A first molecular phylogenetic analysis of Passiflora (Passifloraceae).
The results indicate that a reevaluation of the monophyly of Passiflora and its infrageneric classification is necessary, and the relationships among the major clades and of these clades with the related genera remain unresolved.
Molecular systematics of Iridaceae: evidence from four plastid DNA regions.
In the combined tree, all subfamilies were resolved as monophyletic, except Nivenioidae that formed a grade in which Ixioideae were embedded, and this subfamily also lacks clear morphological synapomorphies and is highly heterogeneous, so it is difficult to develop a strong case on nonmolecular grounds for their monophyly.
Molecular phylogeny of the genus Hypochaeris using internal transcribed spacers of nuclear rDNA: inference for chromosomal evolution.
- M. Cerbah, T. Souza-Chies, M. Jubier, B. Lejeune, S. Siljak-Yakovlev
- BiologyMolecular biology and evolution
- 1 March 1998
The ITS phylogenetic tree suggests that karyotype evolution in Hypochaeris was accompanied with both decreasing and increasing dysploidy, probably with several chromosomal rearrangements, and from an ancestral basic chromosome number of 4 or 5.
Evolution of oil-producing trichomes in Sisyrinchium (Iridaceae): insights from the first comprehensive phylogenetic analysis of the genus.
The distribution of oil-flower species across the phylogenetic trees suggests that oil-producing trichomes may have played a key role in the diversification of the genus, a hypothesis that requires future testing.
Phylogenetic analysis of Saccharum s.l. (Poaceae; Andropogoneae), with emphasis on the circumscription of the South American species.
- C. A. Welker, T. Souza-Chies, H. M. Longhi-Wagner, M. C. Peichoto, M. McKain, E. Kellogg
- BiologyAmerican-Eurasian journal of botany
- 1 February 2015
Better understanding of the phylogenetic relationships of Saccharum and relatives may be useful for sugarcane breeders to identify potential taxa for interspecific and intergeneric crosses in the genetic improvement of sugarcanes.
Oil-producing flowers within the Iridoideae (Iridaceae): evolutionary trends in the flowers of the New World genera.
Floral glandular structures and especially trichomal elaiophores evolved multiple times independently in the American tribes of Iridoideae and the distribution pattern of species displaying glandular trichomes across the phylogeny reveals lability in the pollination system and suggests that these structures may have played a significant role in the diversification of the Iridoidae on the American continent.
Population genetic structure of Sisyrinchium micranthum Cav. (Iridaceae) in Itapuã State Park, Southern Brazil
- L. O. Tacuatiá, L. Eggers, E. Kaltchuk-Santos, T. Souza-Chies
- BiologyGenetics and Molecular Biology
- 2 February 2012
Molecular analysis showed that the populations are highly structured with low gene flow among them, and population genetics in relation to cytogenetic data provided new insights regarding the genetic diversification and mating system of S. micranthum.
New information for Ilex phylogenetics based on the plastid psbA-trnH intergenic spacer (Aquifoliaceae).
The aim of the present work was to clarify the origin and phylogenetic position of the species belonging to the genus Ilex (Aquifoliaceae), especially the South American species, and to obtain more potentially parsimonious characters.
Floral rewards in the tribe Sisyrinchieae (Iridaceae): oil as an alternative to pollen and nectar?
- A. Silvério, S. Nadot, T. Souza-Chies, Olivier Chauveau
- BiologySexual Plant Reproduction
- 12 September 2012
All species showed large amounts of additional resources available for pollinators in the form of pollenkitt and polysaccharides present in the cytoplasm of the pollen grains, and were discussed in a phylogenetic context, with regard to pollinators and floral rewards reported for the tribe Sisyrinchieae.