Expression pattern of MFS2. A, Expression of MFS2 in different tissues of rice (vegetative organs are marked in brown; reproductive organs are marked in red). B to I, In situ hybridization in wild-type panicles and spikelets, using a MFS2 antisense probe. B, A young panicle (<0.5-cm length). C and D, Spikelet at Sp1 to Sp2. E and F, Spikelet at Sp4. G and H, Spikelet at Sp6 and Sp7. I, Spikelet at Sp8. fm, Floral meristem; le, lemma; pa, palea; pi, pistil; sl, sterile lemma; *, stamen. Scale bars = 100 μm.