12 Works

Data from: Genetic variation in adaptive traits and seed transfer zones for Pseudoroegneria spicata (bluebunch wheatgrass) in the northwestern United States

John Bradley St. Clair, Francis F. Kilkenny, Richard C. Johnson, Nancy L. Shaw & George Weaver
A genecological approach was used to explore genetic variation in adaptive traits in Pseudoroegneria spicata, a key restoration grass, in the intermountain western United States. Common garden experiments were established at three contrasting sites with seedlings from two maternal parents from each of 114 populations along with five commercial releases commonly used in restoration. Traits associated with size, flowering phenology and leaf width varied considerably among populations and were moderately correlated to the climates of...

Data from: Detecting an elusive invasive species: a diagnostic PCR to detect Burmese python in Florida waters and an assessment of persistence of environmental DNA

Antoinette J. Piaggio, Richard M. Engeman, Matthew W. Hopken, John S. Humphrey, Kandy L. Keacher, William E. Bruce & Michael L. Avery
Recent studies have demonstrated that detection of environmental DNA (eDNA) from aquatic vertebrates in water bodies is possible. The Burmese python, Python bivittatus, is a semi-aquatic, invasive species in Florida where its elusive nature and cryptic coloration make its detection difficult. Our goal was to develop a diagnostic PCR to detect P. bivittatus from water-borne eDNA, which could assist managers in monitoring this invasive species. First, we used captive P. bivittatus to determine whether reptilian...

Data from: Genetic variation and differentiation of extant bison (Bison bison) subspecies and cattle (Bos taurus) breeds and subspecies

Matthew A. Cronin, Michael D. MacNeil, Ninh Vu, Vicki Leesburg, Harvey D. Blackburn & James N. Derr
The genetic relationship of American plains bison (Bison bison bison) and wood bison (B. b. athabascae) was quantified and compared with that among breeds and subspecies of cattle. Plains bison from nine herds (N=136), wood bison from three herds (N=65), taurine cattle (Bos taurus taurus) from fourteen breeds (N=244), and indicine cattle (B. t. indicus) from two breeds (N=53) were genotyped for 29 polymorphic microsatellite loci. Bayesian cluster analyses indicate three groups, two of which...

Data from: Social environment influences the relationship between genotype and gene expression in wild baboons

Daniel E. Runcie, Ralph T. Wiedmann, Elizabeth A. Archie, Jeanne Altmann, Gregory A. Wray, Susan C. Alberts & Jenny Tung
Variation in the social environment can have profound effects on survival and reproduction in wild social mammals. However, we know little about the degree to which these effects are influenced by genetic differences among individuals, and conversely, the degree to which social environmental variation mediates genetic reaction norms. To better understand these relationships, we investigated the potential for dominance rank, social connectedness and group size to modify the effects of genetic variation on gene expression...

Data from: Pest tradeoffs in technology: reduced damage by caterpillars in Bt cotton benefits aphids

Steffen Hagenbucher, Felix L. Wäckers, Felix E. Wettstein, Dawn M. Olson, John R. Ruberson, Jörg Romeis & F. L. Wackers
The rapid adoption of genetically engineered (GE) plants that express insecticidal Cry proteins derived from Bacillus thuringiensis (Bt) has raised concerns about their potential impact on non-target organisms. This includes the possibility that non-target herbivores develop into pests. Although studies have now reported increased populations of non-target herbivores in Bt cotton, the underlying mechanisms are not fully understood. We propose that lack of herbivore-induced secondary metabolites in Bt cotton represents a mechanism that benefits non-target...

Data from: Rust disease of eucalypts, caused by Puccinia psidii, did not originate via host jump from guava in Brazil

Rodrigo N. Graça, Amy L. Ross-Davis, Ned B. Klopfenstein, Mee-Sook Kim, Tobin L. Peever, Philip G. Cannon, Cristina P. Aun, Eduardo S. G. Mizubuti & Acelino C. Alfenas
The rust fungus, Puccinia psidii, is a devastating pathogen of introduced eucalypts (Eucalyptus spp.) in Brazil where it was first observed in 1912. This pathogen is hypothesized to be endemic to South and Central America and to have first infected eucalypts via a host jump from native guava (Psidium guajava). Ten microsatellite markers were used to genotype 148 P. psidii samples from eucalypts and guava plus five additional myrtaceous hosts across a wide geographic range...

