Evolution and trends in the Psychotrieae alliance (Rubiaceae)--a rarely reported evolutionary change of many-seeded carpels from one-seeded carpels.

@article{Razafimandimbison2008EvolutionAT,
  title={Evolution and trends in the Psychotrieae alliance (Rubiaceae)--a rarely reported evolutionary change of many-seeded carpels from one-seeded carpels.},
  author={S. Razafimandimbison and C. Rydin and B. Bremer},
  journal={Molecular phylogenetics and evolution},
  year={2008},
  volume={48 1},
  pages={
          207-23
        }
}
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 genus Schizocolea and the Psychotrieae alliance sensu Bremer & Manen. Our analyses show that the Psychotrieae alliance can be subdivided into in four well-supported clades: Schizocolea, (Schradereae(Gaertnereae(Mitchelleae-Morindeae s.s.))), Palicoureeae-Psychotrieae s.s., and Craterispermeae-Prismatomerideae. The… Expand
Phylogeny and generic limits in the sister tribes Psychotrieae and Palicoureeae (Rubiaceae): Evolution of schizocarps in Psychotria and origins of bacterial leaf nodules of the Malagasy species.
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A widely circumscribed Psychotria encompassing the entire Psychotrieae is supported, with two separate origins of schizocarps from drupes, one reversal back to the drupaceous condition, and two independent origins of the Malagasy leaf-nodulated species are inferred. Expand
Evolutionary relationships in the Spermacoceae alliance (Rubiaceae) using information from six molecular loci: insights into systematic affinities of Neohymenopogon and Mouretia
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Nuclear ITS provided structured information at all phylogenetic levels, but the main gain from adding nrITS was the increased resolution and average support values also increased but were generally high also without nr ITS and the increase was not statistically significant. Expand
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The phylogenetic position of an enigmatic, critically endangered, Seychellean endemic of the coffee family (Rubiaceae), Psathura/Psychotria sechellarum, is investigated, and whether its presence on the granitic islands of the Seychelles is the result of vicariance or long-distance dispersal is assessed. Expand
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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
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TLDR
The Psychotria complex is characterised morphologically by caducous stipules and (usually) testa with a reddish, ethanol soluble pigment, and was found to be comprised of two major clades, one of which is psychotria in a strict sense. Expand
Collapse ofIsertieae, re-establishment ofMussaendeae, and a new genus ofSabiceeae (Rubiaceae); phylogenetic relationships based onrbcL data
TLDR
The investigation of molecular data neither supports the phylogeny of Andersson nor the classification of Robbrecht, but instead indicates totally new relationships ofIsertieae, Mussaendeae, andSabiceeae. 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
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
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
Polyphyly of Mussaenda inferred from ITS and trnT-F data and its implication for generic limits in Mussaendeae (Rubiaceae).
TLDR
The studies strongly suggest an African origin of the newly circumscribed Mussaenda, whereas Bremeria can be distinguished from the remaining Mussaendeae genera by having both reduplicates- and induplicate-valvate aestivation and densely pubescent styles. Expand
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
Phylogeny of the Cucurbitales based on DNA sequences of nine loci from three genomes: implications for morphological and sexual system evolution.
TLDR
Bisexual flowers are reconstructed as ancestral, but dioecy appears to have evolved already in the common ancestor of Begoniaceae, Cucurbitaceae, Datiscaceae, and Tetramelaceae and then to have been lost repeatedly in Begonuaceae and Cucurbitales. Expand
Phylogeny ofRubiaceae-Rubieae inferred from the sequence of a cpDNA intergene region
TLDR
A phylogenetic analysis of 25 species, representing eight genera of theRubieae tribe (Rubiaceae), has been made using the DNA sequence of the chloroplastatp B-rbc L intergene region, finding five groups are clearly separated and described as informal clades. Expand
Phylogeny of the tribe Cinchoneae ( Rubiaceae ) , its position in Cinchonoideae , and description of a new genus , Ciliosemina
Traditionally (e.g., Candolle, 1830; Schumann, 1891, 1897; Robbrecht, 1988), the tribe Cinchoneae has been circumscribed to include about 50 genera with ascendingly imbricate, winged seeds. Based onExpand
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