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- 1 - Plant Development & Biomechanics (19)
- 2 - Phloem Transport & Forisomes (12)
- Auxin (8)
- Ca2+-dependent contractility (8)
- Forisome (6)
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- Phloem transport (6)
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- 4 - Evolutionary Biology & Paleontology (3)
- Coleoptile (3)
- Microfluidics (3)
- Phloem (3)
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- Sieve element (3)
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Articles 1 - 30 of 44
Full-Text Articles in Life Sciences
Another Look At The Root Of The Angiosperms Reveals A Familiar Tale, Bryan Drew, Brad Ruhfel, Stephen Smith, Michael Moore, Barbara Briggs, Matthew Gitzendanner, Pamela Soltis, Douglas Soltis
Another Look At The Root Of The Angiosperms Reveals A Familiar Tale, Bryan Drew, Brad Ruhfel, Stephen Smith, Michael Moore, Barbara Briggs, Matthew Gitzendanner, Pamela Soltis, Douglas Soltis
Brad R. Ruhfel
Since the advent of molecular phylogenetics more than 25 years ago, a major goal of plant systematists has been to discern the root of the angiosperms. Although most studies indicate that Amborella trichopoda is sister to all remaining extant flowering plants, support for this position has varied with respect to both the sequence data sets and analyses employed. Recently, Goremykin et al. (2013) questioned the “Amborella-sister hypothesis” using a “noise-reduction” approach and reported a topology with Amborella + Nymphaeales (water lilies) sister to all remaining angiosperms. Through a series of analyses of both plastid genomes and mitochondrial genes, we continue …
Digitization Of Herbarium Specimens, A Collaborative Process, Lawrence Schmidt
Digitization Of Herbarium Specimens, A Collaborative Process, Lawrence Schmidt
Larry O Schmidt
Digital collections in museums, libraries, and other agencies are expanding rapidly. Digitization of books, maps, photographs, and other objects for both preservation and dissemination are changing the way libraries work. Librarians who have, historically, worked with collections in print formats are anxious to move toward digital content as the wave of the future. Rather than stand on the sidelines and watch as the digital movement passes by, librarians need to be proactive and create digital content using both collections within the libraries’ walls and proactively seek opportunities to work collaboratively with stakeholders outside of the libraries’ hallowed halls. The creation …
Combined Morphological And Molecular Phylogeny Of The Clusioid Clade (Malpighiales) And The Placement Of The Ancient Rosid Macrofossil Paleoclusia, Brad Ruhfel, Peter Stevens, Charles Davis
Combined Morphological And Molecular Phylogeny Of The Clusioid Clade (Malpighiales) And The Placement Of The Ancient Rosid Macrofossil Paleoclusia, Brad Ruhfel, Peter Stevens, Charles Davis
Brad R. Ruhfel
Premise of research. The clusioid clade is a member of the large rosid order Malpighiales and contains∼1900 species in five families: Bonnetiaceae, Calophyllaceae, Clusiaceae sensu stricto (s.s.), Hypericaceae, and Podostemaceae. Despite recent efforts to clarify their phylogenetic relationships using molecular data, no such data are available for several critical taxa, including especially Hypericum ellipticifolium (previously recognized in Lianthus), Lebrunia, Neotatea, Thysanostemon, and the second-oldest rosid fossil (∼90 Ma), Paleoclusia chevalieri. Here, we (i) assess congruence between phylogenies inferred from morphological and molecular data, (ii) analyze morphological and molecular data simultaneously to place taxa lacking molecular data, and (iii) use ancestral …
Rocky Mountain Region Digital Herbarium, Larry Schmidt
Rocky Mountain Region Digital Herbarium, Larry Schmidt
Larry O Schmidt
No abstract provided.
Plant Classification And Nomenclature In Ndumba, Papua New Guinea Highlands, Terence Hays
Plant Classification And Nomenclature In Ndumba, Papua New Guinea Highlands, Terence Hays
Terence Hays
Traditionally, the terms "ethnobotany" and "ethnozoology" have designated little more than the study of plant and animal utilization. In the past two decades, however, the ways in which the components of given biological environments are locally perceived and categorized have received increasing attention. Not only has the study of ethnobiological classification been recognized as essential to a wide variety of ethnographic concerns (cf. Frake 1962; Bulmer 1967), but the discovery of possible universals in folk classification systems promises to enrich our understanding of human cognitive processes as well (Berlin et al. 1973; Brown 1977).
