In: Molecular Ecology, 2010, vol. 19, no. 18, p. 3981–3994
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In: Plants Biosystems, 2010, vol. 144, no. 3, p. 656-668
White poplar (Populus alba) is a widespread species of the northern hemisphere. Introgressed populations or hybrid zones with the related species of the European aspen (Populus tremula) have been suggested as potential venues for the identification of functionally important variation for germplasm conservation, restoration efforts and tree breeding. Data on the genetic diversity and structure of...
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In: Sexual Plant Reproduction, 2010, vol. 23, no. 3, p. 173-186
Two related flower-expressed gene copies belonging to the SF21 (sunflower-21) gene family have been isolated from Senecio squalidus (Oxford Ragwort, Asteraceae). These gene copies are differentially expressed in pollen and pistil tissues; ORSF21B (Oxford Ragwort SF21B) is expressed exclusively in mature pollen, whereas ORSF21A (Oxford Ragwort...
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In: Genetics, 2010, vol. 186, p. 699–712
Admixture between genetically divergent populations facilitates genomic studies of the mechanisms involved in adaptation, reproductive isolation and speciation, including mapping of the loci involved in these phenomena. Little is known about how pre- and postzygotic barriers will affect the prospects of 'admixture mapping' in wild species. We have studied 93 mapped genetic markers...
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In: Plant Physiology, 2010, p. -
Fertilization in angiosperms depends on a complex cellular "courtship" between haploid pollen and diploid pistil. These pollen-pistil interactions are regulated by a diversity of molecules, many of which remain to be identified and characterized. Thus it is unclear to what extent these processes are conserved among angiosperms, a fact confounded by limited sampling across taxa. Here we report...
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In: Tree Genetics & Genomes, 2010, vol. 6, no. 3, p. 439-450
The central aim of this paper is to clarify the picture of postglacial recolonisation and the reconstruction of refugia of Populus alba (L.) and Populus tremula (L.) in the light of hybridisation of the two species. We focussed our study on Central and Southeastern Europe including reference samples from Spain, Sweden and Northern Africa.We investigated 414 individuals of 26 populations using...
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In: Molecular Ecology, 2010, vol. 19, no. 8, p. 1638-1650
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In: Heredity, 2009, vol. 103, p. 503–512
The processes that have shaped the extraordinary species diversity in neotropical rainforests are poorly understood, and knowledge about the patterns of genetic diversity across species' ranges is scarce, in contrast to other regions of the globe. We have conducted a range-wide study of genetic diversity in a plant endemic to the Brazilian Atlantic Rainforest, Vriesea gigantea (Bromeliaceae),...
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In: Molecular Ecology, 2009, vol. 18, no. 7, p. 3629 - 3638
The two species of the palm genus Howea (Arecaceae) from Lord Howe Island, a minute volcanic island in the Tasman Sea, are now regarded as one of the most compelling examples of sympatric speciation, although this view is still disputed by some authors. Population genetic and ecological data are necessary to provide a more coherent and comprehensive understanding of this emerging model system....
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In: Trends in Ecology & Evolution, 2008, vol. 23, no. 12, p. 686-694
Genetic mapping in natural populations is increasing rapidly in feasibility and accessibility. As with many areas in genetics, advances in molecular techniques and statistics are drastically altering how we can investigate inheritance in wild organisms. For ecology and evolution, this is particularly significant and promising, because many of the organisms of interest are not amenable to...
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