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Recent Synchronous Radiation of a Living Fossil
It is shown that cycads underwent a near synchronous global rediversification beginning in the late Miocene, followed by a slowdown toward the Recent, rejecting the hypothesized role of dinosaurs in generating extant diversity and the designation of today’s cycad species as living fossils. Expand
Hemisphere-scale differences in conifer evolutionary dynamics
The abundance of recent divergences in northern clades may reflect complex patterns of migration and range shifts during climatic cycles over the later Neogene leading to elevated rates of speciation and extinction, whereas the scattered persistence of mild, wetter habitats in the Southern Hemisphere may have favored the survival of older lineages. Expand
Hydatellaceae identified as a new branch near the base of the angiosperm phylogenetic tree
It is shown that Hydatellaceae, a small family of dwarf aquatics that were formerly interpreted as monocots, are instead a highly modified and previously unrecognized ancient lineage of angiosperms, indicating that water lilies are part of a larger lineage that evolved more extreme and diverse modifications for life in an aquatic habitat than previously recognized. Expand
We present an analysis of supra-familial relationships of monocots based on a combined matrix of nuclear ISS and partial 26S rONA, plastid atpB, matK, ndhF, and rbcL, and mitochondrial atpl DNAExpand
Multigene Analyses of Monocot Relationships
Analysis of supra-familial relationships of monocots based on a combined matrix of nuclear 18S and partial 26S rDNA, plastid atpB, matK, ndhF, and rbcL, and mitochondrial atpl DNA sequences provides higher bootstrap support for nearly all relationships than in previously published analyses. Expand
The effect of metformin and thiazolidinedione use on lung cancer in diabetics
The use of metformin and/or the TZDs is associated with a lower likelihood of developing lung cancer in diabetic patients, and diabetics who develop lung cancer while receiving meetformin may have a more aggressive cancer phenotype. Expand
Widespread Triploidy in Western North American Aspen (Populus tremuloides)
It is demonstrated that triploidy is highest in unglaciated, drought-prone regions of North America, where the largest clone sizes have been reported for this species, and cytotype may be a significant and previously overlooked factor in recent patterns of high aspen mortality in the southwestern portion of the species range. Expand
Robust Inference of Monocot Deep Phylogeny Using an Expanded Multigene Plastid Data Set
Despite substantial variation in the overall rate of molecular evolution among lineages, inferred amounts of change among codon-position data partitions are correlated with each other across the monocot tree, consistent with low incongruence between these partitions. Expand
Phylogenetic Relationships of Monocots Based on the Highly Informative Plastid Gene ndhF
The resulting tree is highly resolved and places commelinids sister to Asparagales, with both sister to Liliales-Pandanales in the strict consensus; Pandanales are sister to Dioscoreale in the bootstrap majority-rule tree, just above Petrosaviales. Expand
Inference of higher-order conifer relationships from a multi-locus plastid data set
The broad backbone of conifer phylogeny is reconstructed from a survey of 15–17 plastid loci and associated noncoding regions from exemplar conifer species, and the deepest phylogenetic split is inferred to be between Pinaceae and all other conifers (Cupressophyta). Expand