Electrical perception of the 'death message' in Chara: characterization of K+ -induced depolarization.

نویسنده

  • Teruo Shimmen
چکیده

When the nodal end of an internodal cell of Chara corallina was subjected to a pulse treatment with artificial cell sap, a depolarization lasted in artificial pond water. This depolarization could also be induced by pulse treatment with KCl solution, indicating that K+ in the artificial cell sap is responsible (K+ -induced depolarization). The depolarization was prolonged in the presence of 2 mM KCl and the prolonged depolarization was terminated by supplementing with either CaCl2, MgCl2 or NaCl. These results supported the hypothesis that K+ released from the killed cell is responsible for generation of the wound-induced membrane depolarization.

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عنوان ژورنال:
  • Plant & cell physiology

دوره 47 4  شماره 

صفحات  -

تاریخ انتشار 2006