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Full-Text Articles in Life Sciences
Phylogenetic Analysis Of The Zingiberales Based On RbcL Sequences, James F. Smith, W. John Kress, Elizabeth A. Zimmer
Phylogenetic Analysis Of The Zingiberales Based On RbcL Sequences, James F. Smith, W. John Kress, Elizabeth A. Zimmer
Biology Faculty Publications and Presentations
Morphological data have been used previously to construct phylogenies of the eight families of the Zingiberales one of the most widely accepted monophyletic groups of flowering plants. To provide additional support for phylogenetic relationships within the order, and placement of the order among monocots, we present a parsimony analysis of DNA sequences from the chloroplast-encoded gene, rbcL, for 21 species of Zingiberales and proposed relatives. Five analyses with equal, and differential weights were performed. All analyses resulted in the same most parsimonious tree for taxa within the Zingiberales and the immediate outgroup. The closest sister group to the Zingiberales …
Phylogenetic Hypotheses For The Monocotyledons Constructed From RbcL Sequence Data, James F. Smith
Phylogenetic Hypotheses For The Monocotyledons Constructed From RbcL Sequence Data, James F. Smith
Biology Faculty Publications and Presentations
DNA sequences for the plastid locus that encodes the large subunit if ribulose 1.5 bisphosphate carboxylase/oxygenase (rbcL) were determined for 18 species of monocotyledons in 15 families. These data were analyzed together with sequences for 60 other monocot species in a total of 52 families by the maximum likelihood method producing one, presumably optimal, topology. An additional 26 species were added (104 total monocot species) and analyzed by the parsimony method with an outgroup of 18 dicot species producing 109 trees of 3,932 steps. The rbcL data show at least moderate support for seven lineages corresponding to …
Phylogenetics Of Seed Plants: An Analysis Of Nucleotide Sequences From The Plastid Gene RbcL, James F. Smith
Phylogenetics Of Seed Plants: An Analysis Of Nucleotide Sequences From The Plastid Gene RbcL, James F. Smith
Biology Faculty Publications and Presentations
We present the results of two exploratory parsimony analyses of DNA sequences from 475 and 499 species of seed plants. respectively, representing all major taxonomic groups. The data are exclusively from the chloroplast gene rbcL, which codes for the large subunit of ribulose-l .5-bisphosphate carboxylase/ oxygenase (RuBisCO or RuBPCase). We used two different state-transformation assumptions resulting in two sets of cladograms: (i) equal-weighting for the 499-taxon analysis; and (ii) a procedure that differentially weights transversions over transitions within characters and codon positions among characters for the 475-taxon analysis. The degree of congruence between these results and other molecular. as …