Plant organelle positioning.

Correct positioning and active movement of organelles within cells are essential for cellular homeostasis and adaptation to external stresses. Unlike animal and fungal systems, plant organelle positioning has not yet been revealed at the molecular level. The recent development of organelle-targeting green fluorescent protein (GFP) constructs and genetic analyses using Arabidopsis thaliana have shed new light on the field of plant organelle positioning, which has been found to be regulated by mechanisms that are similar to and/or distinct from those used by animals and fungi.