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Peter C. McKeown

@peter-c-mckeown.bsky.social

Lecturer and plant scientist, University of Galway, Ireland; coordinator, MSc Climate Change, Agriculture & Food Security; all opinions my own; he/him 🏳️‍🌈

9 Posts160 Follower203 Folgt
Plant Science Spotlight@plant-sci.bsky.social · last mo.

🌱🧬 TIE1 is a maternal brake blocking fertilization-independent endosperm. In tieQ mutants, autonomous endosperm forms, like fis mutants. TIE1 recruits FIS-PRC2 to silence key targets. Insights into apomixis and fixing hybrid vigor. #plantscience @natplants.nature.com www.nature.com/articles/s41...

TIE1 acts as a maternal brake on fertilization-independent endosperm development by associating with PRC2 to enforce imprinting - Nature Plants

Plants that form seeds without fertilization could fix hybrid vigour. This study determines that the maternal protein TIE1 serves as a brake to prevent autonomous seed development without fertilizatio...

nature.com

International Food Policy Research Institute@ifpri.org · 2mo ago

🆕 #Blog: Half a day’s pay for a healthy household diet in PNG. ✏️ Emily Schmidt (IFPRI), Kristi Mahrt & Helmstrude Sikas Iha (IFPRI) 🔗 https://devpolicy.org/half-a-days-pay-for-a-healthy-household-diet-in-png-20260627/ @cgiar.org #PapuaNewGuinea

Half a day’s pay for a healthy household diet in PNG - Devpolicy Blog from the Development Policy Centre

New PLUWS 2025 survey data show healthy diets cost up to 45% of a low-skilled worker's daily wage in urban PNG, raising NCD risks.

devpolicy.org

Peter C. McKeown@peter-c-mckeown.bsky.social · 2mo ago

Important implications for all of us involved in pedagogy in the plant sciences and related fields…

Plant Science Spotlight@plant-sci.bsky.social · 2mo ago

🌱🧠Generative AI is reshaping plant science, democratizing data analysis & lowering entry barriers. But training must evolve Six strategic shifts needed: AI literacy, critical thinking, bias awareness, & equitable access #plantscience @bar-plantbio.bsky.social academic.oup.com/plcell/artic...

Plant Science Spotlight@plant-sci.bsky.social · 2mo ago

🌱🧠Generative AI is reshaping plant science, democratizing data analysis & lowering entry barriers. But training must evolve Six strategic shifts needed: AI literacy, critical thinking, bias awareness, & equitable access #plantscience @bar-plantbio.bsky.social academic.oup.com/plcell/artic...

Reimagining plant science training in the era of generative artificial intelligence: a global perspective

Abstract. In recent years, a deluge of big and diverse datasets from hundreds of plant species, coupled with spectacular innovations in artificial intellig

academic.oup.com

Aline Probst@alineprobst.bsky.social · 2mo ago

Have you ever wondered how the epigenome is modified during the transition from seed to seedling? Here, we show that water uptake by Arabidopsis seeds triggers the eviction of the H2B variant H2B.8, thereby revealing replication-independent chromatin reprogramming. www.nature.com/articles/s41...

Replication-independent eviction of the histone variant H2B.8 reveals chromatin reprogramming during seed imbibition - Nature Communications

The transition from seed to seedling requires chromatin reprogramming. By studying the histone variant H2B.8, the authors show that it organizes silent chromatin in dry seeds and reveal that water upt...

nature.com

Tahir Ali@tahirali-biomics.bsky.social · 2mo ago

Great to present our latest work at #SMBE2026 in Copenhagen! Using temporal genomics in natural populations of Arabidopsis lyrata, we asked whether standing genetic variation can support rapid adaptation under contemporary climate change.

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Josep Mercadal@josepmercadal.bsky.social · 3mo ago

When did liverwort oil body cells originate? Here, Susan and I provide quantitative evidence that they emerged by at least the Middle Devonian (~390 Ma!), shedding light on a key anti-herbivory defense mechanism of early land plants!

New Phytologist@newphyt.bsky.social · 3mo ago

Homology of the dark cells of Paleozoic liverworts with the specialized oil body cells of modern liverworts (Marchantiophyta) Tremblay and Mercadal nph.onlinelibrary.wiley.com/share/BWYYSE...

