Summary
Homeotic mutants have been used to define the genetic interactions controlling flowering in Antirrhinum. Three categories of homeotic genes were identified by transposon mutagenesis. The first includes floricaula (flo), which is required to switch inflorescence meristems to floral. This gene has been isolated and shown to be expressed transiently in bract, sepal, petal and carpel primordia. The second group of genes controls the identity (and sometimes the number) of organs in a whorl. These genes affect overlapping whorls and their mutant phenotypes suggest a combinatorial model for gene action in determining the fate of floral primordia. Genes of the third category determine the identity of organs within one whorl and thus affect the symmetry of the flower. We propose that the interactions of these homeotic genes not only control the basic patterns of inflorescence and flower development in Antirrhinum, but possibly in a diverse range of plant species.
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References
Awasthi DK, Kumar V and Murty YS. (1984) Flower development in Antirrhinum majus L.(Scrophulariaceae) with a comment upon corolla tube formation.Bot.Mag.Tokoyo 97: 13–22.
Bowman JL, Smyth DR and Meyerowitz EM. (1989) Genes directing flower development in Arabidopsis. Plant Cell 1; 37–52.
Carpenter R and Coen ES. (1990) Floral homeotic mutations produced by transposon-mutagenesis in Antirrhinum majus. Genes Dev. 4; 1483–1493.
Carpenter R, Martin CR and Coen ES. (1987) Comparison of genetic behaviour of the transposable element Tam3 at two unlinked pigment loci in Antirrhinum majus.Mol.Gen.Genet. 207; 82–89.
Coen ES, Romero JM, Doyle S, Elliott R, Murphy G and Carpenter R (1990) floricaula: a homeotic gene required for flower development in Antirrhinum majus.Cell 63; 1311–1322.
Haughn GW and Sommerville CR. (1988) Genetic control of morphogenesis in Arabidopsis.Devl.Genet. 9; 73–89.
Heslop-Harrison J. (1964) Sex expression in flowering plants.Brookhaven Symp.Biol. 16; 109–125.
Ingham PW. (1988) The molecular genetics of embryonic pattern formation in Drosophila.Nature 335; 25–34.
Kuckuck H and Schick R. (1930) Die Erbfaktoren bei Antirrhinum majus and ihre Bezeichung.Z.indukt.Abstamm.u.VererbLehre. 56; 51–83.
Peyritsch J. (1872) Uber Pelorienbildungen.Sber.Akad.Wiss.Wien. 66; 1–35.
Schwarz-Sommer Z, Huijser P, Nacken W, Saedler H and Sommer H (1990) Genetic control of flower development: homeotic genes in Antirrhinum majus.Science 250; 931–936.
Sommer H, Beltran J, Huijser P, Pape H, Lonnig W, Saedler H and Schwarz-Sommer Z.(1990) Deficiens, a homeotic gene involved in the control of flower morphogenesis in Antirrhinum majus: the protein shows homology to transcription factors.EMBO J. 9; 605–613.
Stubbe H. (1966) Genetik and Zytologie von Antirrhinum L. sect Antirrhinum. Veb.Gustav Fischer Verlag, Jena.
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© 1992 Springer-Verlag Berlin Heidelberg
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Bradley, D.J. et al. (1992). Homeotic Genes Directing Flower Development in Antirrhinum . In: Dattée, Y., Dumas, C., Gallais, A. (eds) Reproductive Biology and Plant Breeding. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-76998-6_5
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DOI: https://doi.org/10.1007/978-3-642-76998-6_5
Publisher Name: Springer, Berlin, Heidelberg
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