THE INFLUENCE OF SPERMINE ON THE IN SITU EXPRESSION OF A PROTEIN KINASE ASSOCIATED WITH SENESCENCE IN MARCHANTIA POLYMORPHA THALLI.

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Author(s): Smith, Matthew A.¹; Maravolo, Nicholas C.¹
Source:
International Journal of Plant Sciences. Sep2004, Vol. 165 Issue 5, p745-751. 7p.
Subject Terms:
*Marchantia; *Marchantiaceae; *Spermine; *Fluorescein; *Fluorescence microscopy; *Chloroplasts; *Plant cells & tissues

Additional Information
- Abstract:
  Fluorescein-conjugated bisindolylmaleimide inhibitor (FIM-1) was used to identify protein kinase C (PKC) presence and activity in Marchantia polymorpha thalli. Fluorescence microscopy showed that PKC activity occurred in the membranes of parenchymous and chloroplast-containing cells. PKC activity increased with distance from the thallus apex in untreated tissue. Spermine-treated tissue displayed significantly higher levels of PKC activity in comparison with untreated tissue, and PKC activity decreased with distance from the apex of the thallus. [ABSTRACT FROM AUTHOR]