0172269 - UEB-Q 20023054 RIV GB eng J - Journal Article
Mes, T. - Kuperus, P. - Kirschner, J. - Štěpánek, J. - Oosterveld, P. - Štorchová, Helena - Den Nijs, J.
Detection of genetically divergent clone mates in apomictic dandelions.
Molecular Ecology. Roč. 11, č. 2 (2002), s. 253-265. ISSN 0962-1083. E-ISSN 1365-294X
R&D Projects: GA ČR GA206/00/1354
Institutional research plan: CEZ:AV0Z5038910
Keywords : NUCLEAR RIBOSOMAL DNA * GENERAL PURPOSE GENOTYPES * CHARACTER COMPATIBILITY
Subject RIV: EB - Genetics ; Molecular Biology
Impact factor: 3.014, year: 2002

This study aims to identify genetically diverged clone mates in apomictic dandelions. Clone mates are defined as individuals that may have diverged as a result of mutation accumulation and that have undergone only clonal reproduction since their most recent common ancestor. Based on distinctive morphology and an aberrant and rare chloroplast haplotype, northwest European individuals of Taraxacum section Naevosa are well suited for the detection of clonal lineages in which mutation has occurred. In the case of strictly clonal reproduction, nuclear genetic variability was expected to be hierarchically organized. Nucleotide polymorphisms in internal transcribed spacer (ITS) sequences, however, were incompatible with a clonal structure of the Norwegian individuals, probably due to persistent ancestral polymorphisms that pre-date the origin of the Naevosa clone. This interpretation is supported by the presence of ITS variants in section Naevosa that were also found in distantly related dandelions.
Permanent Link: http://hdl.handle.net/11104/0069308