Peter Schafran

our hornwort paper got the cover of the @newphyt.bsky.social
nph.onlinelibrary.wiley.com/doi/10.1111/...

Evolutionary history of sex and accessory chromosomes in hornworts Click on the article title to read more.

📢 New publication 'Evolutionary history of sex and accessory chromosomes in #hornworts' by John Bowman and Jonathan Levins in @newphyt.bsky.social 🧪

doi.org/10.1111/nph....

It’s hard to believe our summer undergraduate researchers are wrapping up in just a few weeks! This summer of science has flown by. Catch up on their adventures in the lab, out in the field, around Ithaca, and beyond!

Martinez-Gomez Lab Plant Evo-Devo

A little belated but I've started a faculty position at Ecology, Evolution and Marine Biology department at @ucsantabarbara.bsky.social. I'm absolutely stoked! I'll be recruiting at all levels and will be at #Botany2025

Reach out!

www.martinezgomezlab.com

Only moss and liverwort get to be on the logo, eh?

This seems to work really well! Improved a draft genome with N50=0.5 Mb (flye 2.9.4/hifiasm-0.19.8), increased to N50=5 Mb (11 Mb after removing all the repetitive element contigs)

(A) Distribution of Isoëtes species from the Pacific Laurasian Clade. (B) Collection locations for plants included in this project.

#Phylogenetics & population structure of the western North American endemic Pacific Laurasian clade of #Isoëtes

New #AJB research by Forrest Freund, Daniel Gates, Matthew Johnson & @crothfels.bsky.social

doi.org/10.1002/ajb2... #botany #plantscience #genetics #biogeography #evolution

Efficient near telomere-to-telomere assembly of Nanopore Simplex reads Telomere-to-telomere (T2T) assembly is the ultimate goal for de novo genome assembly. Existing algorithms capable of near T2T assembly all require Oxford Nanopore Technologies (ONT) ultra-long reads w...

Preprint on hifiasm Nanopore-only assembly. Led by Haoyu Cheng: www.biorxiv.org/content/10.1...

Distinct patterns of genome size evolution in each bryophyte lineage are not correlated with whole genome duplication

🎉 Great news! The paper ‘Distinct patterns of genome size evolution in each bryophyte lineage are not correlated with whole genome duplication’ in @annbot.bsky.social by Nikisha Patel and co-authors is now #free for a limited time 🧵(1/8)

👉 doi.org/pcjr

@mossplants.bsky.social

#AoBpapers

Finally, thanks to everyone who came out to the symposium and field trip. Great to see the growing community dedicated to these strange little plants!

Big thanks also to our main sponsors, the Southern Appalachian Botanical Society and Catawba College @catawbacollege.bsky.social , and the Assoc. of Southeastern Biologists for hosting us.

The reviews are in, this was the best Quillwort Conference ever! Thanks so much to our speakers:
Gemma Milly
Lisa George
David Wickell @wickellomics.bsky.social
Megan Nibbelink @megantheebotanist.bsky.social
Jacob Suissa
John Evans

Rapid and dynamic evolution of a giant Y chromosome in Silene latifolia Some plants have massive sex-linked regions. To test hypotheses about their evolution, we sequenced the genome of Silene latifolia, in which giant heteromorphic sex chromosomes were first discovered i...

(2/2) Giant sex chromosomes were discovered in Silene latifolia more than 100 years ago. Two papers back to back now show the sequence of the 550 Mbp Silene Y chromosome helping to understand sex determination
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...

#plantscience

I am very proud of UMN Duluth undergrad Isabel Smalley, whose summer REU project led to co-authorship on her first paper, now out in Nature Plants! 🎉

Pan-phylum genomes of hornworts reveal conserved autosomes but dynamic accessory and sex chromosomes - Nature Plants This study presents 11 new hornwort (Anthocerotophyta) genomes that clarify the structure and evolution of sex and accessory chromosomes in bryophytes and shed new light on the early evolution of land...

Second paper of the year led by Peter Schafran from @fernway.bsky.social lab (Cornell University). Again hornworts rock !! www.nature.com/articles/s41...

Hornworts reveal a spatial model for pyrenoid-based CO2-concentrating mechanisms in land plants - Nature Plants Hornworts are the only land plants with a pyrenoid-based CO2-concentrating mechanism. This study presents evidence that some of the key components in algal pyrenoid-based CO2-concentrating mechanisms ...

First paper of the year, led by Tanner Robison from @fernway.bsky.social lab (Cornell University!). Hornworts rock!!
www.nature.com/articles/s41...

Pan-phylum genomes of hornworts reveal conserved autosomes but dynamic accessory and sex chromosomes - Nature Plants This study presents 11 new hornwort (Anthocerotophyta) genomes that clarify the structure and evolution of sex and accessory chromosomes in bryophytes and shed new light on the early evolution of land...

Paper #2 - we generated 10 new chr-level genomes for hornworts covering all families and most genera. Also the first look into their U/V sex chromosomes! 3/4 www.nature.com/articles/s41...

Two new #hornwort papers from our group out in Nature Plants @natureplants.bsky.social today - a great way to celebrate the new year! 1/4

One thing yinz should all know is whenever you write a title of the form <Catchy Phrase> [colon] <Description Of What The Paper is About> I reserve the right to decide whether or not the phrase following the colon is interesting or informative enough to be worth the aesthetic cost to my bibliography

Hornwort gametophytic pores (HGPs) and sporophytic stomates in hornworts.

#Viewpoint: A #stomate by any other name? The open question of hornwort gametophytic pores, their homology, and implications for the #evolution of stomates

James Paul Fortin and William E. Friedman
👇

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...

#LatestIssue

Predicted distribution of stomata on the gametophyte and sporophyte generation across land plants, assuming that Hornwort Gametophytic Pores (HGPs) are homologous to stomata.

Assembling the picture of stomatal #evolution

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...

👆 A #Commentary by James W. Clark on this article by James Paul Fortin & William E. Friedman
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📖 nph.onlinelibrary.wiley.com/doi/full/10....

#LatestIssue

Cover of New Phytologist 245:1. Fluorescent paradermal confocal microscope section of three hornwort gametophytic pores (HGPs) in Phaeoceros carolinianus.

On the cover: Fluorescent paradermal confocal microscope section of three hornwort gametophytic pores (HGPs) in Phaeoceros carolinianus. Image courtesy of Faye M. Rosin and William E. Friedman.

📖 See Friedman & Fortin nph.onlinelibrary.wiley.com/doi/10.1111/...

#LatestIssue