As plant Golgi bodies move through the cell along the actin cytoskeleton, they face the need to maintain their polarized stack structure whilst receiving, processing and distributing protein cargo destined for secretion. Structural proteins, or Golgi matrix proteins, help to hold cisternae together and tethering factors direct cargo carriers to the correct target membranes. This review focuses on golgins, a protein family containing long coiled-coil regions, summarises their known functions in animal cells and highlights recent findings about plant golgins and their putative roles in the plant secretory pathway.
Osterrieder, A. (2012) Tales of tethers and tentacles: golgins in plants. Journal of Microscopy, doi: 10.1111/j.1365-2818.2012.03620.x
QTLs for seed yield under different P supply
Low levels of phosphorous in soils seriously limit seed production of Brassica napus. Ding et al. investigate phenotypic variation of seed yield and yield-related traits in B. napus plants grown with contrasting supplies of P, and identify a total of 74 putative quantitative trait loci (QTLs). The results suggest that different genetic determinants are involved in controlling yield and yield-related traits under normal and low P conditions, and the QTLs detected under reduced P supply may prove useful in marker-assisted selection.