J. Columbus

Publications52
h-index19
Citations1,023
Highly Influential Citations91
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Anatomical enablers and the evolution of C4 photosynthesis in grasses
C4 photosynthesis is a series of anatomical and biochemical modifications to the typical C3 pathway that increases the productivity of plants in warm, sunny, and dry conditions. Despite its… Expand
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PHYLOGENETICS OF ANDROPOGONEAE (POACEAE: PANICOIDEAE) BASED ON NUCLEAR RIBOSOMAL INTERNAL TRANSCRIBED SPACER AND CHLOROPLAST trnL-F SEQUENCES
Phylogenetic relationships among 85 species representing 35 genera in the grass tribe Andropogoneae were estimated from maximum parsimony and Bayesian analyses of nuclear ITS and chloroplast trnL-F… Expand
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Phylogenetics of Chloridoideae (Gramineae): a Preliminary Study Based on Nuclear Ribosomal Internal Transcribed Spacer and Chloroplast trnL–F Sequences
The phylogeny of Chloridoideae (Gramineae) was inferred from parsimony analyses of DNA sequences from two genomes-the chloroplast tmL intron, trnL 3' exon, and trnL-F intergenic spacer, and the… Expand
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Molecular phylogenetics of suborder Cactineae (Caryophyllales), including insights into photosynthetic diversification and historical biogeography.
UNLABELLED PREMISE OF THE STUDY Phylogenetic relationships were investigated among the eight families (Anacampserotaceae, Basellaceae, Cactaceae, Didiereaceae, Halophytaceae, Montiaceae,… Expand
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Phylogenetic Relationships in Cariceae (Cyperaceae) Based on ITS (nrDNA) and trnT-L-F (cpDNA) Region Sequences: Assessment of Subgeneric and Sectional Relationships in Carex with Emphasis on Section…
Abstract With approximately 2,000 species, Carex is the largest genus in the Cyperaceae and is one of the most widespread genera in the world. Relationships within Carex and among the genera of the… Expand
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Molecular phylogenetics, historical biogeography, and chromosome number evolution of Portulaca (Portulacaceae).
Portulaca is the only genus in Portulacaceae and has ca. 100 species distributed worldwide, mainly in the tropics and subtropics. Molecular data place the genus as one of the closest relatives of… Expand
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CLADISTIC PARSIMONY ANALYSIS OF INTERNAL TRANSCRIBED SPACER REGION (NRDNA)SEQUENCES OF BOUTELOUA AND RELATIVES (GRAMINEAE : CHLORIDOIDEAE)
The primary goal of the study was to estimate the phylogeny of Boute/oua and relatives (Gramineae: Chloridoideae) employing cladistic parsimony analysis of nuclear ribosomal internal transcribed… Expand
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Classification and Biogeography of New World Grasses: Chloridoideae
Subfamily Chloridoideae (Poaceae) in the New World includes 72 genera (61 native, 11 introduced), 678 species (607 native), and, including intraspecific taxa, 817 total taxa. The five largest genera… Expand
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Proposal for an Expanded Distichlis (Poaceae, Chloridoideae): Support from Molecular, Morphological, And Anatomical Characters
Abstract The Distichlis clade comprises Distichlis (7 species), Monanthochloë (2), and Reederochloa (1). All species except D. distichophylla (endemic to Australia) and D. spicata (widespread in the… Expand
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Phylogenetics of Bouteloua and relatives (Gramineae: Chloridoideae): cladistic parsimony analysis of internal transcribed spacer (nrDNA) and trnL-F (cpDNA) sequences.
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