Research Topics
| Par K IngvarssonSummaryCountry: Sweden Publications
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Publications
Molecular population genetics of herbivore-induced protease inhibitor genes in European aspen (Populus tremula L., Salicaceae)Par K Ingvarsson
Umea Plant Science Centre, Department of Ecology and Environmental Science, University of Umea, SE 891 87 Umeå, Sweden
Mol Biol Evol 22:1802-12. 2005..tremula. Patterns of sequence diversity at TI1 do not fit a simple model of either balancing selection or recurrent selective sweeps. This suggests that selection at TI1 is more complex, possibly involving allelic cycling...
Nucleotide polymorphism and linkage disequilibrium within and among natural populations of European aspen (Populus tremula L., Salicaceae)Par K Ingvarsson
Umea Plant Science Centre, Department of Ecology and Environmental Science, University of Umea, SE 891 87 Umeå, Sweden
Genetics 169:945-53. 2005..The high levels of nucleotide polymorphism and low linkage disequilibrium suggest that it may be possible to map functional variation to very fine scales in P. tremula using association-mapping approaches...
Population subdivision and the Hudson-Kreitman-Aguade test: testing for deviations from the neutral model in organelle genomesPar K Ingvarsson
Umea Plant Science Centre, Department of Ecology and Environmental Science, University of Umea, Sweden
Genet Res 83:31-9. 2004....
Molecular evolution of insertions and deletion in the chloroplast genome of silenePar K Ingvarsson
Department of Biology, University of Virginia, USA
Mol Biol Evol 20:1737-40. 2003..We show that coded indel data have high information content for phylogenetic analysis, and indels thus provide useful information to infer phylogenetic relationships at the intraspecific level...
A metapopulation perspective on genetic diversity and differentiation in partially self-fertilizing plantsPar K Ingvarsson
Department of Ecology and Environmental Science, University of Umea, SE 901 87 Umea, Sweden
Evolution 56:2368-73. 2002..The reason for this depends on an interaction between selfing and pollen migration...
Genealogical evidence for epidemics of selfish genesPar K Ingvarsson
Department of Biology, Gilmer Hall, University of Virginia, PO Box 400328, Charlottesville, VA 22904 4328, USA
Proc Natl Acad Sci U S A 99:11265-9. 2002....
Heterosis increases the effective migration rateP K Ingvarsson
Department of Zoology, University of British Columbia, Vancouver, Canada
Proc Biol Sci 267:1321-6. 2000..Furthermore the heterosis effect will be highly variable throughout the genome, with the largest effect seen near selected genes and in regions of high gene density...
Differential migration from high fitness demes in the shining fungus beetle, Phalacrus substriatusP K Ingvarsson
Department of Ecology and Environmental Science, Umea University, Sweden
Evolution 54:297-301. 2000....
Molecular evolution of synonymous codon usage in PopulusPar K Ingvarsson
Umea Plant Science Centre, Department of Ecology and Environmental Science, Umea University, SE90187 Umeå, Sweden
BMC Evol Biol 8:307. 2008..However, natural selection on codon usage is considered to be a weak evolutionary force and selection on codon usage is expected to be strongest in species with large effective population sizes...
Nucleotide polymorphism and phenotypic associations within and around the phytochrome B2 Locus in European aspen (Populus tremula, Salicaceae)Par K Ingvarsson
Department of Ecology and Environmental Science, Umea Plant Science Centre, Umea University, SE 901 87 Umea, Sweden
Genetics 178:2217-26. 2008..The lack of population structure, combined with low levels of linkage disequilibrium, suggests that association mapping is a fruitful method for dissecting naturally occurring variation in Populus tremula...
Multilocus patterns of nucleotide polymorphism and the demographic history of Populus tremulaPar K Ingvarsson
Umea Plant Science Centre, Department of Ecology and Environmental Science, Umea University, SE 901 87 Umea, Sweden
Genetics 180:329-40. 2008..tremula are likely to be 2-10 times higher than the mutation rate. This study reinforces the notion that linkage disequilibrium is low and decays to negligible levels within a few hundred base pairs in P. tremula...
Variation in mutation rate and polymorphism among mitochondrial genes of Silene vulgarisCamille M Barr
Department of Biology, University of Virginia, VA, USA
Mol Biol Evol 24:1783-91. 2007....
Genetic differentiation, clinal variation and phenotypic associations with growth cessation across the Populus tremula photoperiodic pathwayXiao fei Ma
Department of Ecology and Environmental Science, Umea Plant Science Centre, Umea University, SE 90187 Umea, Sweden
Genetics 186:1033-44. 2010..Collectively these SNPs explain 10-15% of the phenotypic variation in growth cessation. Covariances in allelic effects across populations help explain an additional 5-7% of the phenotypic variation in growth cessation...
Genetic variation in functional traits influences arthropod community composition in aspen (Populus tremula L.)Kathryn M Robinson
Umea Plant Science Centre, Department of Plant Physiology, Umea University, Umea, Sweden
PLoS ONE 7:e37679. 2012..It further suggests that aspen can be a resource for the study of mechanisms of natural resistance to herbivores...
