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Fig. 6 | EvoDevo

Fig. 6

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

Fig. 6

In situ hybridization expression of AfimHEC1. A Longitudinal section of the flowering shoot apex. B Longitudinal section of the floral bud at S3. C-E Longitudinal sections at S5 showing expression in stamens (C, D) and ovary (E). FH Longitudinal section of the floral bud at S7, with expression in the gynostemium (F, G) and ovary during ovule initiation (H). I Transverse section of the gynostemium at S9. J Longitudinal section of the ovary showing the developing ovules at S9. K Detail of a tetrasporangiate anther fused to a stigmatic lobe at S9. L Expression at S9 in preanthesis of the stigmatic epidermis. M Transverse section of the ovary during ovule-to-seed transition. ab, accessory bud; l, leaf; 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, CE, I; 50 μm in B, K, L; 200 μm in FH; 150 μm in J, M. White arrowheads (C) indicate expression in the junction between stamens and stigmatic lobes

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