Figure 5.

Ultrastructural analysis of Chlamydomonas cells treated with cerulenin. A and B, Electron microcopy images from Chlamydomonas cells growing in the absence (A) or presence (B) of 10 μm cerulenin for 8 h. C, Chloroplast; N, nucleus; P, pyrenoid; S, starch granule. C and D, Enlargement of A and B showing thylakoid membranes of untreated cells (C) and cerulenin-treated cells (D), respectively. Red arrowheads indicate groups of hyperstacked thylakoids in cerulenin-stressed cells (D). Dashed-line boxes in A and B show the enlarged areas in C and D, respectively. Bars = 2 µm (A), 1 µm (B), and 500 nm (C and D).