| Unexpectedly high genetic variation in large unisexual clumps of the subdioecious plant Honckenya peploides (Caryophyllaceae). | |
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MedLine Citation:
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PMID: 20522189 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Honckenya peploides is a subdioecious dune plant that reproduces both sexually and by clonal growth. In northwest Spain this species was found to exhibit an extreme spatial segregation of the sexes, and our objective was to investigate genetic variation in unisexual clumps. Genetic variation was studied in six unisexual clumps of H. peploides, three of them exclusively composed of males and three exclusively female. In total, 193 samples were analysed using isozyme analysis and 80 samples were analysed using two AFLP primer combinations. Both techniques revealed considerably high genetic diversity (average proportion of distinguishable genotypes: 0.22 for isozymes and 0.36 for AFLP; average Simpson's D: 0.65 for isozymes and 0.68 for AFLP). Our results show that, in spite of clonal growth, each unisexual clump consists of different genotypes. Genetic diversity within clumps is similar for both sexual morphs. Reasons for unisexuality of the clumps are discussed. |
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Authors:
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J Sánchez-Vilas; M Philipp; R Retuerto |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Plant biology (Stuttgart, Germany) Volume: 12 ISSN: 1438-8677 ISO Abbreviation: Plant Biol (Stuttg) Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-06-04 Completed Date: 2010-08-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101148926 Medline TA: Plant Biol (Stuttg) Country: England |
Other Details:
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Languages: eng Pagination: 518-25 Citation Subset: IM |
Affiliation:
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Area de Ecología, Facultad de Biología, Avda. Lope Gómez de Marzoa s/n, Universidad de Santiago de Compostela, Santiago de Compostela, Spain. julia.sanchezvilas@plants.ox.ac.uk |
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| MeSH Terms | |
Descriptor/Qualifier:
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Amplified Fragment Length Polymorphism Analysis Caryophyllaceae / enzymology, genetics* DNA, Plant / genetics Genetic Variation* Genotype Isoenzymes / analysis Sequence Analysis, DNA Spain |
| Chemical | |
Reg. No./Substance:
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0/DNA, Plant; 0/Isoenzymes |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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