Clinal variation in phyB2, a candidate gene for day-length-induced growth cessation and bud set, across a latitudinal gradient in European aspen (Populus tremula)Par K Ingvarsson
Department of Ecology and Environmental Science, Umea Plant Science Centre, University of Umea, SE 891 87 Umeå, Sweden
Genetics 172:1845-53. 2006....
Natural selection on synonymous and nonsynonymous mutations shapes patterns of polymorphism in Populus tremulaPar K Ingvarsson
Umea Plant Science Centre, Department of Ecology and Environmental Science, Umea University, Umea, Sweden
Mol Biol Evol 27:650-60. 2010..54x10( - 7), which is in line with estimates from Drosophila where recurrent hitchhiking has also been shown to have significant effects on standing levels of polymorphism...
Geographical structure and adaptive population differentiation in herbivore defence genes in European aspen (Populus tremula L., Salicaceae)Carolina Bernhardsson
Department of Ecology and Environmental Science, Umea Plant Science Centre, SE 901 87 Umea, Sweden
Mol Ecol 21:2197-207. 2012..tremula, but this is, to our knowledge, one of the first times that geographical variation has been found in genes involved in plant defence against antagonists...
Adaptive evolution of the Populus tremula photoperiod pathwayDavid Hall
Umea Plant Science Centre, Department of Ecology and Environmental Science, Umea University, Umea, Sweden
Mol Ecol 20:1463-74. 2011....
Using association mapping to dissect the genetic basis of complex traits in plantsDavid Hall
Department of Ecology and Environmental Science, Umea Plant Science Centre, Umea University, Sweden
Brief Funct Genomics 9:157-65. 2010..With these caveats in mind, association mapping nevertheless shows great promise for helping us understand the genetic basis of complex traits of both economic and ecological importance...
Adaptive population differentiation in phenology across a latitudinal gradient in European aspen (Populus tremula, L.): a comparison of neutral markers, candidate genes and phenotypic traitsDavid Hall
Department of Ecology and Environmental Science, Umea Plant Science Centre, Umea University, SE 901 87 Umea, Sweden
Evolution 61:2849-60. 2007..This result fit theoretical expectations that suggest that genetic differentiation at candidate loci is better described by F(ST) at neutral loci rather than by Q(ST) at the quantitative traits themselves...
Molecular population genetics of elicitor-induced resistance genes in European aspen (Populus tremula L., Salicaceae)Carolina Bernhardsson
Umea Plant Science Centre, Department of Ecology and Environmental Science, Umea, Sweden
PLoS ONE 6:e24867. 2011....
Molecular diversification in the quorum-sensing system of Vibrio cholerae: Role of natural selection in the emergence of pandemic strainsNina M Talyzina
Department of Ecology and Environmental Science, Umea University, Sweden
Appl Environ Microbiol 75:3808-12. 2009..cholerae strains. The hapR2 has evolved under strong natural selection, implying that its fixation was influenced by conditions that led to cholera pandemics...
Common features of segregation distortion in plants and animalsDouglas R Taylor
Department of Biology, Box 400328, University of Virginia, Charlottesville, VA 22904 4328, USA
Genetica 117:27-35. 2003..Non-Mendelian genes may therefore have greater evolutionary importance than their current abundance in nature would suggest...
Gene flow and selection on phenotypic plasticity in an island system of Rana temporariaMartin I Lind
Department of Ecology and Environmental Science, Umea University, 901 87 Umea, Sweden
Evolution 65:684-97. 2011..The local adaptation in development time and phenotypic plasticity is quite remarkable, because the populations are young (less than 300 generations) and substantial gene flow is present among islands...
Local drift load and the heterosis of interconnected populationsM C Whitlock
Department of Zoology, University of British Columbia, Vancouver, BC, Canada V6T 1Z4
Heredity (Edinb) 84:452-7. 2000..Moreover, we show that heterosis in crosses between populations has a different genetic basis than inbreeding depression within populations and is much more likely to result from alleles of intermediate effect...
Association genetics of complex traits in plantsPar K Ingvarsson
Department of Ecology and Environmental Science, Umea Plant Science Centre, Umea University, SE 90187 Umea, Sweden
New Phytol 189:909-22. 2011....
Gene expression and protein length influence codon usage and rates of sequence evolution in Populus tremulaPar K Ingvarsson
Umea Plant Science Centre, Department of Ecology and Environmental Science, Umea University, Umea, Sweden
Mol Biol Evol 24:836-44. 2007..In addition to the effects of gene expression, protein length appear to be an important factor influencing virtually all aspects of molecular evolution in P. tremula...
Natural selection on floral traits of female Silene dioica by a sexually transmitted diseaseBarbara E Giles
Department of Ecology and Environmental Science, Umea University, S 901 87 Umea, Sweden
New Phytol 169:729-39. 2006....
Comparative nucleotide diversity across North American and European populus speciesMohamed Ismail
Department of Forest Sciences, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
J Mol Evol 74:257-72. 2012..tremula (≫400 bp). The similarities in nucleotide diversity pattern and LD decay of the two balsam poplar species likely reflects the recent time of their divergence...
