Tanja Pyhäjärvi
@pyhatanja.bsky.social
Professor in Forest Genomics and Breeding, Faculty of Agriculture and Forestry, University of Helsinki, Finland
Loves gymnosperms and bad behavior, best when combined!
Loves gymnosperms and bad behavior, best when combined!
Reposted by Tanja Pyhäjärvi
Job Opening. Faculty Position in Plant Evolutionary Biology at University of California, Davis in the Department of Evolution and Ecology (EVE, my home department).
More detail here.
recruit.ucdavis.edu/JPF07777
More detail here.
recruit.ucdavis.edu/JPF07777
August 13, 2026 at 3:45 PM
Job Opening. Faculty Position in Plant Evolutionary Biology at University of California, Davis in the Department of Evolution and Ecology (EVE, my home department).
More detail here.
recruit.ucdavis.edu/JPF07777
More detail here.
recruit.ucdavis.edu/JPF07777
Come back soon Yaniv! Preferably in June, so you can do some Scots pine crosses yourself!
As our three-month stay in Helsinki comes to an end, I’m leaving with a deeper appreciation for sauna, Moomins, the sea, pine seed development, my family, and especially my collaborator/host/friend @pyhatanja.bsky.social, and her lab members.
July 3, 2026 at 2:32 PM
Come back soon Yaniv! Preferably in June, so you can do some Scots pine crosses yourself!
#smbe2026 was a blast! Especially with these good friends and colleagues. @susanjohnston.bsky.social @alisondawnscott.bsky.social
July 3, 2026 at 2:29 PM
#smbe2026 was a blast! Especially with these good friends and colleagues. @susanjohnston.bsky.social @alisondawnscott.bsky.social
Reposted by Tanja Pyhäjärvi
Our brilliant PhD students are at #SMBE2026 !
S22: P334 Rachel Carboni with snMultiomics
S22: P339 @xindih.bsky.social with epistasis vs modularity in GRNs (w/ @fishcongen.bsky.social)
S22: talk at 17:45 @jennisiren.bsky.social with GxE in gene expression (w/ main sup @pyhatanja.bsky.social)
S22: P334 Rachel Carboni with snMultiomics
S22: P339 @xindih.bsky.social with epistasis vs modularity in GRNs (w/ @fishcongen.bsky.social)
S22: talk at 17:45 @jennisiren.bsky.social with GxE in gene expression (w/ main sup @pyhatanja.bsky.social)
#SMBE2026
S22: Evolution of gene regulation: insights from novel molecular and statistical approaches
🗓️ Wed Jul 1, 1:20pm - Part 1
🗓️ Wed Jul 1, 3:50pm - Part 2
🔗 smbe2026.org/programme
S22: Evolution of gene regulation: insights from novel molecular and statistical approaches
🗓️ Wed Jul 1, 1:20pm - Part 1
🗓️ Wed Jul 1, 3:50pm - Part 2
🔗 smbe2026.org/programme
June 24, 2026 at 8:32 AM
Our brilliant PhD students are at #SMBE2026 !
S22: P334 Rachel Carboni with snMultiomics
S22: P339 @xindih.bsky.social with epistasis vs modularity in GRNs (w/ @fishcongen.bsky.social)
S22: talk at 17:45 @jennisiren.bsky.social with GxE in gene expression (w/ main sup @pyhatanja.bsky.social)
S22: P334 Rachel Carboni with snMultiomics
S22: P339 @xindih.bsky.social with epistasis vs modularity in GRNs (w/ @fishcongen.bsky.social)
S22: talk at 17:45 @jennisiren.bsky.social with GxE in gene expression (w/ main sup @pyhatanja.bsky.social)
We are looking for a PhD researcher to work for the “ClimatePine” -project, conducted in collaboration among Natural Resources Institute Finland, Metsähallitus Forestry Ltd and University of Helsinki.
More info:
valtiolle.fi/en/jobs/rese...
More info:
valtiolle.fi/en/jobs/rese...
