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Sex determination in the dioecious Melandrium. The X/Y chromosome system allows complementary cloning strategies |
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| Authors: | D. Ye M. Oliveira J. Veuskens Y. Wu P. Installe S. Hinnisdaels A.T. Truong S. Brown A. Mouras I. Negrutiu |
| Affiliation: | a Plantengenetica, Institute for Molecular Biology, Paardenstraat 65, B-1640, St Genesius Rode, Belgium b Dept. Biologia Vegetal, Fac. Ciencias, Universida Lisboa, Bloco C2 Piso 1 Campo Grande, P-1700, Lisboa, Portugal c Phytotec SA, chaussee Romaine 77, B-5030, Gembloux, Belgium d Institut des Sciences Vegetales, Centre National de la Recherche Scientifique, Service de Cytometrie, CNRS 1p40, F-91198, Gif-sur-Yvette, France e Universite de Bordeaux II, avenue des Facultes, F-33405, Talance Cedex, France |
| Abstract: | Melandrium album (Silene alba) is a dioecious species showing a clear-cut correlation between the phenotypic sex and the presence of heteromorphic sex chromosomes. The paper reviews basic aspects on taxonomy and flowering, concentrating on classical and more recent experiments on sex conversion: hormonal balance in planta or in vitro, interactions with the fungus Ustilago violacea, haploid production from anthers, induction of sex chromosomal aberrations via crosses between polyploids and interspecific crosses, isolation of sexual mutants through pollen irradiation, etc. The experimental data is used to discuss the current understanding of sex determination in this species. The phenotypic and genetic characteristics of Melandrium are underlined and enable alternative and complementary cloning strategies for genes involved in sex determination and differentiation. |
| Keywords: | Melandrium album dioecious sex determination and differentiation X and Y chromosomes mutants cloning strategies |
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