-Q 2011 RIV GB eng J - Článek v odborném periodiku
    Pejchar, Přemysl - Potocký, Martin - Novotná, Z. - Veselková, Štěpánka - Kocourková, Daniela - Valentová, O. - Schwarzerová, K. - Martinec, Jan
    Aluminium ions inhibit the formation of diacylglycerol generated by phosphatidylcholine-hydrolysing phospholipase C in tobacco cells.
    New Phytologist. Roč. 188, č. 1 (2010), s. 150-160 ISSN 0028-646X
    Grant CEP: GA ČR GA522/07/1614
    Výzkumný záměr: CEZ:AV0Z50380511
    Klíčová slova: aluminium (AL) * BY-2 * diacylglycerol (DAG)
    Kód oboru RIV: ED - Fyziologie
    Impakt faktor: 6.516, rok: 2010

    Aluminium ions (Al) have been recognized as a major toxic factor for crop production in acidic soils. This study aimed to assess the impact of Al on the activity of phosphatidylcholine-hydrolysing phospholipase C (PC-PLC), a new member of the plant phospholipase family.We labelled the tobacco cell line BY-2 and pollen tubes with a fluorescent derivative of phosphatidylcholine and assayed for patterns of fluorescently labelled products. Growth of pollen tubes was analysed.We observed a significant decrease of labelled diacylglycerol (DAG) in cells treated with AlCl3. Investigation of possible metabolic pathways that control DAG generation and consumption during the response to Al showed that DAG originated from the reaction catalysed by PC-PLC. The growth of pollen tubes was retarded in the presence of Al and this effect was accompanied by the decrease of labelled DAG similar to the case of the BY-2 cell line. The growth of pollen tubes arrested by Al was rescued by externally added DAG.
    Trvalý link: http://hdl.handle.net/11104/0190046
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