Fig. 2.

Chloroplast ultrastructure in durum wheat wild type LD222 and chlorophyll-deficient ANDW-7B mutant. A, B A representative chloroplast with an extensive thylakoid system in LD222 (A). Grana stacks and dilated intergrana thylakoids (B). C–E A representative chloroplast in ANDW-7B shows a reduced thylakoid system (C). Detail of single thylakoids, thylakoid overlaps and small grana occurring with some clusters of plastoglobules (D). Examples of irregular grana associated with a plastoglobule cluster (E). A system of tubules and vesicles lays underneath the inner envelope membrane (F)