The fruit and stems of nev flowers also show membrane
trafficking defects. (A-C,E-H) Transmission electron micrographs of cells
in the fruit wall and pedicel (stem) of wild-type and nev flowers
(stage 16). (A-C) Circularized multilamellar structures are enriched in
nev fruit and stem cells (C,D) by comparison with the linear Golgi
cisternae of wild-type cells (A,D). Rarely, Golgi cisternae with a curved
appearance were observed in wild-type cells (B,D). Vesicular structures
resembling the TGN of wild-type cells (A) are often observed in the vicinity
or inside the multilamellar structures of nev cells (C, arrow) (73%,
n=15). (D) Frequency of Golgi with a wild-type appearance (G,
purple) and circularized multilamellar structures (CG, blue) per cell in
sections of nev and wild-type sepal AZ regions, fruit walls and
pedicels. For each type of tissue analyzed, n (cells) ≥15.
Statistical differences between nev and wild-type tissues are
indicated by asterisks (Fisher's exact test, P<0.0001).
(E-H) Large paramural bodies are found in nev fruit (F) and
stem (H) cells. Paramural vesicles and paramural bodies were also observed in
wild-type fruit (E) and stem (G) cells. cg, circularized multilamellar
structures; g, Golgi cisternae; pmb, paramural body; pv, paramural vesicles;
t, TGN. Scale bars: 0.5 μm.