Evolution of Reproductive Systems in the Genus Silene

The genus Silene contains both hermaphrodite, gynodioecious and dioecious species, dioecy being represented in three sections of the genus. To locate the events of change of reproductive systems, we compared ITS sequences of 22 species of Silene chosen throughout the whole genus, and four putative o...

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Bibliographic Details
Published in:Proceedings of the Royal Society. B, Biological sciences Biological sciences, 1996-04, Vol.263 (1369), p.409-414
Main Authors: Desfeux, Christine, Maurice, Sandrine, Henry, Jean-pierre, Lejeune, Bernard, Gouyon, Pierre-henri
Format: Article
Language:English
Subjects:
Biodiversity and Ecology
Biological Evolution
Biological taxonomies
Dioecy
DNA, Plant - genetics
DNA, Ribosomal Spacer - genetics
domain_sde.be.bp
Ecological genetics
Environmental Sciences
Evolution
Female animals
Gynodioecy
Hermaphroditism
Phylogenetics
Phylogeny
Plants
Reproduction, Asexual
Reproductive system
Silene - genetics
Silene - physiology
Species Specificity
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Summary:The genus Silene contains both hermaphrodite, gynodioecious and dioecious species, dioecy being represented in three sections of the genus. To locate the events of change of reproductive systems, we compared ITS sequences of 22 species of Silene chosen throughout the whole genus, and four putative outgroup species. Gynodioecy, which is the most common reproductive system within the genus Silene and in closely related genera such as Saponaria and Dianthus, is proposed to be ancestral in the genus. Dioecy has evolved at least twice: once in the section containing S. latifolia, and once in the clade containing S. otites and S. acaulis ssp. bryoides. Evolution towards hermaphroditism, associated with evolution of selfing, has also occurred at least twice, in S. gallica and S. conica.
ISSN:0962-8452
1471-2954
DOI:10.1098/rspb.1996.0062