The paucity of comprehensive studies of …
Phylogenomics And A Posteriori Data Partitioning Resolve The Cretaceous Angiosperm Radiation Malpighiales, Zhenxiang Xi, Brad Ruhfel, Hanno Schaefer, André Amorim, M. Sugumaran, Kenneth Wurdack, Peter Endress, Merran Matthews, Peter Stevens, Sarah Mathews, Charles Davis
Phylogenomics And A Posteriori Data Partitioning Resolve The Cretaceous Angiosperm Radiation Malpighiales, Zhenxiang Xi, Brad Ruhfel, Hanno Schaefer, André Amorim, M. Sugumaran, Kenneth Wurdack, Peter Endress, Merran Matthews, Peter Stevens, Sarah Mathews, Charles Davis
Brad R. Ruhfel
The angiosperm order Malpighiales includes ∼16,000 species and constitutes up to 40% of the understory tree diversity in tropical rain forests. Despite remarkable progress in angiosperm systematics during the last 20 y, relationships within Malpighiales remain poorly resolved, possibly owing to its rapid rise during the mid-Cretaceous. Using phylogenomic approaches, including analyses of 82 plastid genes from 58 species, we identified 12 additional clades in Malpighiales and substantially increased resolution along the backbone. This greatly improved phylogeny revealed a dynamic history of shifts in net diversification rates across Malpighiales, with bursts of diversification noted in the Barbados cherries (Malpighiaceae), cocas …
Extreme Environments Select For Reproductive Assurance: Evidence From Evening Primroses (Oenothera), Margaret Evans, David Hearn, Kathryn Theiss, Karen Cranston, Kent Holsinger, Michael Donoghue
Extreme Environments Select For Reproductive Assurance: Evidence From Evening Primroses (Oenothera), Margaret Evans, David Hearn, Kathryn Theiss, Karen Cranston, Kent Holsinger, Michael Donoghue
Kent E Holsinger
• Competing evolutionary forces shape plant breeding systems (e.g. inbreeding depression, reproductive assurance). Which of these forces prevails in a given population or species is predicted to depend upon such factors as life history, eco- logical conditions, and geographical context. Here, we examined two such predictions: that self-compatibility should be associated with the annual life history or extreme climatic conditions.
• We analyzed data from a clade of plants remarkable for variation in breeding system, life history and climatic conditions (Oenothera, sections Anogra and Kleinia, Onagraceae). We used a phylogenetic comparative approach and Bayesian or hybrid Bayesian tests to account …
Forisome Performance In Artificial Sieve Tubes, Michael Knoblauch, Mike Stubenrauch, Aart J.E. Van Bel, Winfried S. Peters
Forisome Performance In Artificial Sieve Tubes, Michael Knoblauch, Mike Stubenrauch, Aart J.E. Van Bel, Winfried S. Peters
Winfried S. Peters
Effect Of Cercosporella Rubi On Blackberry Floral Bud Development, Kenneth Curry
Effect Of Cercosporella Rubi On Blackberry Floral Bud Development, Kenneth Curry
Kenneth J. Curry
Rosette, caused by the fungus Cercosporella rubi, is an important blackberry disease in the southeastern United States. This disease severely reduces fruit production, and its management has been erratic due to a limited understanding of the host-pathogen relationship. In this study, we expand on previous histological investigations of the development of C. rubi on blackberry at tissue and cellular levels from floral bud initiation through senescence of the flower. Symptomatic and asymptomatic floral buds were examined with light microscopy and both scanning and transmission electron microscopy (SEM and TEM, respectively). Fungal development on the surface of floral buds was …
Geometric Constraints And The Anatomical Interpretation Of Twisted Plant Organ Phenotypes, Renate Weizbauer, Winfried S. Peters, Burkhard Schulz
Geometric Constraints And The Anatomical Interpretation Of Twisted Plant Organ Phenotypes, Renate Weizbauer, Winfried S. Peters, Burkhard Schulz
Winfried S. Peters
Plant-Animal Interactions, W. Abrahamson, T. Taylor
Plant-Animal Interactions, W. Abrahamson, T. Taylor
Warren G. Abrahamson, II
No abstract provided.
