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Fig. 1. seu-3 modifies ett-7 in all floral whorls. (A-E) Top-down
views. (F-J) Side views. (A) Wild-type flower showing four evenly spaced
petals, six stamens and the stigma at the top of the central gynoecium. (B)
seu-3 flower showing smaller, narrower petals, shorter stamens and a
split gynoecium. (C) Close up of seu-3 gynoecium in B showing two
balls of stigmatic tissue and two splayed valve tips. (D) ett-7
flower showing five petals, six stamens and a wide stigma resulting from
overproliferation of apical tissues. (E) ett-7 seu-3 flower showing
one very narrow petal (arrow), one stamen (arrowhead) and a round stigma. (F)
Wild-type flower showing two full ovaries, with arrows delimiting top and
bottom of the right valve. (G) seu-3 flower showing smaller petals
and shorter pollenless stamens. Ovaries are full length, but the unfused
distal gynoecium results in a horn-like protrusion (arrow) and an exposed
ovule (arrowhead). (H) ett-7 gynoecium has only one reduced ovary
(arrows at valve boundaries), with the distal gynoecium appearing Y-shaped
from basalized stigmatic and stylar tissue (arrowhead). (I) ett-7
seu-3 flower showing reduced filamentous sepals and petals (arrowhead and
arrow, respectively), few stamens and a stalk-like gynoecium. (J) ett-7
seu-3 flower showing one normal stamen, one stamen fused along its entire
length with the gynoecium (arrowheads) and one valve that is open at the top
(arrow). Genotypes described are in Col. Scale bars: 1 mm.
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