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Genetic diversity and population structure in natural populations of Moroccan Atlas cedar (Cedrus atlantica; Pinaceae) determined with cpSSR markers.
- A. Terrab, O. Paun, S. Talavera, K. Tremetsberger, M. Arista, T. Stuessy
- Environmental ScienceAmerican-Eurasian journal of botany
- 1 September 2006
AMOVA analysis showed that most of the variation in C. atlantica occurs within populations and confirmed the general tendency of gymnosperms to display lower values of population differentiation than angiosperms and the distance-based clustering method (PCoA and neighbor-joining analysis) and the geographical structure revealed a poor structure among the six populations.
Genetic diversity at chloroplast microsatellites (cpSSRs) and geographic structure in endangered West Mediterranean firs (Abies spp., Pinaceae)
- A. Terrab, S. Talavera, M. Arista, O. Paun, T. Stuessy, K. Tremetsberger
- Environmental Science
- 1 May 2007
The analysis indicates that the population formerly assigned to the species A. tazaotana is, in fact, genetically very close to most A marocana stands, and implications of the observed population structures for conservation and management of West Mediterranean Abies taxa are discussed.
Pleistocene refugia and recolonization routes in the southern Andes: insights from Hypochaeris palustris (Asteraceae, Lactuceae)
- A. N. Muellner, K. Tremetsberger, T. Stuessy, C. Baeza
- Environmental ScienceMolecular Ecology
- 8 December 2004
It is very likely that H. palustris recolonized the central ranges of the southern Andes from nearby refugia, possibly unglaciated areas N, E, and/or S of its present distributional area.
Pleistocene refugia and polytopic replacement of diploids by tetraploids in the Patagonian and Subantarctic plant Hypochaeris incana (Asteraceae, Cichorieae)
The phylogeographic pattern of the Patagonian and Subantarctic plant Hypochaeris incana suggests that the species seems to have expanded its populational system in postglacial times, when the climate became warmer and more humid and there was a parallel replacement of diploids by tetraploids in local populations.
Divergence time estimation in Cichorieae (Asteraceae) using a fossil-calibrated relaxed molecular clock
- K. Tremetsberger, B. Gemeinholzer, Holger Zetzsche, S. Blackmore, N. Kilian, S. Talavera
- Geography, BiologyOrganisms Diversity & Evolution
- 1 March 2013
The best estimate of the age of Cichorieae and its subtribes is provided based on available fossil evidence and DNA sequences and to interpret their biogeography in the light of Earth history.
Molecular phylogenetics reveals Leontodon (Asteraceae, Lactuceae) to be diphyletic.
Phylogenetic relationships inferred from the independent and combined data are largely congruent and reveal that Leontodon sensu lato (s.l.) as presently defined is diphyletic: L. leontodon forms a clade with Helminthotheca, Picris and Hypochaeris as sister genera, whereas L. subgenus Oporinia is better treated as a separate genus.
Population structure of Hypochaeris salzmanniana DC. (Asteraceae), an endemic species to the Atlantic coast on both sides of the Strait of Gibraltar, in relation to Quaternary sea level changes
- M. A. Ortiz, K. Tremetsberger, S. Talavera, T. Stuessy, J. L. García-Castaño
- Environmental ScienceMolecular Ecology
- 24 January 2007
The neighbour‐joining tree shows that the populations south of the Loukos river in Morocco are clearly differentiated, having more polymorphic, private, and rare fragments, and higher genetic diversity, than all the other populations.
Phylogenetic relationships among species of Hypochaeris (Asteraceae, Cichorieae) based on ITS, plastid trnL intron, trnL-F spacer, and matK sequences.
- R. Samuel, T. Stuessy, K. Tremetsberger, C. Baeza, S. Siljak-Yakovlev
- BiologyAmerican-Eurasian journal of botany
- 1 March 2003
Monophyly of species of Hypochaeris from South America is strongly supported by both ITS and the joint matrix of ITS, trnL, and matK data, and low levels of sequence divergence among South American taxa suggest a pattern of rapid speciation, in contrast to much greater divergence among European representatives.
Nuclear ribosomal DNA and karyotypes indicate a NW African origin of South American Hypochaeris (Asteraceae, Cichorieae).
Infraspecific genetic variation in Biscutella laevigata (Brassicaceae): new focus on Irene Manton's hypothesis
- K. Tremetsberger, C. König, R. Samuel, W. Pinsker, T. Stuessy
- Environmental SciencePlant Systematics and Evolution
- 1 October 2002
Genetic variation in 42 populations throughout the range of Biscutella laevigata has been investigated by enzyme electrophoresis with three loci and it is suggested that the diploid relic subspecies austriaca from the NE Prealps and Alps is highly variable.