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Combined phylogenetic analysis in the Rubiaceae-Ixoroideae: morphology, nuclear and chloroplast DNA data.
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.
Subfamilial and Tribal Relationships in the Rubiaceae Based on rbcL Sequence Data
A parsimony analysis of rbcL sequences from 49 Rubiaceae genera (representing 23 tribes) and 7 outgroup taxa was performed. Species representing 48 genera of Rubiaceae were sequenced: Anthospermum,…
Nuclear ribosomal DNA sequence polymorphism and hybridization in checker mallows (Sidalcea, Malvaceae).
Unequal evolutionary rates between annual and perennial lineages of checker mallows (Sidalcea, Malvaceae): evidence from 18S-26S rDNA internal and external transcribed spacers.
It is concluded that generation time or possibly another biological factor distinguishing annuals and perennials has influenced rates of molecular evolution in SIDALCEA.
A phylogenetic analysis of 100+ genera and 50+ families of euasterids based on morphological and molecular data with notes on possible higher level morphological synapomorphies
A data matrix of 143 morphological and chemical characters for 142 genera of euasterids according to the APG system was compiled and complemented with rbcL and ndhF sequences for most of the genera and indicates that Adoxaceae are closely related to Dipsacales and hence they should be included in that order.
Reexamination of relationships, habital evolution, and phylogeography of checker mallows (Sidalcea; Malvaceae) based on molecular phylogenetic data.
Phylogenetic analysis of nuclear ribosomal DNA external and internal transcribed spacer region (ETS and ITS) sequences for Sidalcea (Malvaceae) resolved five major, well-supported lineages, three of…
Phylogenetic utility of the nuclear rDNA ITS region in subfamilyIxoroideae (Rubiaceae): Comparisons with cpDNArbcL sequence data
ITS of the nrDNA were sequenced for 21 taxa inIxoroideae and outgroups (Rubiaceae) and compared with sequences of the cp-generbcL and inconsistencies found may be caused by density of taxon sampling, different evolutionary rates, phylogenetic sorting, homoplasy caused by functional constraints, or sampling of non-orthologous ITS types.
A Molecular Phylogenetic Study of Arnica (Asteraceae): Low Chloroplast DNA Variation and Problematic Subgeneric Classification
The analyses revealed that A. nevadensis is most closely related to A. dealbata and A. mallotopus forms a strongly supported clade with A. unalaschcensis, and earlier biogeographical hypotheses that suggested an arctic origin and southward spread of the genus are not supported.
Evolutionary Biology Centre, On the Use of Molecular Uppsala University Phylogenies for Conservation Purposes
- K. Andreasen
- Environmental Science, Biology
- 5 May 2009
Part of Arctic Council's Conservation of Arctic Flora and Fauna Working Group (CAFF) Circumpolar Flora Group proceedings.
Nuclear rDNA ITS sequence data used to construct the first phylogeny of Vanguerieae (Rubiaceae)
Results from this first phylogenetic analysis of the tribe Vanguerieae clearly demonstrate a need for new circumscriptions of several genera, among which three new informal groups are discussed, i.e. the Vangueria group, the Fadogia-Rytigynia group and the Spiny group.