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Figure 6


Fig. 6. Overexpression of HEC genes in Arabidopsis. (A) Wild-type flower. (B) 35S::HEC1 flower. Ectopic stigmatic tissue on anthers and sepals (arrowhead; inset shows an enlarged view of the region indicated by the lower arrowhead). (C) 35S::HEC2 flower. Ectopic stigmatic tissue on sepals (arrowheads; inset shows an enlarged view of the region indicated by the left arrowhead). (D) 35S::HEC3 flower. Most floral organs have carpelloid tissue (arrowhead). (E) Wild-type fruit (apical). (F) Wild-type fruit (basal). Gynophore is bracketed. (G) 35S::HEC3 fruit. Note the enlarged stigma, reduced ovary and elongated gynophore (bracketed). (H) 35S::HEC1 fruit. Note the enlarged stigma, reduced ovary and elongated gynophore (bracketed). (I) 35S::HEC1 flower. The gynoecium has an enlarged stigma, a reduced ovary and an elongated gynophore. (J) 35S::HEC1 inflorescence. Primary shoot terminates in a stigma. Axillary shoots form carpelloid structures with overproliferation of stigmatic tissue. (K) 35S::HEC3 inflorescence. Flowers transformed into carpelloid stalks capped by stigmas. (L) 35S::HEC1 inflorescence. No floral development. Scale bars: 400 µm.