Münch, Morphology, Microfluidics – Our Structural Problem With The Phloem [Review Article], Michael Knoblauch, Winfried S. Peters
Münch, Morphology, Microfluidics – Our Structural Problem With The Phloem [Review Article], Michael Knoblauch, Winfried S. Peters
Winfried S. Peters
Archaeobotany In Australia And New Guinea: Practice, Potential And Prospects, Tim Denham, Jennifer Atchison, Jeremy Austin, Sheahan Bestel, Doreen Bowdery, Alison Crowther, Nic Dolby, Andrew Fairbairn, Judith Field, Amanda Kennedy, Carol Lentfer, Carney Matheson, Sue Nugent, Jeffrey Parr, Matiu Prebble, Gail Robertson, Jim Specht, Robin Torrence, Huw Barton, Richard Fullagar, Simon Haberle, Mark Horrocks, Tara Lewis, Peter Matthews
Archaeobotany In Australia And New Guinea: Practice, Potential And Prospects, Tim Denham, Jennifer Atchison, Jeremy Austin, Sheahan Bestel, Doreen Bowdery, Alison Crowther, Nic Dolby, Andrew Fairbairn, Judith Field, Amanda Kennedy, Carol Lentfer, Carney Matheson, Sue Nugent, Jeffrey Parr, Matiu Prebble, Gail Robertson, Jim Specht, Robin Torrence, Huw Barton, Richard Fullagar, Simon Haberle, Mark Horrocks, Tara Lewis, Peter Matthews
Jeffrey Parr
Archaeobotany is the study of plant remains from archaeological contexts. Despite Australasian research being at the forefront of several methodological innovations over the last three decades, archaeobotany is now a relatively peripheral concern to most archaeological projects in Australia and New Guinea. In this paper, many practicing archaeobotanists working in these regions argue for a more central role for archaeobotany in standard archaeological practice. An overview of archaeobotanical techniques and applications is presented, the potential for archaeobotany to address key historical research questions is indicated, and initiatives designed to promote archaeobotany and improve current practices are outlined. ,
Legume Phylogeny And The Evolution Of A Unique Contractile Apparatus That Regulates Phloem Transport, Winfried Peters, Claudia Hanakam, Dietmar Haffer, Aart Van Bel, Michael Knoblauch
Legume Phylogeny And The Evolution Of A Unique Contractile Apparatus That Regulates Phloem Transport, Winfried Peters, Claudia Hanakam, Dietmar Haffer, Aart Van Bel, Michael Knoblauch
Winfried S. Peters
My Embarrassment At Not Knowing Heinich, Winfried S. Peters
My Embarrassment At Not Knowing Heinich, Winfried S. Peters
Winfried S. Peters
Life History, Sexual Dimorphism And 'Ornamental' Feathers In The Mesozoic Bird Confuciusornis Sanctus., Winfried S. Peters, Dieter Stefan Peters
Life History, Sexual Dimorphism And 'Ornamental' Feathers In The Mesozoic Bird Confuciusornis Sanctus., Winfried S. Peters, Dieter Stefan Peters
Winfried S. Peters
Gfp Tagging Of Sieve Element Occlusion (Seo) Proteins Results In Green Fluorescent Forisomes, Hélène Pélissier, Winfried Peters, Ray Collier, Aart Van Bel, Michael Knoblauch
Gfp Tagging Of Sieve Element Occlusion (Seo) Proteins Results In Green Fluorescent Forisomes, Hélène Pélissier, Winfried Peters, Ray Collier, Aart Van Bel, Michael Knoblauch
Winfried S. Peters
Anisotropic Contraction In Forisomes: Simple Models Won't Fit, Winfried Peters, Michael Knoblauch, Stephen Warmann, William Pickard, Amy Shen
Anisotropic Contraction In Forisomes: Simple Models Won't Fit, Winfried Peters, Michael Knoblauch, Stephen Warmann, William Pickard, Amy Shen
Winfried S. Peters
