Interactions Between Compartments in Acetabularia During Gene Expression

Eukaryotic cells are provided with more than one gene expression system. In plant cells, and that is true also for algal cells, we deal with three systems which are subjected to a pronounced compartmentation. The first is the Eukaryote-characteristic, nucleo-cytosol compartment. This in itself is divided by the nuclear envelope which separates the nucleus and the cytosol. In addition to the nucleo-cytosol compartment plant cells dispose of the chloroplasts and also of mitochondria. In the following some experiments will be discussed which illustrate the interactions between the cytoplasm and the nucleus.