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Intra-individual polymorphism in diploid and apomictic polyploid hawkweeds (Hieracium, Lactuceae, Asteraceae): disentangling phylogenetic signal, reticulation, and noise
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SYSNO ASEP 0332806 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Intra-individual polymorphism in diploid and apomictic polyploid hawkweeds (Hieracium, Lactuceae, Asteraceae): disentangling phylogenetic signal, reticulation, and noise Title Intra-individuální polymorfismus u diploidních a apomiktických polyploidních jestřábníků (Hieracium, Lactuceae, Asteraceae): rozluštěný fylogenetický signál, retikulace a evoluční šum Author(s) Fehrer, Judith (BU-J) RID, ORCID
Krak, Karol (BU-J) RID, ORCID
Chrtek, Jindřich (BU-J) RID, ORCIDNumber of authors 3 Source Title BMC Evolutionary Biology. - : BioMed Central - ISSN 1471-2148
-, č. 9 (2009), s. 239Number of pages 23 s. Publication form www - www Language eng - English Country GB - United Kingdom Keywords Hieracium ; reticulation ; evolution Subject RIV EF - Botanics R&D Projects GA206/05/0657 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z60050516 - BU-J (2005-2011) UT WOS 000271183900001 DOI 10.1186/1471-2148-9-239 Annotation The first molecular phylogeny of Hieracium s.str. based on diploids and polyploids of supposed non-hybrid origin (‘basic species’) is presented. The group is split into two major clades roughly corresponding to species with Eastern or Western European origin. Contrary to expectation, abundant evidence for hybridization was found; most of it concerned parental combinations from both groups. Survival in different glacial refugia, and speciation and hybridization (accompanied by polyploidization and apomixis) as a result of secondary contact are probable. The data also show evidence of extinct taxa that have left their molecular traces in contemporary hybrids and suggest the presence of a much larger range of ancestral diploids in former times. Prominent intra-individual variation in a multicopy nuclear region required detailed character state analysis in order to distinguish phylogenetic signal from hybrid origin and homoplasy. Workplace Institute of Botany Contact Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Year of Publishing 2010
Number of the records: 1