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Article
Open AccessEvolution of a ZW sex chromosome system in willows
Transitions in the heterogamety of sex chromosomes (e.g., XY to ZW or vice versa) fundamentally alter the genetic basis of sex determination, however the details of these changes have been studied in only a fe...
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Article
Open AccessRepeated turnovers keep sex chromosomes young in willows
Salicaceae species have diverse sex determination systems and frequent sex chromosome turnovers. However, compared with poplars, the diversity of sex determination in willows is poorly understood, and little i...
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Article
Sex determination through X–Y heterogamety in Salix nigra
The development of non-recombining sex chromosomes has radical effects on the evolution of discrete sexes and sexual dimorphism. Although dioecy is rare in plants, sex chromosomes have evolved repeatedly throu...
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Article
Open AccessAccurate determination of genotypic variance of cell wall characteristics of a Populus trichocarpa pedigree using high-throughput pyrolysis-molecular beam mass spectrometry
Pyrolysis-molecular beam mass spectrometry (py-MBMS) analysis of a pedigree of Populus trichocarpa was performed to study the phenotypic plasticity and heritability of lignin content and lignin monomer compositio...
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Article
Open AccessA willow sex chromosome reveals convergent evolution of complex palindromic repeats
Sex chromosomes have arisen independently in a wide variety of species, yet they share common characteristics, including the presence of suppressed recombination surrounding sex determination loci. Mammalian s...
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Article
Genetic diversity and population structure of native, naturalized, and cultivated Salix purpurea
Salix purpurea is a woody perennial that is bred as a high-yielding bioenergy crop in North America. To gain an understanding of the genotypic variation associated with phenotypic diversity, this study characteri...
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Article
Characterization of a large sex determination region in Salix purpurea L. (Salicaceae)
Dioecy has evolved numerous times in plants, but heteromorphic sex chromosomes are apparently rare. Sex determination has been studied in multiple Salix and Populus (Salicaceae) species, and P. trichocarpa has an...
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Article
Open AccessAgronomic performance of Populus deltoides trees engineered for biofuel production
One of the major barriers to the development of lignocellulosic feedstocks is the recalcitrance of plant cell walls to deconstruction and saccharification. Recalcitrance can be reduced by targeting genes invol...
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Article
Open AccessHigh-resolution genetic map** of allelic variants associated with cell wall chemistry in Populus
QTL cloning for the discovery of genes underlying polygenic traits has historically been cumbersome in long-lived perennial plants like Populus. Linkage disequilibrium-based association map** has been proposed ...
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Article
Population genomics of Populus trichocarpa identifies signatures of selection and adaptive trait associations
Stephen DiFazio and colleagues report the genome sequences and population genomic analyses of 544 black cottonwood trees (Populus trichocarpa) along the Northwest coast of North America. They find evidence for cl...
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Article
Erratum: Genomic insights into salt adaptation in a desert poplar
Nature Communications 4: Article number: 2797 (2013); Published: 21 November 2013; Updated: 17 March 2014. The original version of this Article contained an error in the order in which the first and last name ...
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Article
Genomic insights into salt adaptation in a desert poplar
Despite the high economic and ecological importance of forests, our knowledge of the genomic evolution of trees under salt stress remains very limited. Here we report the genome sequence of the desert poplar, Pop...
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Article
Open AccessPredicting whole genome protein interaction networks from primary sequence data in model and non-model organisms using ENTS
The large-scale identification of physical protein-protein interactions (PPIs) is an important step toward understanding how biological networks evolve and generate emergent phenotypes. However, experimental i...
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The Populus Genome and Comparative Genomics
Populus was the first tree genome, and one of the first plant genomes, to be sequenced. The sequencing project and subsequent annotation was a collaborative, international effort, with th...
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Article
Open AccessGenome-wide analysis of Aux/IAA and ARF gene families in Populus trichocarpa
Auxin/Indole-3-Acetic Acid (Aux/IAA) and Auxin Response Factor (ARF) transcription factors are key regulators of auxin responses in plants. We identified the suites of genes in the two gene families in Populus an...
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Article
Genetic containment of forest plantations
Dispersal of pollen, seeds, or vegetative propagules from intensively bred, exotic, or recombinant DNA modified forest plantations may cause detrimental or beneficial ecological impacts on wild or managed ecos...
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Article
The Populus homeobox gene ARBORKNOX1 reveals overlap** mechanisms regulating the shoot apical meristem and the vascular cambium
Secondary growth is supported by a dividing population of meristematic cells within the vascular cambium whose daughter cells are recruited to differentiate within secondary phloem and xylem tissues. We cloned a
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Article
A framework for community and ecosystem genetics: from genes to ecosystems
The fact that genetic traits in one species can affect an entire ecosystem has important basic and applied implications that are only now being appreciated. Th...
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Article
Hybrids abounding
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Article
Structure and expression of duplicate AGAMOUS orthologues in poplar
To investigate the homeotic systems underlying floral development in a dioecious tree, and to provide tools for the manipulation of floral development, we have isolated two Populus trichocarpa genes, PTAG1 and PT...
