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Fig. 4 | EvoDevo

Fig. 4

From: Expression of gynoecium patterning transcription factors in Aristolochia fimbriata (Aristolochiaceae) and their contribution to gynostemium development

Fig. 4

In situ hybridization expression of AfimSPT. A Flowering shoot apex in longitudinal section. BD Successive stages S3–S4 showing initiation of the ovary and stamens. E, F Longitudinal section of the gynostemium (E) and transverse section of the ovary (F) at S4. GI Flower at S5 with details of the gynostemium with fused stigmatic lobes and anthers (H) and ovary in transverse section prior to ovule formation (I). J, K Details of the gynostemium at S7 with the growing stigmas above the anthers (J) and ovule differentiation (K). L, M Transverse section of the gynostemium at S9 showing the detail of the fused anthers and stigmas, and the expression at the endothecium, the midvein and the stigmatic epidermis. ab, accessory bud; l, leaf; e, endothecium; ep, stigmatic epidermis; mv, midvein of median carpel; o, ovule; ov, ovary; p, perianth. Arrow points to the shoot apical meristem; arrowheads point to stamens or stamen primordia; asterisks (*) point to stigmatic lobes. Floral stages S1–S9 as in Figs. 2 and 3. Scale bars: 100 μm in A, C, F, JM; 50 μm in B, E; 150 μm in D; 200 μm in GI)

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