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Full-Text Articles in Life Sciences
Phylogenetic Evaluation Of Series Delimitations In Section Palmata (Acer, Aceroideae, Sapindaceae) Based On Sequences Of Nuclear And Chloroplast Genes, Jianhua Li
Aliso: A Journal of Systematic and Floristic Botany
Acer section Palmata (Japanese maples) is the largest section within the genus; however, series delimitations within section Palmata have not been evaluated in a phylogenetic context. Both maximum parsimony and maximum likelihood analyses of DNA sequence data of nuclear rDNA ITS and chloroplast genes (ndhF, trnL-trnF, and psbA-trnH) from 23 species of Acer section Palmata show that traditional series do not form individual clades. Results from this study support the most recent taxonomic treatment of Acer that does not recognize any series in section Palmata. Nuclear and chloroplast phylogenies are significantly …
Phylogeny Of Abildgaardieae (Cyperaceae) Inferred From Its And Trnl–F Data, Kioumars Ghamkhar, Adam D. Marchant, Karen L. Wilson, Jeremy J. Bruhl
Phylogeny Of Abildgaardieae (Cyperaceae) Inferred From Its And Trnl–F Data, Kioumars Ghamkhar, Adam D. Marchant, Karen L. Wilson, Jeremy J. Bruhl
Aliso: A Journal of Systematic and Floristic Botany
Within the tribe Abildgaardieae, the relationships between Fimbristylis and its relatives have not been certain, and the limits of Fimbristylis have been unclear, with Bulbostylis and Abildgaardia variously combined with it and each other. The relationships and limits of tribes Abildgaardieae and Arthrostylideae and their genera were evaluated across 49 representative species using parsimony and maximum likelihood analyses of ITS (nuclear ribosomal) and trnL–F (plastid) DNA sequence data separately and combined. The evolutionary reconstructions derived from sequences of cpDNA and nrDNA disagree about the position of tribe Arthrostylideae relative to Abildgaardieae; Arthrostylis and Actinoschoenus are either nested within Abildgaardieae …
Systematics Of The Tribe Stipeae (Gramineae) Using Molecular Data, Surrey Jacobs, Randall Bayer, Joy Everett, Mirta Arriaga, Mary Barkworth, Alexandru Sabin-Badereau, Amelia Torres, Francisco Vázquez, Neil Bagnall
Systematics Of The Tribe Stipeae (Gramineae) Using Molecular Data, Surrey Jacobs, Randall Bayer, Joy Everett, Mirta Arriaga, Mary Barkworth, Alexandru Sabin-Badereau, Amelia Torres, Francisco Vázquez, Neil Bagnall
Aliso: A Journal of Systematic and Floristic Botany
Internal transcribed spacer (ITS) sequences have been determined for a wide range of stipoid grasses (Poaceae, Pooideae, Stipeae). Nardus was confirmed as the most appropriate outgroup. Anisopogon is consistently included among the stipoid genera. Lithachne and Oryza form a clade and are clearly not close to Stipeae, and there is no support for including Brachyelytrum within Stipeae. Ampelodesmos and Diarrhena do appear among the core taxa in some analyses, but their positions are unstable and the evidence for retaining them is limited. So far there is inadequate support for rejecting them from Stipeae, so they should be included in any …
A Systematic Approach To Subtribe Loliinae (Poaceae: Pooideae) Based On Phylogenetic Evidence, Pilar Catalán, Pedro Torrecilla, José A. López-Rodríguez, Jochen Müller, Clive A. Stace
A Systematic Approach To Subtribe Loliinae (Poaceae: Pooideae) Based On Phylogenetic Evidence, Pilar Catalán, Pedro Torrecilla, José A. López-Rodríguez, Jochen Müller, Clive A. Stace
Aliso: A Journal of Systematic and Floristic Botany