Tailed Forisomes Of Canavalia Gladiata: A New Model To Study Ca2+-Driven Protein Contractility, Winfried Peters, Michael Knoblauch, Stephen Warmann, Reinhard Schnetter, Amy Shen, William Pickard
Tailed Forisomes Of Canavalia Gladiata: A New Model To Study Ca2+-Driven Protein Contractility, Winfried Peters, Michael Knoblauch, Stephen Warmann, Reinhard Schnetter, Amy Shen, William Pickard
Winfried S. Peters
Reversible Birefringence Suggests A Role For Molecular Self-Assembly In Forisome Contractility, Winfried Peters, Reinhard Schnetter, Michael Knoblauch
Reversible Birefringence Suggests A Role For Molecular Self-Assembly In Forisome Contractility, Winfried Peters, Reinhard Schnetter, Michael Knoblauch
Winfried S. Peters
The Geometry Of The Forisome–Sieve Element–Sieve Plate Complex In The Phloem Of Vicia Faba L. Leaflets, Winfried Peters, Aart Van Bel, Michael Knoblauch
The Geometry Of The Forisome–Sieve Element–Sieve Plate Complex In The Phloem Of Vicia Faba L. Leaflets, Winfried Peters, Aart Van Bel, Michael Knoblauch
Winfried S. Peters
Forisome Based Biomimetic Smart Materials, Amy Shen, Benjamin Hamlington, Michael Knoblauch, Winfried Peters, William Pickard
Forisome Based Biomimetic Smart Materials, Amy Shen, Benjamin Hamlington, Michael Knoblauch, Winfried Peters, William Pickard
Winfried S. Peters
Prospective Energy Densities In The Forisome, A New Smart Material, William Pickard, Michael Knoblauch, Winfried Peters, Amy Shen
Prospective Energy Densities In The Forisome, A New Smart Material, William Pickard, Michael Knoblauch, Winfried Peters, Amy Shen
Winfried S. Peters
Growth Rate Gradients And Extracellular Ph In Roots: How To Control An Explosion, Winfried S. Peters
Growth Rate Gradients And Extracellular Ph In Roots: How To Control An Explosion, Winfried S. Peters
Winfried S. Peters
Forisomes, A Novel Type Of Ca2+-Dependent Contractile Protein Motor [Review Article], Michael Knoblauch, Winfried Peters
Forisomes, A Novel Type Of Ca2+-Dependent Contractile Protein Motor [Review Article], Michael Knoblauch, Winfried Peters
Winfried S. Peters
Atp-Independent Contractile Proteins From Plants, Michael Knoblauch, Gundula Noll, Torsten Müller, Dirk Prüfer, Ingrid Schneider-Hüther, Dörte Scharner, Aart Van Bel, Winfried Peters
Atp-Independent Contractile Proteins From Plants, Michael Knoblauch, Gundula Noll, Torsten Müller, Dirk Prüfer, Ingrid Schneider-Hüther, Dörte Scharner, Aart Van Bel, Winfried Peters
Winfried S. Peters
The Biophysics Of Leaf Growth In Salt-Stressed Barley. A Study At The Cell Level., Wieland Fricke, Winfried Peters
The Biophysics Of Leaf Growth In Salt-Stressed Barley. A Study At The Cell Level., Wieland Fricke, Winfried Peters
Winfried S. Peters
Reversible Calcium-Regulated Stopcocks In Legume Sieve Tubes, Michael Knoblauch, Winfried Peters, Katrin Ehlers, Aart Van Bel
Reversible Calcium-Regulated Stopcocks In Legume Sieve Tubes, Michael Knoblauch, Winfried Peters, Katrin Ehlers, Aart Van Bel
Winfried S. Peters
Does Growth Correlate With Turgor-Induced Elastic Strain In Stems? A Re-Evaluation Of De Vries' Classical Experiments, Winfried Peters, Maggie Farm, A. Kopf
Does Growth Correlate With Turgor-Induced Elastic Strain In Stems? A Re-Evaluation Of De Vries' Classical Experiments, Winfried Peters, Maggie Farm, A. Kopf
Winfried S. Peters
The Mechanic State Of “Inner Tissue” In The Growing Zone Of Sunflower Hypocotyls And The Regulation Of Its Growth Rate Following Excision, Winfried Peters, A. Tomos