7 Works

Data from: The genomic landscape of rapid repeated evolutionary adaptation to toxic pollution in wild fish

Noah M. Reid, Dina A. Proestou, Bryan W. Clark, Wesley C. Warren, John K. Colbourne, Joseph R. Shaw, Sibel I. Karchner, Mark E. Hahn, Diane Nacci, Marjorie F. Oleksiak, Douglas L. Crawford & Andrew Whitehead
Atlantic killifish populations have rapidly adapted to normally lethal levels of pollution in four urban estuaries. Through analysis of 384 whole killifish genome sequences and comparative transcriptomics in four pairs of sensitive and tolerant populations, we identify the aryl hydrocarbon receptor–based signaling pathway as a shared target of selection. This suggests evolutionary constraint on adaptive solutions to complex toxicant mixtures at each site. However, distinct molecular variants apparently contribute to adaptive pathway modification among tolerant...

Data from: Population genomic analyses reveal a history of range expansion and trait evolution across the native and invaded range of yellow starthistle (Centaurea solstitialis)

Brittany S. Barker, Krikor Andonian, Sarah M. Swope, Doug G. Luster & Katrina M. Dlugosch
Identifying sources of genetic variation and reconstructing invasion routes for non-native introduced species is central to understanding the circumstances under which they may evolve increased invasiveness. In this study, we used genome-wide single nucleotide polymorphisms to study the colonization history of Centaurea solstitialis in its native range in Eurasia and invasions into the Americas. We leveraged this information to pinpoint key evolutionary shifts in plant size, a focal trait associated with invasiveness in this species....

Data from: Mapping resistance to Alternaria cucumerina in Cucumis melo

James Daley, Sandra E. Branham, Amnon Levi, Richard Hassell, William Patrick Wechter, Sandra Branham & Patrick Wechter
Infection with Alternaria cucumerina causes Alternaria leaf blight (ALB), a disease characterized by lesion formation on leaves, leading to substantial yield and quality losses in Cucumis melo (melon). While fungicides are effective against ALB, reduction in the frequency of application would be economically and environmentally beneficial. Resistant melon lines have been identified but the genetic basis of this resistance has not been determined. A saturated melon genetic map was constructed with markers developed through genotyping-by...

Data from: Genome-wide association study in Arabidopsis thaliana of natural variation in seed oil melting point, a widespread adaptive trait in plants

Sandra E. Branham, Sara J. Wright, Aaron Reba, Ginnie D. Morrison & C. Randal Linder
Seed oil melting point is an adaptive, quantitative trait determined by the relative proportions of the fatty acids that compose the oil. Micro- and macro-evolutionary evidence suggests selection has changed the melting point of seed oils to covary with germination temperatures because of a trade-off between total energy stores and the rate of energy acquisition during germination under competition. The seed oil compositions of 391 natural accessions of Arabidopsis thaliana, grown under common-garden conditions, were...

Data from: Evolution of long centromeres in fire ants

Yu-Ching Huang, Chih-Chi Lee, Chia-Yi Kao, Ni-Chen Chang, Chung-Chi Lin, DeWayne Shoemaker & John Wang
Background: Centromeres are essential for accurate chromosome segregation, yet sequence conservation is low even among closely related species. Centromere drive predicts rapid turnover because some centromeric sequences may compete better than others during female meiosis. In addition to sequence composition, longer centromeres may have a transmission advantage. Results: We report the first observations of extremely long centromeres, covering on average 34 % of the chromosomes, in the red imported fire ant Solenopsis invicta. By comparison,...

Data from: Little white lies: pericarp color provides insights into the origins and evolution of Southeast Asian weedy rice

Yongxia Cui, Beng Kah Song, Lin-Feng Li, Ya-Ling Li, Zhongyun Huang, Ana L. Caicedo, Yulin Jia & Kenneth M. Olsen
Weedy rice is a conspecific form of cultivated rice (Oryza sativa L.) that infests rice fields and results in severe crop losses. Weed strains in different world regions appear to have originated multiple times from different domesticated and/or wild rice progenitors. In the case of Malaysian weedy rice, a multiple-origin model has been proposed based on neutral markers and analyses of domestication genes for hull color and seed shattering. Here we examined variation in pericarp...

Data from: High levels of diversity and population structure in the potato late blight pathogen at the Mexico center of origin

Jianan Wang, Sylvia P. Fernândez-Pavía, Meredith M. Larsen, Edith Garay-Serrano, Rosario Gregorio-Cipriano, Gerardo Rodríguez-Alvarado, Niklaus J. Grünwald & Erica M. Goss
Globally destructive crop pathogens often emerge by migrating out of their native ranges. These pathogens are often diverse at their center of origin, and may exhibit adaptive variation in the invaded range via multiple introductions from different source populations. However, source populations are generally unidentified or poorly studied compared to invasive populations. Phytophthora infestans, the causal agent of late blight, is one of the most costly pathogens of potato and tomato worldwide. Mexico is the...

Registration Year

  • 2016

Resource Types

  • Dataset


  • Agricultural Research Service
  • Washington University in St. Louis
  • National Changhua University of Education
  • University of Massachusetts Amherst
  • The University of Texas at Austin
  • Monash University Malaysia
  • Universidad Michoacana de San Nicolás de Hidalgo
  • VA Office of Research and Development
  • Mills College
  • University of Florida