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Stephen I Wright

@stepheniwright.bsky.social

Plant evolutionary genomics

7 Posts1086 Follower78 Folgt
Gina Baucom@gbaucom.bsky.social · 8mo ago

A final new paper out from the lab, work from Steve Johnson, @joannarifkin.bsky.social & @stepheniwright.bsky.social We asked what maintains the striking variation in floral color, size, and shape within and among populations of Dame's Rocket, Hesperis matronalis

Color, size, shape: The drivers of floral variation in Hesperis matronalis (Dame’s Rocket)

Evolutionary biologists have long been intrigued by the factors that sustain genetic and phenotypic variation within and among natural populations. Polymorphisms underlying components of floral displa...

biorxiv.org

Stephen I Wright@stepheniwright.bsky.social · 8mo ago

New work now out led by Mark Hibbins and Cassandre Pyne : new statistical methods for quantifying rearrangements suggest highly elevated rates of chromosomal change associated with the evolution of separate sexes in Rumex!

Mark Hibbins, Great Lakes Swashbuckler@rejectresubmit.bsky.social · 8mo ago

Very excited to share the capstone of my postdoc work with @stepheniwright.bsky.social, co-led by Wright lab grad student Cassandre with contributions from many others. We combined new methods with high-quality Rumex assemblies to dive into the remarkable history of rearrangement in this genus.

Stephen I Wright@stepheniwright.bsky.social · 11mo ago

Please share broadly: I am looking for a postdoctoral fellow to work on a collaborative project on the temporal population genomics of invasive Capeweed (using contemporary and herbarium genomics), with ‪‪@shaky-dingo.bsky.social‬ and colleagues

Genome Biology and Evolution@genomebiolevol.bsky.social · 12mo ago

Yuan, @stepheniwright.bsky.social‬, @johnstinchcombe.bsky.social‬, et al. examined signatures of selection across life stages in the angiosperm Rumex hastatulus and the moss Ceratodon purpureus. 🔗 doi.org/10.1093/gbe/evaf138 #genome #evolution #PlantSky

Testing for the Genomic Footprint of Conflict Between Life Stages in an Angiosperm and Moss Species

Abstract. The maintenance of genetic variation by balancing selection is of considerable interest to evolutionary biologists. An important but understudied

doi.org

Will Booker@wbooker.bsky.social · 2y ago

Final version of this out now in that beautiful Amnat typesetting! www.journals.uchicago.edu/doi/10.1086/...

The Genetic Consequences of Range Expansion and Its Influence on Diploidization in Polyploids | The American Naturalist

Abstract Despite newly formed polyploids being subjected to myriad fitness consequences, the relative prevalence of polyploidy, both contemporarily and in ancestral branches of the tree of life, sugge...

journals.uchicago.edu

Will Booker@wbooker.bsky.social · 2y ago

Happy to report the revised version of our manuscript on expansion load and diploidization in polyploids is now up on bioRxiv. Now with more robust results, 2 new equations (wow!), and about a dozen more supplemental figures. Check it out! 🧪 www.biorxiv.org/content/10.1...

Stephen I Wright@stepheniwright.bsky.social · 2y ago

Now out, new work led by @rejectresubmit.bsky.social - multiple origins of dioecy and sex chromosomes and genome-wide rearrangements shape the phylogenomics of Rumex

Evolution Letters@evolletters.bsky.social · 2y ago

What forces drive genome evolution in groups with young sex chromosomes? doi.org/10.1093/evle... Now in @evolletters.bsky.social by @rejectresubmit.bsky.social, @joannarifkin.bsky.social, @bmsacchi.bsky.social, @stepheniwright.bsky.social et al 📷: Joanna Rifkin

A photo of Rumex hastatulus, a flowering plant with clusters of small, red flowers.
Gina Baucom@gbaucom.bsky.social · 2y ago

Congrats to lab member Grace Zhang on the publication of her first dissertation chapter in @newphyt.bsky.social ! nph.onlinelibrary.wiley.com/doi/10.1111/...

Herbicidal interference: glyphosate drives both the ecology and evolution of plant–herbivore interactions

The coevolution of plants and their insect herbivores reflects eco-evolutionary dynamics at work – ecological interactions influence adaptive traits, which feed back to shape the broader ecological ...

nph.onlinelibrary.wiley.com

Santiago Claramunt@sclaramunt.bsky.social · 2y ago

I'm recruiting a PhD student to join my lab at the University of New Orleans starting in Fall 2025. Research topics will focus on building and using phylogenies to study the diversification of birds, with an emphasis on Neotropical bird radiations. Contact me if interested.

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Bianca M. Sacchi@bmsacchi.bsky.social · 2y ago

Hot off the press! Check out the latest version of our deep dive into Y chromosome degeneration and TE invasion in Rumex hastatulus! @stepheniwright.bsky.social @zoehumphries.bsky.social

Phased assembly of neo-sex chromosomes reveals extensive Y degeneration and rapid genome evolution in Rumex hastatulus

Abstract. Y chromosomes are thought to undergo progressive degeneration due to stepwise loss of recombination and subsequent reduction in selection efficie

academic.oup.com

Bianca M. Sacchi@bmsacchi.bsky.social · 3y ago

New preprint led by Zoë Humphries & I! We characterized rapid genome evolution and extensive degeneration in young Y chromosomes that arose in a repetitive region of low recombination. Taking a deep-dive into this phased assembly with Zoë and Stephen (not on this site yet) was super fun!

Bianca M. Sacchi@bmsacchi.bsky.social · 3y ago

New preprint led by Zoë Humphries & I! We characterized rapid genome evolution and extensive degeneration in young Y chromosomes that arose in a repetitive region of low recombination. Taking a deep-dive into this phased assembly with Zoë and Stephen (not on this site yet) was super fun!

Phased assembly of neo-sex chromosomes reveals extensive Y degeneration and rapid genome evolution i...

bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution

biorxiv.org