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  1. No Access

    Article

    Genetic analysis of admixture and patterns of introgression in foundation cottonwood trees (Salicaceae) in southwestern Colorado, USA

    Cottonwoods are well known as foundation riparian trees that support diverse communities and drive ecosystem processes. Although hybridization naturally occurs when the distributions of two or more cottonwood ...

    Erika I. Hersch-Green, Gerard J. Allan, Thomas G. Whitham in Tree Genetics & Genomes (2014)

  2. No Access

    Article

    Herbivore host-associated genetic differentiation depends on the scale of plant genetic variation examined

    Herbivore adaptation to plant genetic variation can lead to reproductive isolation and the formation of host-associated lineages (host-associated differentiation, or HAD). Plant genetic variation exists along ...

    Luke M. Evans, Gerard J. Allan, Nashelly Meneses, Tamara L. Max… in Evolutionary Ecology (2013)

  3. No Access

    Article

    Populus hybrid hosts drive divergence in the herbivorous mite, Aceria parapopuli: implications for conservation of plant hybrid zones as essential habitat

    Plant hybrid zones receive little conservation attention, yet they may be centers of diversity and evolutionary opportunity for dependent species. In previous studies, cottonwood hybrid zones have been shown t...

    Luke M. Evans, Gerard J. Allan, Thomas G. Whitham in Conservation Genetics (2012)

  4. Article

    Open Access

    Single nucleotide polymorphisms for assessing genetic diversity in castor bean (Ricinus communis)

    Castor bean (Ricinus communis) is an agricultural crop and garden ornamental that is widely cultivated and has been introduced worldwide. Understanding population structure and the distribution of castor bean cul...

    Jeffrey T Foster, Gerard J Allan, Agnes P Chan, Pablo D Rabinowicz… in BMC Plant Biology (2010)

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  5. Article

    Open Access

    Phylogeographic reconstruction of a bacterial species with high levels of lateral gene transfer

    Phylogeographic reconstruction of some bacterial populations is hindered by low diversity coupled with high levels of lateral gene transfer. A comparison of recombination levels and diversity at seven housekee...

    Talima Pearson, Philip Giffard, Stephen Beckstrom-Sternberg… in BMC Biology (2009)

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  6. No Access

    Article

    Distribution of parental DNA markers inEncelia virginensis (Asteraceae: Heliantheae), a diploid species of putative hybrid origin

    Morphological, geographical and ecological evidence suggests thatEncelia virginensis is a true-breeding diploid species derived from hybrids ofE. actoni andE. frutescens. To test this hypothesis, we examined the ...

    Gerard J. Allan, Curtis Clark, Loren H. Rieseberg in Plant Systematics and Evolution (1997)