Browsing by Author "Davis, Charles"
Now showing items 1-20 of 42
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The abiotic and biotic drivers of rapid diversification in Andean bellflowers (Campanulaceae)
Lagomarsino, Laura P.; Condamine, Fabien L.; Antonelli, Alexandre; Mulch, Andreas; Davis, Charles C. (John Wiley and Sons Inc., 2016)Summary The tropical Andes of South America, the world's richest biodiversity hotspot, are home to many rapid radiations. While geological, climatic, and ecological processes collectively explain such radiations, their ... -
A Complete Generic Phylogeny of Malpighiaceae Inferred from Nucleotide Sequence Data and Morphology
Davis, Charles Cavender; Anderson, William R. (Botanical Society of America, 2010)Premise of the study: The Malpighiaceae include ∼1300 tropical flowering plant species in which generic definitions and intergeneric relationships have long been problematic. The goals of our study were to resolve relationships ... -
Deep Genetic Divergence between Disjunct Refugia in the Arctic-Alpine King’s Crown, Rhodiola integrifolia (Crassulaceae)
DeChaine, Eric G.; Forester, Brenna R.; Schaefer, Hanno; Davis, Charles C. (Public Library of Science, 2013)Despite the strength of climatic variability at high latitudes and upper elevations, we still do not fully understand how plants in North America that are distributed between Arctic and alpine areas responded to the ... -
Developmental origins of the world's largest flowers, Rafflesiaceae
Nikolov, L. A.; Endress, P. K.; Sugumaran, M.; Sasirat, S.; Vessabutr, S.; Kramer, Elena M.; Davis, Charles Cavender (Proceedings of the National Academy of Sciences, 2013)Rafflesiaceae, which produce the world’s largest flowers, have captivated the attention of biologists for nearly two centuries. Despite their fame, however, the developmental nature of the floral organs in these giants has ... -
Divergent genetic mechanisms underlie reversals to radial floral symmetry from diverse zygomorphic flowered ancestors
Zhang, Wenheng; Steinmann, Victor W.; Nikolov, Lachezar; Kramer, Elena M.; Davis, Charles C. (Frontiers Media S.A., 2013)Malpighiaceae possess flowers with a unique bilateral symmetry (zygomorphy), which is a hypothesized adaptation associated with specialization on neotropical oil bee pollinators. Gene expression of two representatives of ... -
Ecology and Evolution of the Ferns of Moorea and Tahiti, French Polynesia
Nitta, Joel H. (2016-09-12)Ferns are the only major lineage of land plants with haploid (gametophyte) and diploid (sporophyte) stages that can grow separately from each other for extended periods. Gametophytes, as the sexual stage, are critical to ... -
Elatinaceae are Sister to Malpighiaceae; Peridiscaceae Belong to Saxifragales
Davis, Charles; Chase, Mark W. (Botanical Society of America, 2004)Phylogenetic data from plastid (ndhF and rbcL) and nuclear (PHYC) genes indicate that, within the order Malpighiales, Elatinaceae are strongly supported as sister to Malpighiaceae. There are several putative morphological ... -
The establishment of Central American migratory corridors and the biogeographic origins of seasonally dry tropical forests in Mexico
Willis, Charles G.; Franzone, Brian F.; Xi, Zhenxiang; Davis, Charles C. (Frontiers Media S.A., 2014)Biogeography and community ecology can mutually illuminate the formation of a regional species pool or biome. Here, we apply phylogenetic methods to a large and diverse plant clade, Malpighiaceae, to characterize the ... -
Estimating phylogenetic trees from genome-scale data
Liu, Liang; Xi, Zhenxiang; Wu, Shaoyuan; Davis, Charles Cavender; Edwards, Scott V. (Wiley-Blackwell, 2015)The heterogeneity of signals in the genomes of diverse organisms poses challenges for traditional phylogenetic analysis. Phylogenetic methods known as “species tree” methods have been proposed to directly address one ... -
Expansion of Diplopterys at the Expense of Banisteriopsis (Malpighiaceae)
Anderson, William R.; Davis, Charles (Harvard University Herbaria, 2006)Phylogenetic analyses of molecular and morphological data have shown the genus <i>Banisteriopsis</i> to be polyphyletic and the genus <i>Diplopterys</i> to be nested within <i>Banisteriopsis</i> subg. <i>Pleiopterys</i>, ... -