Research Scientist, doctoral researcher, forest breeding - Natural Resources Institute Finland
Open job: Research Scientist, doctoral researcher, forest breeding, Natural Resources Institute Finland - Find all jobs in Valtiolle.fi
valtiolle.fi
June 23, 2026 at 6:20 AM
We are looking for a PhD researcher to work for the “ClimatePine” -project, conducted in collaboration among Natural Resources Institute Finland, Metsähallitus Forestry Ltd and University of Helsinki.
More info:
valtiolle.fi/en/jobs/rese...
More info:
valtiolle.fi/en/jobs/rese...
Reposted by Tanja Pyhäjärvi
#SMBE2026
MBE Editor Symposium
@molbioevol.bsky.social
🗓️ Wed Jul 1, 3:50pm
🔗 smbe2026.org/programme
Talks by:
Daniel Falush
@hlouchova-lab.bsky.social
Hie Lim Kim
Li Liu
Flavia Mascagni
@pyhatanja.bsky.social
Tianqi Zhu
MBE Editor Symposium
@molbioevol.bsky.social
🗓️ Wed Jul 1, 3:50pm
🔗 smbe2026.org/programme
Talks by:
Daniel Falush
@hlouchova-lab.bsky.social
Hie Lim Kim
Li Liu
Flavia Mascagni
@pyhatanja.bsky.social
Tianqi Zhu
June 20, 2026 at 4:30 PM
#SMBE2026
MBE Editor Symposium
@molbioevol.bsky.social
🗓️ Wed Jul 1, 3:50pm
🔗 smbe2026.org/programme
Talks by:
Daniel Falush
@hlouchova-lab.bsky.social
Hie Lim Kim
Li Liu
Flavia Mascagni
@pyhatanja.bsky.social
Tianqi Zhu
MBE Editor Symposium
@molbioevol.bsky.social
🗓️ Wed Jul 1, 3:50pm
🔗 smbe2026.org/programme
Talks by:
Daniel Falush
@hlouchova-lab.bsky.social
Hie Lim Kim
Li Liu
Flavia Mascagni
@pyhatanja.bsky.social
Tianqi Zhu
Reposted by Tanja Pyhäjärvi
How is fertilisation different between flowering plants🌺 and naked-seed plants, like conifers🌳?
This illustration has been commissioned by @pyhatanja.bsky.social and Robert Kesälahti and is now freely available on Wikimedia Commons under a CC BY 4.0 licence
Link: bit.ly/4w9pyhq
🧪 #SciArt #EduSky
This illustration has been commissioned by @pyhatanja.bsky.social and Robert Kesälahti and is now freely available on Wikimedia Commons under a CC BY 4.0 licence
Link: bit.ly/4w9pyhq
🧪 #SciArt #EduSky
May 6, 2026 at 11:21 AM
How is fertilisation different between flowering plants🌺 and naked-seed plants, like conifers🌳?
This illustration has been commissioned by @pyhatanja.bsky.social and Robert Kesälahti and is now freely available on Wikimedia Commons under a CC BY 4.0 licence
Link: bit.ly/4w9pyhq
🧪 #SciArt #EduSky
This illustration has been commissioned by @pyhatanja.bsky.social and Robert Kesälahti and is now freely available on Wikimedia Commons under a CC BY 4.0 licence
Link: bit.ly/4w9pyhq
🧪 #SciArt #EduSky
Reposted by Tanja Pyhäjärvi
Registration for the International PhD School Plant Development 2026 is up and running, half the places have been already booked!
So don't wait until the deadline to register raissiglab.org/plantdevosch... !
Cost: €350.- for conference, accommodation, meals, and a wine tasting in a local winery 🍷
So don't wait until the deadline to register raissiglab.org/plantdevosch... !
Cost: €350.- for conference, accommodation, meals, and a wine tasting in a local winery 🍷
April 21, 2026 at 4:51 AM
Registration for the International PhD School Plant Development 2026 is up and running, half the places have been already booked!
