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Full-Text Articles in Life Sciences
A Comparison And Combination Of Plastid Atpb And Rbcl Gene Sequences For Inferring Phylogenetic Relationships Within Orchidaceae, Kenneth M. Cameron
A Comparison And Combination Of Plastid Atpb And Rbcl Gene Sequences For Inferring Phylogenetic Relationships Within Orchidaceae, Kenneth M. Cameron
Aliso: A Journal of Systematic and Floristic Botany
Parsimony analyses of DNA sequences from the plastid genes atpB and rbcL were completed for 173 species of Orchidaceae (representing 150 different genera) and nine genera from outgroup families in Asparagales. The atpB tree topology is similar to the rbcL tree, although the atpB data contain less homoplasy and provide greater jackknife support than rbcL alone. In combination, the two-gene tree recovers five monophyletic clades corresponding to subfamilies within Orchidaceae, and fully resolves them with moderate to high jackknife support as follows: Epidendroideae are sister to Orchidoideae, followed by Cypripedioideae, then Vanilloideae, and with …
Phylogeny Of Agavaceae Based On Ndhf, Rbcl, And Its Sequences, David J. Bogler, J. Chris Pires, Javier Francisco-Ortega
Phylogeny Of Agavaceae Based On Ndhf, Rbcl, And Its Sequences, David J. Bogler, J. Chris Pires, Javier Francisco-Ortega
Aliso: A Journal of Systematic and Floristic Botany
Great advances have been made in our understanding of the phylogeny and classification of Agavaceae in the last 20 years. In older systems Agavaceae were paraphyletic due to overemphasis of ovary position or habit. Discovery of a unique bimodal karyotype in Agave and Yucca eventually led to a reexamination of concepts and relationships in all the lilioid monocots, which continues to the present day. Developments in cytogenetics, microscopy, phylogenetic systematics, and most recently DNA technology have led to remarkable new insights. Large-scale rbcL sequence studies placed Agavaceae with the core Asparagales and identified closely related taxa. Analysis of cpDNA …
Subtribal Relationships In Tribe Tradescantieae (Commelinaceae)Based On Molecular And Morphological Data, Dylan J. Wade, Timothy M. Evans, Robert B. Faden
Subtribal Relationships In Tribe Tradescantieae (Commelinaceae)Based On Molecular And Morphological Data, Dylan J. Wade, Timothy M. Evans, Robert B. Faden
Aliso: A Journal of Systematic and Floristic Botany
Tribe Tradescantieae (Commelinaceae) consists of seven subtribes and 25 genera. Previous attempts to evaluate phylogenetic relationships within the group using morphology or the chloroplast-encoded rbcL have either been highly homoplasious (morphology) or provided only weak support for subtribal relationships due to insufficient variability (rbcL). In this study, phylogenetic analysis of nucleotide sequence data from the chloroplast-encoded ndhF and rbcL genes, as well as 47 morphological and anatomical characters, were used to evaluate relationships within and among the subtribes of Tradescantieae. The addition of ndhF resulted in a more highly resolved phylogeny and greater bootstrap …