Deep divergences in the coffee family and the systematic position of Acranthera

@article{Rydin2008DeepDI,
  title={Deep divergences in the coffee family and the systematic position of Acranthera},
  author={Catarina Rydin and Kent Kainulainen and Sylvain G. Razafimandimbison and Jenny E. E. Smedmark and Birgitta Bremer},
  journal={Plant Systematics and Evolution},
  year={2008},
  volume={278},
  pages={101-123}
}
Despite extensive efforts, there are unresolved questions on evolutionary relationships in the angiosperm family Rubiaceae. Here, information from six loci and 149 Rubiaceae taxa provide new insights. Acranthera and Coptosapelta are strongly supported as sisters. Pollen grains of Acranthera possess several features common in Rubiaceae, but amongst potential similarities with the unusual grains of Coptosapelta are the nature of the apertures and the structure of the sexine. Luculia, Acranthera… Expand

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References

SHOWING 1-10 OF 132 REFERENCES
A phylogeny of Urophylleae (Rubiaceae) based on rps16 intron data
TLDR
Using sequence data from the rps16 intron to address the question where the four genera Temnopteryx, Pentaloncha, Pleiocarpidia, and Poecilocalyx belong, it is shown that there is conflict regarding the resolution among lineages in Rubioideae, which partly affects the support for relationships within Urophylleae. Expand
Combined phylogenetic analysis in the Rubiaceae-Ixoroideae: morphology, nuclear and chloroplast DNA data.
TLDR
The combined analysis resulted in higher resolution compared to the separate analyses, exemplifying that combined analyses can remedy the incapability of one data set to resolve portions of a phylogeny. Expand
Evolution and trends in the Psychotrieae alliance (Rubiaceae)--a rarely reported evolutionary change of many-seeded carpels from one-seeded carpels.
Bayesian and parsimony analyses of five plastid gene and nrITS regions from 58 Rubioideae (Rubiaceae) taxa further support the sister-group relationship between the African monotypic genusExpand
Rare and enigmatic genera (Dunnia, Schizocolea, Colletoecema), sisters to species-rich clades: phylogeny and aspects of conservation biology in the coffee family.
TLDR
Phylogenetic, morphological, and geographical isolation of Dunnia, Schizocolea and Colletocema may indicate high genetic diversity and if extinct, the loss would not only mean loss of genetic diversity of a single species but of an entire lineage. Expand
Monophyly and relationships of the tribe Exaceae (Gentianaceae) inferred from nuclear ribosomal and chloroplast DNA sequences.
TLDR
The topology of the phylogenetic trees conform with the Gondwana vicariance hypothesis regarding the biogeography of Exaceae, however, no evidence for matching the older relationships within the family to the tectonic history could be corroborated with various divergence time analyses. Expand
Palynological characters and their phylogenetic signal in Rubiaceae
TLDR
The systematic usefulness of pollen morphology in Rubiaceae is discussed at the (sub)family, tribal, generic, and infraspecific levels, using up-to-date evolutionary hypotheses for the different lineages in the family. Expand
Phylogeny and classification of the subfamily Rubioideae (Rubiaceae)
TLDR
P phylogenetic analyses of the subfamily Rubioideae (Rubiaceae) based on three different pieces of chloroplast DNA, the protein coding rbcL gene, the spacer sequence betweenatpB andrbcL, and the recently published rps16 intron data are performed. Expand
Phylogeny of Gardenieae (Rubiaceae) based on chloroplast DNA sequences from the rps16 intron and trnL(UAA)‐F(GAA) intergenic spacer
TLDR
The results indicate that Gardenieae is polyphyletic and that genera included in the subtribe Diplosporinae should be transferred to the Coffeeae and Octotropideae. Expand
Searching for the taxonomic position of the African genus Colletoecema (Rubiaceae): morphology and anatomy compared to an rps16-intron analysis of the Rubioideae
TLDR
Morphological and anatomical comparison shows that Colletoecema differs in many aspects from the Psychotrieae (e.g., wood anatomy, seed structure). Expand
Molecular Phylogenetics and Patterns of Floral Evolution in the Ericales
TLDR
It is demonstrated that sympetaly is a homoplasious character in the order, that a diplostemonous floral ground plan likely arose from haplostemonic flowers in Ericales, and that the combination of ovules with a single integument and cellular endosperm formation is characteristic for two of the major clades in theOrder. Expand
...
1
2
3
4
5
...