So don't wait until the deadline to register raissiglab.org/plantdevosch... !
Cost: €350.- for conference, accommodation, meals, and a wine tasting in a local winery 🍷
So don't wait until the deadline to register raissiglab.org/plantdevosch... !
Cost: €350.- for conference, accommodation, meals, and a wine tasting in a local winery 🍷
Reposted by Tanja Pyhäjärvi
That time of year again! If you'd like an example of job apps in academia or industry, here's a good resource. If you got a job in industry or academia in the last few years, please consider adding yours! github.com/RILAB/statem...
GitHub - RILAB/statements: Successful Job Applications and Grants
Successful Job Applications and Grants. Contribute to RILAB/statements development by creating an account on GitHub.
github.com
April 18, 2026 at 3:54 PM
That time of year again! If you'd like an example of job apps in academia or industry, here's a good resource. If you got a job in industry or academia in the last few years, please consider adding yours! github.com/RILAB/statem...
Reposted by Tanja Pyhäjärvi
🌿 PhD opportunity in forest molecular ecology!
Study how trees and their microbiome respond to climate stress in the ECOSENSE forest 🌳
🧬 RNAseq | qPCR | Fieldwork | Interdisciplinary research
📅 Deadline: April 20, 2026
@uni-freiburg.de
Study how trees and their microbiome respond to climate stress in the ECOSENSE forest 🌳
🧬 RNAseq | qPCR | Fieldwork | Interdisciplinary research
📅 Deadline: April 20, 2026
@uni-freiburg.de
April 3, 2026 at 7:17 PM
🌿 PhD opportunity in forest molecular ecology!
Study how trees and their microbiome respond to climate stress in the ECOSENSE forest 🌳
🧬 RNAseq | qPCR | Fieldwork | Interdisciplinary research
📅 Deadline: April 20, 2026
@uni-freiburg.de
Study how trees and their microbiome respond to climate stress in the ECOSENSE forest 🌳
🧬 RNAseq | qPCR | Fieldwork | Interdisciplinary research
📅 Deadline: April 20, 2026
@uni-freiburg.de
Reposted by Tanja Pyhäjärvi
We're looking for a new colleague at Asssoc Prof level! Come join us in the Zoology Department at Stockholm University. A teaching profile in ecology, faunistics and/or physiology is beneficial. Find the full job advertisemnt here: su.varbi.com/en/what:job/...
Associate Professor in Zoology with focus on ecology and evolution
Department of Zoology at Stockholm University includes ca. 80 employees counting researchers, PhD students, and administrative staff. Research and education at the department occurs in an internatio
su.varbi.com
December 15, 2025 at 11:12 AM
We're looking for a new colleague at Asssoc Prof level! Come join us in the Zoology Department at Stockholm University. A teaching profile in ecology, faunistics and/or physiology is beneficial. Find the full job advertisemnt here: su.varbi.com/en/what:job/...
Thank you for hosting, Uppsala Universitet!
Great talk by @pyhatanja.bsky.social at Uppsala today! Very cool to learn about how polyembriony might allow gymnosperms to selectively support the best offspring.
December 16, 2025 at 4:43 PM
Thank you for hosting, Uppsala Universitet!
What a memorable day to give and listen to inaugural lectures of new professors at University of Helsinki! Here we are after the lectures with colleagues Fred Stoddard and Anne-Maria Pajari and the dean Ritva Toivonen from the Faculty of Agriculture and Forestry. @helsinki.fi
December 5, 2025 at 6:37 AM
What a memorable day to give and listen to inaugural lectures of new professors at University of Helsinki! Here we are after the lectures with colleagues Fred Stoddard and Anne-Maria Pajari and the dean Ritva Toivonen from the Faculty of Agriculture and Forestry. @helsinki.fi
It is a little bit depressing that 80 % of papers applying population genetic methods typically estimate π (nucleotide diversity per bp) wrong, and even worse, do not realize that when looking at the point estimates.