Examples of oil bodies of extant liverworts of the Jungermanniopsida (Bazzania sp., Riccardia chamedryfoli, and Pallavicinia sp.), Marchantiopsida (Conocephalum sp., Marchantia polymorpha) and Haplomitriopsida (Treubia lacunosa and Haplomitrium sp.) and dark cells of Devonian liverworts Pallaviciniites devonicus and Metzgeriothallus sharonae.
Plant Science Spotlight@plant-sci.bsky.social · 4mo ago

🌾🧬PlantGFM is a genomic AI model trained on 12 plant genomes. It designs entirely new plant genes. Seven AI generated candidates all worked in living plants. Two produced stable proteins. A new era for plant synthetic biology #plantscience advanced.onlinelibrary.wiley.com/doi/10.1002/...

PlantGFM: A Genomic Foundation Model for Discovery and Creation of Plant Genes

A plant genomic foundation model pre-trained on 12 species enables both accurate gene prediction and de novo gene design. Through AI-human knowledge screening, seven designed sequences showed transcr...

advanced.onlinelibrary.wiley.com

Pádraic Fogarty@whittledaway.bsky.social · 4mo ago

Were constantly told by the forestry industry that commercial plantations are good for carbon when undisturbed native forests are so much better

Svante Thunberg@svantethunberg.bsky.social · 4mo ago

"Researchers found undisturbed primary forests store 83% more carbon per acre than the managed forests that are replacing them." This study is "shocking" - as in "we've been lied to by the forest industry" and... it's not in our climate models. sustainability.stanford.edu/news/shockin...

Yasin Dagdas@plantophagy.bsky.social · 4mo ago

One of my role models in academia, combining brilliance with humility-Noboru Mizushima, & I like him even more now ❤️ “If I was given the chance to repeat my research career, I think I would choose to study plant biology.” journals.biologists.com/jcs/article/...

Interview with Noboru Mizushima – President of the Japan Society for Cell Biology

Noboru Mizushima is Professor of Biochemistry and Molecular Biology at the University of Tokyo, Japan, where he runs a laboratory studying the mechanisms and physiological functions of autophagy and o...

journals.biologists.com

The Arabidopsis Information Resource (TAIR)@tairnews.bsky.social · 7mo ago

🎉📣 #TAIR12, the latest reannotation of the Arabidopsis thaliana genome, is now available under accession number PRJEB100887 on ENA and NCBI! Thank you all the volunteer researchers whose hard work has made this possible! #plantscience #plantbiology 🧪 bit.ly/3ZHtneT

Announcing the publication of TAIR12: Consult the fully reannotated genome on the European Nucleotide Archive - Phoenix Bioinformatics

TAIR (The Arabidopsis Information Resource), together with our nonprofit host Phoenix Bioinformatics, is pleased to announce the public release of TAIR12

bit.ly

Jean-Michel Ané@jeanmichelane.bsky.social · 10mo ago

Oops.... domestication fail! -Domesticated rice alters the rhizosphere microbiome, reducing nitrogen fixation and increasing nitrous oxide emissions | Nature Communications

Domesticated rice alters the rhizosphere microbiome, reducing nitrogen fixation and increasing nitrous oxide emissions

Crop domestication has revolutionized food production but increased agriculture’s reliance on fertilizers and pesticides. We investigate differences in the rhizosphere microbiome functions of wild and domesticated rice, focusing on nitrogen (N) cycling genes. Shotgun metagenomics and real-time PCR reveal a higher abundance of N-fixing genes in the wild rice rhizosphere microbiomes. Validation through transplanting rhizosphere microbiome suspensions shows the highest nitrogenase activity in soils with wild rice suspensions, regardless of planted rice type. Domesticated rice, however, exhibits an increased number of genes associated with nitrous oxide (N2O) production. Measurements of N2O emissions in soils with wild and domesticated rice are significantly higher in soil with domesticated rice compared to wild rice. Comparative root metabolomics between wild and domesticated rice further show that wild rice root exudates positively correlate with the frequency and abundance of microbial N-fixing genes, as indicated by metagenomic and qPCR, respectively. To confirm, we add wild and domesticated rice root metabolites to black soil, and qPCR shows that wild rice exudates maximize microbial N-fixing gene abundances and nitrogenase activity. Collectively, these findings suggest that rice domestication negatively impacts N-fixing bacteria and enriches bacteria that produce the greenhouse gas N2O, highlighting the environmental trade-offs associated with crop domestication.

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