Post-Golgi protein traffic in the plant secretory pathway.
The Golgi apparatus in plants is organized as a multitude of individual stacks that are motile in the cytoplasm and in close association with the endoplasmic reticulum (ER) (Boevink et al. in Plant J 15:441-447, 1998). These stacks operate as a sorting centre for cargo molecules, providing modification and redirection to other organelles as appropriate. In the post-Golgi direction, these include vacuole and plasma membrane, and specialized transport routes to each are required to prevent mislocalization. Recent evidence in plant cells points to the existence of post-Golgi organelles that function as intermediate stations for efficient protein traffic, as well as to the influence of small GTPases such as Rabs and ARFs on post-Golgi trafficking. This review focuses on the latest findings on post-Golgi trafficking routes and on the involvement of GTPases and their effectors on the trafficking of proteins in the plant secretory pathway.
Hanton
Sally L
SL
Department of Biology, 112 Science Place, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada.
Matheson
Loren A
LA
Chatre
Laurent
L
Rossi
Marika
M
Brandizzi
Federica
F
D004705:Endocytosis; D006056:Golgi Apparatus / Q000378:metabolism*; D020559:Monomeric GTP-Binding Proteins / Q000378:metabolism; D059828:Plant Cells; D010944:Plants / Q000201:enzymology / Q000378:metabolism*; D021381:Protein Transport
D020559:Monomeric GTP-Binding Proteins