8 Works

Data from: Geographic variation of the major histocompatibility complex in Eastern Atlantic grey seals (Halichoerus grypus)

Kristina Cammen, Joe I Hoffman, Leslie A Knapp, John Harwood & William Amos
Pathogen-driven balancing selection maintains high genetic diversity in many vertebrates, particularly in the major histocompatibility complex (MHC) immune system gene family, which is often associated with disease susceptibility. In large natural populations where subpopulations face different pathogen pressures, the MHC should show greater genetic differentiation within a species than neutral markers. We examined genetic diversity at the MHC-DQB locus and nine putatively neutral microsatellite markers in grey seals (Halichoerus grypus) from eight United Kingdom colonies,...

Data from: Nonadditive changes to cytosine methylation as a consequence of hybridization and genome duplication in Senecio (Asteraceae)

Matthew J Hegarty, Tom Batstone, Gary L Barker, Keith J Edwards, Richard J Abbott & Simon J Hiscock
The merger of two or more divergent genomes within an allopolyploid nucleus can facilitate speciation and adaptive evolution in flowering plants. Widespread changes to gene expression have been shown to result from interspecific hybridisation and polyploidy in a number of plant species, and attention has now shifted to determining the epigenetic processes which drive these changes. We present here an analysis of cytosine methylation patterns in triploid F1 Senecio (ragwort) hybrids and their allohexaploid derivatives....

Data from: History and evolution of alpine plants endemic to the Qinghai-Tibetan Plateau: Aconitum gymnandrum (Ranunculaceae)

Liuyang Wang, Richard Abbott, Wei Zheng, Ping Chen, Yujin Wang & Jianquan Liu
How Quaternary climatic oscillations affected range distributions and intraspecific divergence of alpine plants on the Qinghai-Tibetan Plateau (QTP) remains largely unknown. Here we report a survey of chloroplast (cp) and nuclear ribosomal (ITS) DNA variation aimed at exploring the phylogeographic history of the QTP alpine endemic Aconitum gymnandrum. We sequenced three cpDNA fragments (rpl20-rps12 intergenic spacer, the trnV intron and psbA-trnH spacer) and also the nuclear (ITS) region in 245 individuals from 23 populations sampled...

Data from: Genetics of incipient speciation in Drosophila mojavensis. III. Life history divergence in allopatry and reproductive isolation

William J. Etges, Cássia Cardoso De Oliveira, Mohamed A. F. Noor & Michael G. Ritchie
We carried out a three-tiered genetic analysis of egg-to-adult development time and viability in ancestral and derived populations of cactophilic D. mojavensis to test the hypothesis that evolution of these life history characters has shaped premating reproductive isolation in this species. First, a common garden experiment with 11 populations from Baja California and mainland Mexico and Arizona reared on two host cacti revealed significant host plant X region and population interactions for viability and development...

Data from: Geographic variation of the major histocompatibility complex in Eastern Atlantic grey seals (Halichoerus grypus)

Kristina Cammen, Joe I Hoffman, Leslie A Knapp, John Harwood & William Amos
Pathogen-driven balancing selection maintains high genetic diversity in many vertebrates, particularly in the major histocompatibility complex (MHC) immune system gene family, which is often associated with disease susceptibility. In large natural populations where subpopulations face different pathogen pressures, the MHC should show greater genetic differentiation within a species than neutral markers. We examined genetic diversity at the MHC-DQB locus and nine putatively neutral microsatellite markers in grey seals (Halichoerus grypus) from eight United Kingdom colonies,...

Data from: Nonadditive changes to cytosine methylation as a consequence of hybridization and genome duplication in Senecio (Asteraceae)

Matthew J Hegarty, Tom Batstone, Gary L Barker, Keith J Edwards, Richard J Abbott & Simon J Hiscock
The merger of two or more divergent genomes within an allopolyploid nucleus can facilitate speciation and adaptive evolution in flowering plants. Widespread changes to gene expression have been shown to result from interspecific hybridisation and polyploidy in a number of plant species, and attention has now shifted to determining the epigenetic processes which drive these changes. We present here an analysis of cytosine methylation patterns in triploid F1 Senecio (ragwort) hybrids and their allohexaploid derivatives....

Data from: Genetics of incipient speciation in Drosophila mojavensis. III. Life history divergence in allopatry and reproductive isolation

William J. Etges, Cássia Cardoso De Oliveira, Mohamed A. F. Noor & Michael G. Ritchie
We carried out a three-tiered genetic analysis of egg-to-adult development time and viability in ancestral and derived populations of cactophilic D. mojavensis to test the hypothesis that evolution of these life history characters has shaped premating reproductive isolation in this species. First, a common garden experiment with 11 populations from Baja California and mainland Mexico and Arizona reared on two host cacti revealed significant host plant X region and population interactions for viability and development...

Data from: History and evolution of alpine plants endemic to the Qinghai-Tibetan Plateau: Aconitum gymnandrum (Ranunculaceae)

Liuyang Wang, Richard Abbott, Wei Zheng, Ping Chen, Yujin Wang & Jianquan Liu
How Quaternary climatic oscillations affected range distributions and intraspecific divergence of alpine plants on the Qinghai-Tibetan Plateau (QTP) remains largely unknown. Here we report a survey of chloroplast (cp) and nuclear ribosomal (ITS) DNA variation aimed at exploring the phylogeographic history of the QTP alpine endemic Aconitum gymnandrum. We sequenced three cpDNA fragments (rpl20-rps12 intergenic spacer, the trnV intron and psbA-trnH spacer) and also the nuclear (ITS) region in 245 individuals from 23 populations sampled...

Registration Year

  • 2010
    8

Resource Types

  • Dataset
    8

Affiliations

  • University of St Andrews
    8
  • Duke University
    2
  • University of Cambridge
    2
  • Lanzhou University
    2
  • Chinese Academy of Sciences
    2
  • Institute of Biological, Environmental and Rural Sciences
    2
  • University of Bristol
    2
  • University of Arkansas System
    2