Subcellular distribution of
PIP2-independent (A) and -dependent (B) PLD activities in
Arabidopsis leaves. The assay conditions for the two types of PLD
activities were as described in Methods. Identical
methods were used to isolate the intracellular fractions from fully
expanded leaves of wild-type (WT) and PLDα antisense Arabidopsis. PM,
Plasma membrane; Chl, chloroplast; Nu, nucleus; IM, intracellular
membrane; CCV, clathrin-coated vesicle; Mito, mitochondria of wild-type
and PLDα antisense plants.