Loliinae (Poaceae, Pooideae) encompass a large group of genera closely related to Festuca, the largest genus in the subtribe, which as traditionally circumscribed has been shown to be highly paraphyletic. In this investigation we combined molecular and morphological data representing 20 genera of Loliinae and closely related subtribes. Combined analysis of nucleotide sequences from the nuclear ITS and chloroplast trnL–F regions and structural characters recovered a consensus topology that shows Loliinae to be monophyletic and possessing two main clades—the fine-leaved Festuca clade that includes Ctenopsis, Micropyrum, Narduroides, Psilurus, Vulpia, and Wangenheimia, and …
Phylogenetics Of Chloridoideae (Gramineae): A Preliminary Study Based On Nuclear Ribosomal Internal Transcribed Spacer And Chloroplast Trnl–F Sequences, J. Travis Columbus, Rosa Cerros-Tlatilpa, Michael S. Kinney, Maria Elena Siqueiros-Delgado, Hester L. Bell, M. Patrick Griffith, Nancy F. Refulio-Rodriguez
Phylogenetics Of Chloridoideae (Gramineae): A Preliminary Study Based On Nuclear Ribosomal Internal Transcribed Spacer And Chloroplast Trnl–F Sequences, J. Travis Columbus, Rosa Cerros-Tlatilpa, Michael S. Kinney, Maria Elena Siqueiros-Delgado, Hester L. Bell, M. Patrick Griffith, Nancy F. Refulio-Rodriguez
Aliso: A Journal of Systematic and Floristic Botany
The phylogeny of Chloridoideae (Gramineae) was inferred from parsimony analyses of DNA sequences from two genomes—the chloroplast trnL intron, trnL 3' exon, and trnL–F intergenic spacer, and the nuclear ribosomal internal transcribed spacer region (ITS1 + 5.8S + ITS2). Eighty species representing 66 chloridoid genera were sampled, including all but four of the native New World genera. Analyses of the individual and combined data sets were performed. The phylogenies were found to be highly congruent. Of the four tribes and seven subtribes of Chloridoideae sensu Clayton and Renvoize (1986) whose phylogenetic status could be tested with our …
Phylogeny And Biogeography Of Endemic Festuca (Poaceae) From New Zealand Based On Nuclear (Its) And Chloroplast (Trnl–Trnf) Nucleotide Sequences, Kelvin M. Lloyd, Angela M. Hunter, David A. Orlovich, Suzanne J. Draffin, Alan V. Stewart, William G. Lee
Phylogeny And Biogeography Of Endemic Festuca (Poaceae) From New Zealand Based On Nuclear (Its) And Chloroplast (Trnl–Trnf) Nucleotide Sequences, Kelvin M. Lloyd, Angela M. Hunter, David A. Orlovich, Suzanne J. Draffin, Alan V. Stewart, William G. Lee
Aliso: A Journal of Systematic and Floristic Botany
We investigated the phylogenetic relationships of the endemic New Zealand (NZ) species of Festuca (Poaceae, Pooideae) by assessing sequence variation from the nuclear internal transcribed spacers (ITS) and a chloroplast intergenic spacer (trnL–trnF) and by measuring DNA content using flow cytometry. The ITS and trnL–trnF data sets were congruent in showing that the NZ species of Festuca have two origins. One group, containing F. coxii, F. luciarum, F. multinodis, and F. ultramafica, is closely related to Festuca sect. Aulaxyper. The other group includes a clade of five endemic …
Molecular Phylogenetics Of Bromus (Poaceae: Pooideae) Based On Chloroplast And Nuclear Dna Sequence Data, Jeffery M. Saarela, Paul M. Peterson, Ryan M. Keane, Jacques Cayouette, Sean W. Graham
Molecular Phylogenetics Of Bromus (Poaceae: Pooideae) Based On Chloroplast And Nuclear Dna Sequence Data, Jeffery M. Saarela, Paul M. Peterson, Ryan M. Keane, Jacques Cayouette, Sean W. Graham
Aliso: A Journal of Systematic and Floristic Botany
We conducted a phylogenetic analysis to characterize relationships among Bromus and test the monophyly of five of the seven morphologically distinct groups within Bromus (Poaceae: Pooideae) that have been treated as sections, subgenera, or genera. We sequenced the chloroplast trnL (UAA) intron, the 3'-end of the chloroplast ndhF gene, and the internal transcribed spacers (ITS) of the nuclear ribosomal DNA region for 46 species that represent a large proportion of the morphological and geographical diversity in the genus. Independent analyses of plastid and nuclear ribosomal data identified several lineages in Bromus, but there is some evidence of …