Ecological speciation in sympatric palms: 3. Genetic map reveals genomic islands underlying species divergence in
            <i>Howea</i>

Papadopulos, Alexander S. T.; Igea, Javier; Dunning, Luke T.; Osborne, Owen G.; Quan, Xiangqian; Pellicer, Jaume; Turnbull, Colin; Hutton, I.; Baker, William J.; Butlin, Roger K.; Savolainen, Vincent

doi:10.1111/evo.13796

Cited by 18 publications

(18 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This generated an average of 6,186,469 reads per sample. Genotyping of ddRAD data was performed using the STACKS pipeline, building upon the catalogue generated in Papadopulos et al (2019). To expand the catalogue to encompass haplotypes present in both Howea species, samples were assembled into loci using USTACKS (-m20, -M3) and these stacks were merged into the existing catalogue allowing three mismatches between loci in different individuals.…”

Section: Rad-sequencingmentioning

confidence: 99%

Ecological speciation in sympatric palms: 4. Demographic analyses support speciation of Howea in the face of high gene flow

et al. 2019

Self Cite

View full text Add to dashboard Cite

The idea that populations must be geographically isolated (allopatric) to evolve into separate species has persisted for a long time. It is now clear that new species can also diverge despite ongoing genetic exchange, but few accepted cases of speciation in sympatry have held up when scrutinized using modern approaches. Here, we examined evidence for speciation of the Howea palms of Lord Howe Island, Australia, in light of new genomic data. We used coalescence‐based demographic models combined with double digest restriction site associated DNA sequencing of multiple individuals and provide support for previous claims by Savolainen et al. that speciation in Howea did occur in the face of gene flow.

show abstract

Section: Rad-sequencingmentioning

confidence: 99%

Ecological speciation in sympatric palms: 4. Demographic analyses support speciation of Howea in the face of high gene flow

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Calculating d xy across the genome and locating F ST peaks that are associated with elevated d xy can help narrow down the potential causes of some islands of divergence (e.g. [18,[31][32][33][34]).…”

Section: Introductionmentioning

confidence: 99%

Genomic differentiation across the speciation continuum in three hummingbird species pairs

Henderson

Brelsford

2020

BMC Evol Biol

View full text Add to dashboard Cite

Background: The study of speciation has expanded with the increasing availability and affordability of highresolution genomic data. How the genome evolves throughout the process of divergence and which regions of the genome are responsible for causing and maintaining that divergence have been central questions in recent work. Here, we use three pairs of species from the recently diverged bee hummingbird clade to investigate differences in the genome at different stages of speciation, using divergence times as a proxy for the speciation continuum. Results: Population measures of relative differentiation between hybridizing species reveal that different chromosome types diverge at different stages of speciation. Using F ST as our relative measure of differentiation we found that the sex chromosome shows signs of divergence early in speciation. Next, small autosomes (microchromosomes) accumulate highly diverged genomic regions, while the large autosomes (macrochromosomes) accumulate genomic regions of divergence at a later stage of speciation. Conclusions: Our finding that genomic windows of elevated F ST accumulate on small autosomes earlier in speciation than on larger autosomes is counter to the prediction that F ST increases with size of chromosome (i.e. with decreased recombination rate), and is not represented when weighted average F ST per chromosome is compared with chromosome size. The results of this study suggest that multiple chromosome characteristics such as recombination rate and gene density combine to influence the genomic locations of signatures of divergence.

show abstract

“…The searched research field was plant science, and the selected 10 journals of evolution and ecology: Annual Review of Ecology Evolution and Systematics, Biology Letters, BMC Evolutionary Biology, Evolution, Evolutionary Applications, Evolutionary Biology, Evolutionary Ecology, Proceedings of the Royal Society B-Biological Sciences, Systematic Botany, and Trends in Ecology & Evolution the growing season. This increases the chances of contacts among plants, and thus sympatric speciation emerges as the dominant speciation type [50]. Significant results of climate warming are the advance of budding and the delay in leaf shedding, both of which prolong the growing season [51].…”

Section: Mechanisms Underlying Plant Speciationmentioning

confidence: 99%

“…Autotetraploid corn was developed using this method prior to the discovery and extensive use of colchicine; (ii) Climate warming leads to the extension of the growing season. This increases the chances of contacts among plants, and thus sympatric speciation emerges as the dominant speciation type [ 50 ]. Significant results of climate warming are the advance of budding and the delay in leaf shedding, both of which prolong the growing season [ 51 ].…”

Section: Introductionmentioning

confidence: 99%

Plant extinction excels plant speciation in the Anthropocene

et al. 2020

View full text Add to dashboard Cite

Background In the past several millenniums, we have domesticated several crop species that are crucial for human civilization, which is a symbol of significant human influence on plant evolution. A pressing question to address is if plant diversity will increase or decrease in this warming world since contradictory pieces of evidence exit of accelerating plant speciation and plant extinction in the Anthropocene. Results Comparison may be made of the Anthropocene with the past geological times characterised by a warming climate, e.g., the Palaeocene-Eocene Thermal Maximum (PETM) 55.8 million years ago (Mya)—a period of “crocodiles in the Arctic”, during which plants saw accelerated speciation through autopolyploid speciation. Three accelerators of plant speciation were reasonably identified in the Anthropocene, including cities, polar regions and botanical gardens where new plant species might be accelerating formed through autopolyploid speciation and hybridization. Conclusions However, this kind of positive effect of climate warming on new plant species formation would be thoroughly offset by direct and indirect intensive human exploitation and human disturbances that cause habitat loss, deforestation, land use change, climate change, and pollution, thus leading to higher extinction risk than speciation in the Anthropocene. At last, four research directions are proposed to deepen our understanding of how plant traits affect speciation and extinction, why we need to make good use of polar regions to study the mechanisms of dispersion and invasion, how to maximize the conservation of plant genetics, species, and diverse landscapes and ecosystems and a holistic perspective on plant speciation and extinction is needed to integrate spatiotemporally.

show abstract

Ecological speciation in sympatric palms: 3. Genetic map reveals genomic islands underlying species divergence in Howea

Cited by 18 publications

References 54 publications

Ecological speciation in sympatric palms: 4. Demographic analyses support speciation of Howea in the face of high gene flow

Ecological speciation in sympatric palms: 4. Demographic analyses support speciation of Howea in the face of high gene flow

Genomic differentiation across the speciation continuum in three hummingbird species pairs

Plant extinction excels plant speciation in the Anthropocene

Contact Info

Product

Resources

About