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Auteur Judita Lihová |
Documents disponibles écrits par cet auteur (3)
Affiner la rechercheComparative ITS and AFLP analysis of diploid cardamine (brassicaceae) taxa from closely related polyploid complexes / Karol Marhold in Annals of Botany, 93 (2004)
Titre : Comparative ITS and AFLP analysis of diploid cardamine (brassicaceae) taxa from closely related polyploid complexes Type de document : Imprimé Auteurs : Karol Marhold ; Judita Lihová ; Marián Perny ; Walter Bleeker Année de publication : 2004 Article en page(s) : 507-520 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Phylogénie (liens existant entre espèces apparentées) Mots-clés : Cardamine pratensis L. Cardamine raphanifolia Cardamine amara L. Résumé : Background and aims: Diploid representatives from the related polyploid complexes of Cardamine amara, C. pratensis and C. raphanifolia (Brassicaceae), were studied to elucidate phylogenetic relationships among the complexes and among the individual taxa included. Methods: Two independent molecular data sets were used: nucleotide sequences from the internal transcribed spacers (ITS) of nrDNA, and amplified fragment length polymorphism (AFLP) markers. Seventeen diploid taxa from the studied groups were sampled. Key results: Both ITS and AFLP analyses provided congruent results in inferred relationships, and revealed two main lineages. While the C. amara group, consisting of C. wiedemanniana and four subspecies of C. amara, was resolved as a well-supported monophyletic group, taxa from the C. pratensis and C. tenera groups (the latter representing diploid taxa of the complex of C. raphanifolia) all appeared together in a single clade/cluster with no support for the recognition of either of the groups. Intra-individual polymorphisms and patterns of nucleotide variation in the ITS region in C. uliginosa and C. tenera, together with the distribution of AFLP bands, indicate ancient hybridization and introgression among these Caucasian diploids. Conclusions: The lack of supported hierarchical structure suggests that extensive reticulate evolution between these groups, even at the diploid level, has occurred (although an alternative explanation, namely ancestral polymorphism in ITS data, cannot be completely excluded). Several implications for the investigation of the polyploid complexes of concern are drawn. When tracing origins of polyploid taxa, a much more complex scenario should be expected, taking into account all relatives as potential parents, irrespective of the group in which they are classified.
Lien pérenne : DOI : 10.1093/aob/mch073 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149111
in Annals of Botany > 93 (2004) . - 507-520Marhold, Karol, Lihová, Judita, Perny, Marián, Bleeker, Walter 2004 Comparative ITS and AFLP analysis of diploid cardamine (brassicaceae) taxa from closely related polyploid complexes. Annals of Botany, 93: 507-520.Documents numériques
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Article (2004)URL
Titre : Natural hybridization in Cardamine (Brassicaceae) in the Pyrenees: evidence from morphological and molecular data Type de document : Imprimé Auteurs : Karol Marhold ; Judita Lihová ; Marián Perny ; Rudi Grupe Année de publication : 2002 Article en page(s) : 275-294 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Génétique et écologie (dynamique, démographique, sélection) Mots-clés : Cardamine Résumé : While researching Cardamine (Brassicaceae) in the Pyrenees, putative hybrid plants were found at two natural sites. Pollen grain viability, AFLP, and multivariate morphometric analyses were performed in order to assess the plants' presumed hybrid origin, establishing that natural hybridization between the diploids C. crassifolia and C. amara ssp. pyrenaea had occurred. A new diploid nothospecies, C.×enriquei (2n = 2x = 16), is described. Examination of 18 morphological characters showed the intermediacy of the hybrid between the parental taxa in most characters. AFLP analyses of C. amara ssp. amara, ssp. austriaca, ssp. olotensis and C. raphanifolia, demonstrated the close position of the hybrid to C. crassifolia, and revealed that the highest number of markers were shared with the parents. Polymorphism found in the AFLP pattern of the hybrid suggested recurrent origin, segregation and/or backcrosses, although assessment of pollen viability indicated high male sterility. The hybridization event reported here represents the second documented case between the C. pratensis group and C. amara. An account of the nomenclature of C. crassifolia is also presented, including lectotypification of relevant names. Lien pérenne : DOI : 10.1046/j.1095-8339.2002.00066.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149119
in Botanical journal of the Linnean Society > 139 (2002) . - 275-294Marhold, Karol, Lihová, Judita, Perny, Marián, Grupe, Rudi 2002 Natural hybridization in Cardamine (Brassicaceae) in the Pyrenees: evidence from morphological and molecular data. Botanical journal of the Linnean Society, 139: 275-294.Documents numériques
Article (2002)URL
Titre : Origin of the disjunct tetraploid Cardamine amporitana (Brassicaceae) assessed with nuclear and chloroplast DNA sequence data Type de document : Imprimé Auteurs : Judita Lihová ; Javier Fuertes Aguilar (1960-) ; Karol Marhold ; Gonzalo Nieto Feliner Année de publication : 2004 Article en page(s) : 1231-1242 Langues : Anglais (eng) Mots-clés : Cardamine amporitana Résumé : Seventy-four nucleotide sequences from the ITS regions of nuclear ribosomal DNA and 76 from the trnL-trnF spacer of chloroplast DNA were used to address the origin of tetraploid Cardamine amporitana, the conspecifity of central Italian and northeastern Spanish populations, and the possible cause for such geographic disjunction. Because of the complex lineage relationships in Cardamine, the sampling included 22 taxa. In the results, both data sets are highly congruent in supporting a close relationship of C. amporitana to the widespread Eurasian C. amara. Low genetic variability in northeastern Spanish populations of C. amporitana suggests long-distance dispersal from central Italy. The interior position of the single northeastern Spanish haplotype in a statistical parsimony network of trnL-trnF haplotypes however does not support this scenario and invokes other plausible phylogeographic explanations. The disappearance of geographically intermediate populations and genetic impoverishment by migration and isolation, both probably associated with Quaternary climatic oscillations, appears as an alternative hypothesis to explain the phylogeographic pattern. A recent hybridization event is reported between C. amporitana and a diploid from the C. pratensis group in central Italy on the basis of additive polymorphisms in ITS for all the 22 distinguishing nucleotides. Lien pérenne : DOI : 10.3732/ajb.91.8.1231 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149118
in American Journal of Botany > 91 (8) (2004) . - 1231-1242Lihová, Judita, Fuertes Aguilar, Javier (1960-), Marhold, Karol, Nieto Feliner, Gonzalo 2004 Origin of the disjunct tetraploid Cardamine amporitana (Brassicaceae) assessed with nuclear and chloroplast DNA sequence data. American Journal of Botany, 91(8): 1231-1242.Documents numériques
Article (2004)URL
