Search Constraints
Search Results
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2023
Journal article
Genetic assimilation of ancestral plasticity during parallel adaptation to zinc contamination in Silene uniflora.
Phenotypic plasticity in ancestral populations is hypothesized to facilitate adaptation, but evidence is piecemeal and often contradictory. Further, whether ancestral plasticity increases the probability of parallel adaptive changes has not been explored. The most general finding is that ancestral responses to a new environment are reversed following adaptation (known as... -
2021
Journal article
Unraveling Genetic Diversity Amongst European Hazelnut (Corylus avellana L.) Varieties in Turkey..
European hazelnut ( ) is a diploid (2n = 22), monecious and wind-pollinated species, extensively cultivated for its nuts. Turkey is the world-leading producer of hazelnut, supplying 70–80% of the world’s export capacity. Hazelnut is mostly grown in the Black Sea Region, and maintained largely through clonal propagation. Understanding the...Oztolan-Erol, Nihal ; Helmstetter, Andrew J. ; İnan, Asuman ; Buggs, Richard J. A. ; Lucas, Stuart J.
SNP identification, Corylus avellana, RAD-seq, Private alleles, Hazelnut, and Genetic diversity
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2021
Journal article
Rapid Parallel Adaptation to Anthropogenic Heavy Metal Pollution.
The impact of human-mediated environmental change on the evolutionary trajectories of wild organisms is poorly understood. In particular, capacity of species to adapt rapidly (in hundreds of generations or less), reproducibly and predictably to extreme environmental change is unclear. Silene uniflora is predominantly a coastal species, but it has also...Papadopulos, Alexander S.T. ; Helmstetter, Andrew J. ; Osborne, Owen G. ; Comeault, Aaron A. ; Wood, Daniel P. …
Parallel evolution, Rapid evolution, and Heavy metal tolerance
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2020
Journal article
Introgression across evolutionary scales suggests reticulation contributes to Amazonian tree diversity
Hybridisation has the potential to generate or homogenize biodiversity and is a particularly common phenomenon in plants, with an estimated 25% of plant species undergoing inter‐specific gene flow. However, hybridisation in Amazonia’s megadiverse tree flora was assumed to be extremely rare despite extensive sympatry between closely related species, and its... -
2020
Journal article
Unraveling the Phylogenomic Relationships of the Most Diverse African Palm Genus Raphia (Calamoideae, Arecaceae)
Palms are conspicuous floristic elements across the tropics. In continental Africa, even though there are less than 70 documented species, they are omnipresent across the tropical landscape. The genus Raphia has 20 accepted species in Africa and one species endemic to the Neotropics. It is the most economically important genus...Helmstetter, Andrew J. ; Kamga, Suzanne Mogue ; Bethune, Kevin ; Lautenschläger, Thea ; Zizka, Alexander …
Rain forests, Africa, Madagascar, Sequence capture, Exons, Phylogenomics, and Raphia
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2019
Journal article
Repeated long-distance dispersal and convergent evolution in hazel
Closely related species with a worldwide distribution provide an opportunity to understand evolutionary and biogeographic processes at a global scale. Hazel (Corylus) is an economically important genus of tree and shrub species found in temperate regions of Asia, North America and Europe. Here we use multiple nuclear and chloroplast loci...Helmstetter, Andrew J. ; Buggs, Richard J. A. ; Lucas, Stuart J.