Phylogenetic Relationships within Phacelia subgenus Phacelia (Hydrophyllaceae) Inferred From Nuclear rDNA ITS Sequence Data
@inproceedings{Gilbert2005PhylogeneticRW, title={Phylogenetic Relationships within Phacelia subgenus Phacelia (Hydrophyllaceae) Inferred From Nuclear rDNA ITS Sequence Data}, author={Cynthia Gilbert and John Dempcy and Constance Ganong and Robert W. Patterson and Greg Spicer}, year={2005} }
Abstract We examined infrageneric relationships within Phacelia subgenus Phacelia based on phylogenetic hypotheses derived from internal transcribed spacers (ITS) and the 5.8S gene of nuclear ribosomal DNA. Maximum parsimony (MP) and maximum likelihood (ML) phylogenies support the monophyly of sects. Euglypta and Miltitzia, previously hypothesized based on seed characters and ecological distribution. Tree branching patterns within the Euglypta/Miltitzia clade indicate three principle lineages…
13 Citations
Phylogenies and Chromosome Evolution of Phacelia (Boraginaceae: Hydrophylloideae) Inferred from Nuclear Ribosomal and Chloroplast Sequence Data
- Biology
- 2014
Phylogenetic analyses (maximum parsimony, maximum likelihood, and Bayesian inference) recovered gene tree topologies similar to previous molecular studies and corroborate incongruence between nuclear and plastid topologies for placement of some problematic groups.
Phylogenetic Relationships between and within Phacelia Sections Whitlavia and Gymnobythus (Boraginaceae)
- Biology
- 2009
The results indicate that section Gymnobythus is monophyletic, and members of section Whitlavia form two clades that correspond to subsections previously suggested by Gillett.
Phylogeny and historical biogeography of Hydrophyllaceae and Namaceae, with a special reference to Phacelia and Wigandia
- Environmental Science, BiologySystematics and Biodiversity
- 2020
The phylogeny of Hydrophyllaceae and Namaceae is inferred implementing both likelihood and Bayesian methods and long-distance dispersal may have been necessary for the colonization of South America by Namaceae during the Oligocene–Miocene transition, when North and South America were not connected.
Correspondence of morphology, phylogeny and reproductive barriers in Phacelia subgenus cosmanthus (Hydrophyllaceae)1
- Biology
- 2011
Gene flow between members of this closely related species pair is blocked by hybrid inviability whose expression occurs following normal pollen tube growth and apparent fertilization, which adds to the knowledge of an already diverse suite of isolating mechanisms in Phacelia subgenus Cosmanthus.
Evidence of Ecological Speciation in Phacelia .
- Biology
- 2007
DNA sequences from the ribosomal DNA internal transcribed region showed that Phacelia fimbriata and P. purshii comprise a monophyletic clade but that P. fimbRIata is more differentiated from related species.
Karyotype Analysis of the Fiddleneck (Phacelia tanacetifofia Benth.)
- Biology
- 2015
Two varieties of fiddleneck (Phacelia tanacetifolia Benth.) plant were determined for visualizing somatic chromosomes and the karyotype formulas of two varieties offiddleneck were 16 median and 6 submedian (16 m + 6 sm).
Elevation of Phacelia cicutaria var. hubbyi (Boraginaceae) to Species Status
- Environmental Science
- 2009
It is distinguished morphologically from P. cicutaria and P. hispida by its more robust habit, more densely congested inflorescences, lack of mottled markings on the corolla, thicker shaggy hairs on the stems and leaves, and calyx lobes that closely invest the fruit.
Are polyploids really evolutionary dead-ends (again)? A critical reappraisal of Mayrose et al. ().
- BiologyThe New phytologist
- 2014
Polyploidy is now viewed not as a mere side branch of evolution, but as a major mechanism of evolution and diversification.
Recently Formed Polyploid Plants Diversify at Lower Rates
- BiologyScience
- 2011
Likelihood-based analyses indicate that polyploids generally exhibit lower speciation rates and higher extinction rates than diploids, providing the first quantitative corroboration of the dead-end hypothesis.
Range size, taxon age and hotspots of neoendemism in the California flora
- Environmental Science
- 2010
Substantial portions of California with high levels of plant neoendemism fall outside of protected lands, indicating that additional action will be needed to preserve the geographic areas apparently associated with high rates of plant diversification.
References
SHOWING 1-10 OF 19 REFERENCES
PHYLOGENETIC ANALYSIS AND RELATIONSHIPS IN HYDROPHYLLACEAE BASED ON NDHF SEQUENCE DATA
- Biology
- 1998
An analysis of evolutionary relationships within the angiosperm family Hydrophyllaceae was completed. A parsimony search using DNA sequence data from the chloroplast gene ndhF from 65 accessions…
Biogeography and floral evolution of baobabs (Adansonia, Bombacaceae) as inferred from multiple data sets.
- BiologySystematic biology
- 1998
The phylogeny does not permit unambiguous reconstruction of floral evolution but suggests the plausible hypothesis that hawkmoth pollination was ancestral in Adansonia and that there were two parallel switches to pollination by mammals in the genus.
SYSTEMATIC STUDIES IN THE PHACELIA HUMILES GROUP (HYDROPHYLLACEAE): COROLLA VENATION PATTERNS
- Environmental Science
- 1986
Corolla venation patterns are used to evaluate relationships within the Humiles group, and to reaffirm the artificial nature of sections based on ovule number.
Taxonomy of Phacelia section Miltitzia (hydrophyllaceae)
- Biology
- 1979
The species of Phacelia sect. Miltitzia are found in the Great Basin physiographic province of western North America and are distinguished from other members of Phacelia by their yellow, marcescent…
Design and testing of a plant‐specific PCR primer for ecological and evolutionary studies
- Biology, Environmental Science
- 1992
A polymerase chain reaction (PCR) primer, 28KJ (5‐GGCGGTAAATTCCGTCC‐3), was developed to specifically amplify plant DNA and was used in combination with the universal primer 28C, which successfully amplified all angiosperm and conifer DNAs, but no fungal or algal DNAs.
CONFIDENCE LIMITS ON PHYLOGENIES: AN APPROACH USING THE BOOTSTRAP
- EconomicsEvolution; international journal of organic evolution
- 1985
The recently‐developed statistical method known as the “bootstrap” can be used to place confidence intervals on phylogenies and shows significant evidence for a group if it is defined by three or more characters.
MODELTEST: testing the model of DNA substitution
- BiologyBioinform.
- 1998
SUMMARY
The program MODELTEST uses log likelihood scores to establish the model of DNA evolution that best fits the data.
AVAILABILITY
The MODELTEST package, including the source code and some…
Taxonomic studies in the Phacelia magellanica polyploid complex
- University of California Botanical Publication
- 1960