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Development, Vol 126, Issue 12 2715-2726, Copyright © 1999 by Company of Biologists
JOURNAL ARTICLES |
Q Chen, A Atkinson, D Otsuga, T Christensen, L Reynolds and GN Drews
Department of Biology, University of Utah, Salt Lake City, UT 84112, USA.
A screen for mutations affecting flower formation was carried out and several filamentous flower (fil) alleles were identified. In fil mutants, floral primordia occasionally give rise to pedicels lacking flowers at their ends. This defect is dramatically enhanced in fil rev double mutants, in which every floral primordium produces a flowerless pedicel. These data suggest that the FIL and REV genes are required for an early step of flower formation, possibly for the establishment of a flower-forming domain within the floral primordium. The FIL gene is also required for establishment of floral meristem identity and for flower development. During flower development, the FIL gene is required for floral organ formation in terms of the correct numbers and positions; correct spatial activity of the AGAMOUS, APETALA3, PISTILLATA and SUPERMAN genes; and floral organ development.
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