Explosive Radiation of Malpighiales Supports a Mid-Cretaceous Origin of Modern Tropical Rain Forests
Davis, Charles; Webb, Campbell O.; Wurdack, Kenneth J.; Jaramillo, Carlos A.; Donoghue, Michael J. (University of Chicago Press, 2005)Fossil data have been interpreted as indicating that Late Cretaceous tropical forests were open and dry adapted and that modern closed-canopy rain forest did not originate until after the Cretaceous-Tertiary (K/T) boundary. ... -
Favorable Climate Change Response Explains Non-Native Species' Success in Thoreau's Woods
Willis, Charles G.; Ruhfel, Brad R; Primack, Richard B.; Miller-Rushing, Abraham J.; Losos, Jonathan; Davis, Charles (Public Library of Science, 2010)Invasive species have tremendous detrimental ecological and economic impacts. Climate change may exacerbate species invasions across communities if non-native species are better able to respond to climate changes than ... -
Floral Evolution: Dramatic Size Change was Recent and Rapid in the World's Largest Flowers
Davis, Charles Cavender (Elsevier, 2008)Recent studies clarifying the closest relatives of the world's largest flowers, Rafflesiaceae, whose floral diameters range from ∼11 to ∼100 cm, indicated that they evolved from tiny-flowered ancestors in a burst of floral ... -
Floral Symmetry Genes and the Origin and Maintenance of Zygomorphy in a Plant-pollinator Mutualism
Zhang, Wenheng; Kramer, Elena M.; Davis, Charles Cavender (National Academy of Sciences, 2010)The evolution of floral zygomorphy is an important innovation in flowering plants and is thought to arise principally from specialization on various insect pollinators. Floral morphology of neotropical Malpighiaceae is ... -
Gene Transfer from a Parasitic Flowering Plant to a Fern
Davis, Charles Cavender; Anderson, William R.; Wurdack, Kenneth J. (Royal Society of London, 2011)The rattlesnake fern (Botrychium virginianum (L.) Sw.) is obligately mycotrophic and widely distributed across the northern hemisphere. Three mitochondrial gene regions place this species with other ferns in Ophioglossaceae, ... -
High-latitude Tertiary Migrations of an Exclusively Tropical Clade: Evidence from Malpighiaceae
Davis, Charles; Fritsch, Peter W.; Bell, Charles D.; Mathews, Sarah (University of Chicago Press, 2004)Explanations of tropical intercontinental disjunctions involving South America and Africa typically invoke vicariance of western Gondwanan biotas or long-distance dispersal. However, many plant groups originated and ... -
Horizontal transfer of expressed genes in a parasitic flowering plant
Xi, Zhenxiang; Bradley, Robert K; Wurdack, Kenneth J; Wong, KM; Sugumaran, M; Bomblies, Kirsten; Rest, Joshua S; Davis, Charles Cavender (BioMed Central, 2012)Background: Recent studies have shown that plant genomes have potentially undergone rampant horizontal gene transfer (HGT). In plant parasitic systems HGT appears to be facilitated by the intimate physical association ... -
Host-to-parasite Gene Transfer in Flowering Plants: Phylogenetic Evidence from Malpighiales
Davis, Charles Cavender; Wurdack, Kenneth J. (American Academy of Arts and Sciences, 2004)Horizontal gene transfer (HGT) between sexually unrelated species has recently been documented for higher plants, but mechanistic explanations for HGTs have remained speculative. We show that a parasitic relationship may ... -
Laurasian Migration Explains Gondwanan Disjunctions: Evidence from Malpighiaceae
Davis, Charles Cavender; Bell, Charles D.; Matthews, Sarah; Donoghue, Michael J. (National Academy of Sciences, 2002)Explanations for biogeographic disjunctions involving South America and Africa typically invoke vicariance of western Gondwanan biotas or long distance dispersal. These hypotheses are problematical because many groups ... -
Madagasikaria (Malpighiaceae): A New Genus from Madagascar with Implications for Floral Evolution in Malpighiaceae
Davis, Charles (Botanical Society of America, 2002)<i>Madagasikaria andersonii</i> is described here as a new genus and species of Malpighiaceae from Madagascar. The phylogenetic placement of Madagasikaria was estimated by using combined data from <i>ndhF</i> and <i>trnL-F</i> ...