![]() Plant Cell 7:1583–1598Īmbrose BA, Lerner DR, Ciceri P, Padilla CM, Yanofsky M, Schmidt RJ (2000) Molecular and genetic analysis of the Silky1 gene reveal conservation in floral organ specification between eudicots and monocots. Thus, the spinach C class gene is differentially expressed prior to reproductive organ development and is, at least, correlated with, if not directly involved in, the sexual dimorphism in spinach.Īinsworth C, Crossley S, Buchanan Wollaston V, Thangavelu M, Parker J (1995) Male and female flowers of the dioecious plant sorrel show different patterns of MADS box gene expression. This results in an early gender-specific pattern. However, upon initiation of the first whorl organs, SpAGAMOUS becomes restricted to meristemic regions from which the reproductive primordia will develop. Initial expression of SpAGAMOUS is similar in male and female floral primordia. The spinach gene ( SpAGAMOUS) appears to be exclusively expressed in reproductive tissues and not in vegetative organs. ![]() In comparison with the SLM1 sequence from the related Silene latifolia, amino acid replacements are highly conservative and non-randomly distributed, being predominantly found in hinge regions or on exposed surfaces of helices. The isolated cDNA sequence clusters phylogenetically within the AGAMOUS/FARINELLI C class clade. Given the highly derived floral developmental program in spinach, we wished to characterize a spinach C class floral identity gene and to determine the patterns of sequence evolution as well as compare the spatial and temporal expression patterns with those of AGAMOUS. Development in dioecious cultivated spinach, Spinacia oleracea, is distinguished by the absence of alternative reproductive organ primordia in male and female flowers.
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