Data from: Multilocus analyses reveal little evidence for lineage wide adaptive evolution within major clades of soft pines (Pinus subgenus Strobus)

Andrew J. Eckert, Andrew D. Bower, Kathleen D. Jermstad, Jill L. Wegrzyn, Brian J. Knaus, John V. Syring & David B. Neale
Estimates from molecular data for the fraction of new nonsynonymous mutations that are adaptive vary strongly across plant species. Much of this variation is due to differences in life-history strategies as they influence the effective population size (Ne). Ample variation for these estimates, however, remains even when comparisons are made across species with similar values of Ne. An open question thus remains as to why the large disparity for estimates of adaptive evolution exists among...

Data from: Microsatellite primers for the Pacific Northwest conifer, Callitropsis nootkatensis (Cupressaceae)

Tara N. Jennings, Brian J. Knaus, Katherine Alderman, Paul E. Hennon, David V. D'Amore, Richard Cronn & David V. D' Amore
Premise of the study: Microsatellite primers were developed for Nootka cypress (Callitropsis nootkatensis) to provide quantitative measures for gene conservation that can assist in guiding management decisions for a species experiencing climate-induced decline. Methods and Results: Using multiplexed massively parallel sequencing, we identified 136,785 microsatellite-containing sequences from 489,625 paired-end 80 bp reads. After stringent filtering, we selected 144 primer pairs and screened variation at these loci in five populations of C. nootkatensis. Loci show between...

Data from: Genetic architecture of sexual dimorphism in a subdioecious plant with a proto-sex chromosome

Rachel B. Spigler, Kim S. Lewers & Tia-Lynn Ashman
The rise of sexual dimorphism is thought to coincide with the evolution of sex chromosomes. Yet because sex chromosomes in many species are ancient, we lack empirical evidence of the earliest stages of this transition. We use QTL analysis to examine the genetic architecture of sexual dimorphism in subdioecious octoploid Fragaria virginiana. We demonstrate that the region housing the male-function locus controls the majority of quantitative variation in proportion fruit set, confirming the existence of...

Data from: Not as ubiquitous as we thought: taxonomic crypsis, hidden diversity and cryptic speciation in the cosmopolitan fungus Thelonectria discophora (Nectriaceae, Hypocreales, Ascomycota)

Catalina Salgado-Salazar, Amy Y. Rossman & Priscila Chaverri
The distribution of microbial species, including fungi, has long been considered cosmopolitan. Recently, this perception has been challenged by molecular studies in historical biogeography, phylogeny and population genetics. Here we explore this issue using the fungal morphological species Thelonectria discophora, one of the most common species of fungi in the family Nectriaceae, encountered in almost all geographic regions and considered as a cosmopolitan taxon. In order to determine if T. discophora is a single cosmopolitan...

Data from: Genomics assisted ancestry deconvolution in grape

Jason K. Sawler, Bruce Reisch, Mallikarjuna K. Aradhya, Bernard Prins, Gan-Yuan Zhong, Heidi Schwaninger, Charles Simon, Edward Buckler, Sean Myles & Jason Sawler
The genus Vitis (the grapevine) is a group of highly diverse, diploid woody perennial vines consisting of approximately 60 species from across the northern hemisphere. It is the world’s most valuable horticultural crop with ~8 million hectares planted, most of which is processed into wine. To gain insights into the use of wild Vitis species during the past century of interspecific grape breeding and to provide a foundation for marker-assisted breeding programmes, we present a...

Data from: Niche differentiation and colonization of a novel environment by an asexual parasitic wasp.

Andrew A. Forbes, Laura A. Rice, Nicholas B. Stewart, Wee L. Yee & Maurine Neiman
How do asexual taxa become adapted to a diversity of environments, and how do they persist despite changing environmental conditions? These questions are linked by their mutual focus on the relationship between genetic variation, which is often limited in asexuals, and the ability to respond to environmental variation. Asexual taxa originating from a single ancestor present a unique opportunity to assess rates of phenotypic and genetic change when access to new genetic variation is limited...

Registration Year

  • 2013
    12

Resource Types

  • Dataset
    12

Affiliations

  • United States Department of Agriculture
    12
  • University of California, Davis
    2
  • Kookmin University
    1
  • Princeton University
    1
  • Duke University
    1
  • University of Georgia
    1
  • Oregon State University
    1
  • University of Pittsburgh
    1
  • Dalhousie University
    1
  • Texas A&M University
    1