Acta Societatis Botanicorum Poloniae (Jan 2014)

The effect of intracellular calcium level regulators on the synthesis of pollen tube callose in Oenothera biennis L.

  • Elżbieta Bednarska

Journal volume & issue
Vol. 58, no. 2
pp. 199 – 210


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It is shown that callose synthesis in the Oenothera biennis pollen tube is regulated by the endogenous Ca2+ level. Calcium antagonists reduced the amount of callose in the wall above the tip of the pollen tube (Verapamil - calcium channels blocker) and at the tube tip after stopping tube growth (La3+ - a Ca2+ substitute). Ruthenium red and ionophore A 23187, which raise the Ca 21 level in the cytoplasm, induced callose synthesis at the tip of pollen tube.