Phylogenetic utility of the nuclear rDNA ITS region in subfamilyIxoroideae (Rubiaceae): Comparisons with cpDNArbcL sequence data

@article{Andreasen1999PhylogeneticUO,
  title={Phylogenetic utility of the nuclear rDNA ITS region in subfamilyIxoroideae (Rubiaceae): Comparisons with cpDNArbcL sequence data},
  author={Katarina Andreasen and Bruce G. Baldwin and Birgitta Bremer},
  journal={Plant Systematics and Evolution},
  year={1999},
  volume={217},
  pages={119-135}
}
ITS of the nrDNA were sequenced for 21 taxa inIxoroideae and outgroups (Rubiaceae) and compared with sequences of the cp-generbcL. Separate and combined analyses were performed. ITS-variation was extensive and, because of alignment ambiguities, some sites were excluded from the analyses. Several topologies from therbcL analysis that conflicted with earlier classifications are corroborated by the ITS data: 1)Posoqueria should be excluded fromGardenieae. 2) The disputed genusBertiera, previously… 
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The phylogeny of the four genera of Aizoaceae subfamily Sesuvioideae (Sesuvium, Cypselea, Trianthema and Zaleya) is elucidated employing internal transcribed spacer sequences and 23 morphological characters and a combined molecular-morphological analysis provides largely congruent results.

A Molecular Phylogenetic Study of Arnica (Asteraceae): Low Chloroplast DNA Variation and Problematic Subgeneric Classification

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References

SHOWING 1-10 OF 57 REFERENCES

Comparisons of phylogenetic hypotheses among different data sets in dwarf dandelions (Krigia, Asteraceae): Additional information from internal transcribed spacer sequences of nuclear ribosomal DNA

The results from Krigia and theLactuceae suggest that nrDNA data may have limited utility in phylogenetic studies of plants, especially in groups which exhibit high levels of sequence divergence.

Discordance Between ITS and Chloroplast Topologies in the Boykinia Group (Saxifragaceae)

To assess whether discord exists between nuclear- and chloroplast-based phylogenetic trees within the Boykinia group (Saxifragaceae), we compared topologies obtained from analyses of ITS sequences…

Phylogenetic utility of the internal transcribed spacers of nuclear ribosomal DNA in plants: an example from the compositae.

a molecular phylogeny of apiaceae subfamily Apioideae: evidence from nuclear ribosomal DNA internal transcribed spacer sequences

IT sequences are useful for phylogenetic inference among closely related members of Apioideae but, owing to high rates of nucleotide substitution, are less useful in resolving relationships among the more ancestral nodes of the phylogeny.

ITS sequence variation within and among populations of Lomatium grayi and L. laevigatum (Umbelliferae).

ITS-1 sequences in Lomatium are less variable than either allozymes or chloroplast DNA and do not appear to provide a valuable source of intraspecific markers for population-level studies.

DISCORDANCE BETWEEN NUCLEAR AND CHLOROPLAST PHYLOGENIES IN THE HEUCHERA GROUP (SAXIFRAGACEAE)

Comparison of relationships based on cpDNA and ITS sequences for the Heuchera group underscores the need for caution in the use of organellar variation for retrieving phylogeny at lower taxonomic levels, particularly in groups noted for hybridization.

Chloroplast DNA phylogeny, reticulate evolution, and biogeography of Paeonia (Paeoniaceae).

A refined hypothesis of species phylogeny of section Paeonia was proposed by considering the discordance between the nuclear and cpDNA phylogenies to be results of hybrid speciation followed by inheritance of cpDNA of one parent and fixation of ITS sequences of another parent.

Documentation of reticulate evolution in peonies (Paeonia) using internal transcribed spacer sequences of nuclear ribosomal DNA: implications for biogeography and concerted evolution.

Reconstruction of reticulate evolution with sequence data provides gene records for distributional histories of some of the parental species and demonstrates that the sequence data could be highly informative and accurate for detecting hybridization.

Phylogeny of the Gardenieae (Rubiaceae)

Abstract The phylogeny of Gardenieae (Rubiaceae) is evaluated using 70 morphological and anatomical characters and 81 terminal taxa. After successive reweighting of the characters and modified…

Phylogeny, diversity, and distribution inExostema (Rubiaceae): Implications of morphological and molecular analyses

Morphological evolution in Exostema involves many specializations for xeric habitats, reflecting repeated ecological shifts from moist forest to exposed, seasonally dry environments during the diversification of the genus.
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