7 Works

Data from: Aridity shapes cyanogenesis cline evolution in white clover (Trifolium repens L.)

Nicholas J. Kooyers, Lily R. Gage, Amal Al-Lozi & Kenneth M. Olsen
Adaptive differentiation between populations is often proposed to be the product of multiple interacting selective pressures, although empirical support for this is scarce. In white clover, populations show adaptive differentiation in frequencies of cyanogenesis, the ability to produce HCN after tissue damage. This polymorphism arises through independently segregating polymorphisms for the presence/absence of two required cyanogenic components, cyanogenic glucosides and their hydrolyzing enzyme. White clover populations worldwide have evolved a series of recurrent, climate-associated clines,...

Data from: Population genetics and origin of the native North American agricultural weed waterhemp (Amaranthus tuberculatus)

Katherine E. Waselkov & Kenneth M. Olsen
Premise of the study: The evolution of invasiveness has been extensively studied in natural ecosystems; however, far less is known about the evolution of agricultural invasiveness, despite the major economic impact of weeds on crop productivity. Examining the population structure of recently arisen weeds can provide insights into evolutionary avenues to invasion of agroecosystems. Weeds that originate from wild plants are the most common yet least frequently studied type of agricultural invasive. Here we address...

Data from: Human-aided and natural dispersal drive gene flow across the range of an invasive mosquito

Kim A. Medley, David G. Jenkins & Eric A. Hoffman
Human-aided transport is responsible for many contemporary species introductions, yet the contribution of human-aided transport to dispersal within non-native regions is less clear. Understanding dispersal dynamics for invasive species can streamline mitigation efforts by targeting routes that contribute disproportionally to spread. Because of its limited natural dispersal ability, rapid spread of the Asian tiger mosquito (Aedes albopictus) has been attributed to human-aided transport, but until now the relative roles of human-aided and natural movement have...

Data from: Fruiting bodies of the social amoeba Dictyostelium discoideum increase spore transport by Drosophila

Jeff Smith, David C. Queller & Joan E. Strassmann
Background: Many microbial phenotypes are the product of cooperative interactions among cells, but their putative fitness benefits are often not well understood. In the cellular slime mold Dictyostelium discoideum, unicellular amoebae aggregate when starved and form multicellular fruiting bodies in which stress-resistant spores are held aloft by dead stalk cells. Fruiting bodies are thought to be adaptations for dispersing spores to new feeding sites, but this has not been directly tested. Here we experimentally test...

Data from: De novo assembly and comparative analysis of the Ceratodon purpureus transcriptome

Péter Szövényi, Pierre-François Perroud, Aikaterini Symeonidi, Sean Stevenson, Ralph S. Quatrano, Stefan A. Rensing, Andrew C. Cuming & Stuart F. McDaniel
The bryophytes are a morphologically and ecologically diverse group of plants that have recently emerged as major model systems for a variety of biological processes. In particular, the genome sequence of the moss, Physcomitrella patens, has significantly enhanced our understanding of the evolution of developmental processes in land plants. However, to fully explore the diversity within bryophytes, we need additional genomic resources. Here we describe analyses of the transcriptomes of a male and a female...

Data from: Malaysian weedy rice shows its true stripes: wild Oryza and elite rice cultivars shape agricultural weed evolution in Southeast Asia

Beng-Kah Song, Tse-Seng Chuah, Sheh May Tam & Kenneth M. Olsen
Weedy rice is a close relative of domesticated rice (Oryza sativa) that competes aggressively with the crop and limits rice productivity worldwide. Most genetic studies of weedy rice have focused on populations in regions where no reproductively compatible wild Oryza species occur (North America, Europe, northern Asia). Here we examined the population genetics of weedy rice in Malaysia, where wild rice (O. rufipogon) can be found growing in close proximity to cultivated and weedy rice....

Data from: Evolutionary renovation of L/M opsin polymorphism confers a fruit discrimination advantage to ateline New World monkeys

Yoshifumi Matsumoto, Chihiro Hiramatsu, Yuka Matsushita, Norihiro Ozawa, Ryuichi Ashino, Makiko Nakata, Satoshi Kasagi, Anthony Di Fiore, Colleen Schaffner, Filippo Aureli, Amanda D. Melin, Shoji Kawamura & Colleen M. Schaffner
New World monkeys exhibit prominent color vision variation due to allelic polymorphism of the long-to-middle wavelength (L/M) opsin gene. The known spectral variation of L/M opsins in primates is broadly determined by amino acid composition at three sites: 180, 277 and 285 (the “three-sites” rule). However, two L/M opsin alleles found in the black-handed spider monkeys (Ateles geoffroyi) are known exceptions, presumably due to novel mutations. The spectral separation of the two L/M photopigments is...

Registration Year

  • 2014

Resource Types

  • Dataset


  • Washington University in St. Louis
  • Swiss Institute of Bioinformatics
  • The University of Texas at Austin
  • Kyushu University
  • Monash University Malaysia
  • Philipp University of Marburg
  • Universiti Malaysia Terengganu
  • University of Leeds
  • University of Zurich
  • University of Florida