Details

Autor(en) / Beteiligte

• Robinson, David G.
• Kristen, Udo

Titel

Membrane Flow via the Golgi Apparatus of Higher Plant Cells

Ist Teil von

• International Review of Cytology, 1982, Vol.77, p.89-127

Ort / Verlag

Elsevier Science & Technology

Erscheinungsjahr

1982

Link zum Volltext

Beschreibungen/Notizen

• This chapter discusses the membrane flow via the Golgi apparatus (GA) of higher plant cells. GA plays a significant role in membrane flow processes, as a large part of the intracellular transport of macromolecules takes place via dictyosomes. Therefore, the membranes of the GA are considered as packing material and transportation vehicles for the transfer of polysaccharides and proteins from their sites of synthesis to the plasma membrane (PM). The transfer processes constitute a membrane flow beginning at the GA or, when starting at the endoplasmic reticulum (ER), via the GA. Membrane transfer from the ER to the PM via the GA can be divided into three different phases. Those three phases are, (1) beginning at the ER and ending at the forming faces of the dictyosomes; (2) comprising the flow through the cisternal stack of the dictyosomes, and (3) extention from the maturing faces of the dictyosomes to the PM. The velocity of granulocrine secretion involves measurements based on the use of content markers; measurements based on membrane markers; and calculations derived from a morphometric analysis of thin sections. The recycling of membrane from the PM is a necessary consequence of granulocrine secretion.