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. 2016 Sep 15;172(3):1625–1642. doi: 10.1104/pp.16.00967

Figure 3.

Figure 3.

Ultrastructure of pollen wall development in wild-type (WT) and atsec31b plants. The tetrads at anther stage 7 (B and F) are high magnifications of the insets in A and E. The microspores of stage 8 (J and N), stage 9 (L and P), stage 10 (R and W), and stage 11 (T and Y) are high magnifications of the insets in I and M, K and O, Q and V, and S and X, respectively. The white arrow and black arrowhead in D and H indicate the primexine (Pe) and distorted primexine-like structure (PeL), respectively. Ba, Baculae; Cytop, cytoplasm; CW, callose wall; Ex, exine; G, Golgi body; In, intine; Mt, mitochondria; Ne, nexine; P, plastid; PM, plasma membrane; ProBa, probaculae; ProTc, protectum; rEx, remnants of exine; rIn, remnants of intine; Tc, tectum; Ty, tryphine; UPM, undulated plasma membrane; Va, vacuole; Ve, vesicle. Bars = 2 μm for A, E, I, M, Q, V, S, and X and 500 nm for the other images.