October 20, 2025 at 8:01 AM
It is a little bit depressing that 80 % of papers applying population genetic methods typically estimate π (nucleotide diversity per bp) wrong, and even worse, do not realize that when looking at the point estimates.
Reposted by Tanja Pyhäjärvi
Out after peer review, collaborative study from Nordborg & Weigel labs with help from many others. Not the largest collection of new Arabidopsis thaliana genomes, but we hopefully put forward some good ideas for how to think about pangenomes and their analysis!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
August 20, 2025 at 6:23 AM
Out after peer review, collaborative study from Nordborg & Weigel labs with help from many others. Not the largest collection of new Arabidopsis thaliana genomes, but we hopefully put forward some good ideas for how to think about pangenomes and their analysis!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Tanja Pyhäjärvi
Baffling failure of a well-studied trade-off in plants to survive the transfer from greenhouse studies to the open field. Intriguing study from @derekseveri.bsky.social @plantevolution.bsky.social and colleagues in @plosbiology.org
In the greenhouse, #Arabidopsis with hyperactive ACD6 have stronger pathogen defenses but are smaller & make fewer seeds. @derekseveri.bsky.social @plantevolution.bsky.social &co show that in the open field both advantages & disadvantages of the allele disappear @plosbiology.org 🧪 plos.io/465XPDR
![A hyperactive ACD6 allele reduces growth and causes necrosis only in the greenhouse. Top: Representative Arabidopsis thaliana rosettes from different genetic backgrounds. Yellow and blue labels represent descendants of a heterozygous ACD6 HIF line that are homozygous for either the Est-1 or the Col-0 allele of ACD6. Green and purple labels represent the Est-1 accession and the isogenic acd6 knockout null allele in that accession. Plants were grown in Tübingen in the greenhouse (GH-Tü), outdoors in the field in Tübingen (F-Tü), or outdoors in the field in Zurich (F-Z, a GMO-approved facility). Note the necrotic older leaves for greenhouse plants with the ACD6-Est-1 allele (red arrows). Bottom: Rosette size of individual plants, calculated by quantifying green pixels from images similar to those in the top panel. The line within each box represents the median. Boxes enclose the interquartile range (IQR) with whiskers extending to up to 1.5 times the IQR. Brackets indicate Mann–Whitney U-test results, with * indicating P < 0.05 after Benjamini–Hochberg correction for multiple testing across the four comparisons. Dotted lines extending from the mean of each distribution span the observed effect size, and a bootstrapped distribution of computed effect sizes [30] is shown in gray, centered on the mean of the second box in each pair (red dot). The black bar extending vertically from the red dot represents the 95% confidence interval of the effect size.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:5522ztebtekoor5efelihqhb/bafkreiaqunadge3nltwergaw3byzldjmd7k2prjfsz7tfv4ycecjvwxmtm)
July 16, 2025 at 9:28 AM
Baffling failure of a well-studied trade-off in plants to survive the transfer from greenhouse studies to the open field. Intriguing study from @derekseveri.bsky.social @plantevolution.bsky.social and colleagues in @plosbiology.org
Reposted by Tanja Pyhäjärvi
We are seeking two postdoctoral researchers or doctoral researchers for: (i) Remote sensing advised country-wide genotype-phenotype linking, and (ii) Country-wide study of genetic adaptation and population structure dynamics in a changing climate. jobs.helsinki.fi/job/Helsinki...
Two postdoctoral researchers and/or doctoral researcher, Future Forests
Two postdoctoral researchers and/or doctoral researcher, Future Forests
jobs.helsinki.fi
June 26, 2025 at 8:01 AM
We are seeking two postdoctoral researchers or doctoral researchers for: (i) Remote sensing advised country-wide genotype-phenotype linking, and (ii) Country-wide study of genetic adaptation and population structure dynamics in a changing climate. jobs.helsinki.fi/job/Helsinki...
Reposted by Tanja Pyhäjärvi
You know over the years what I have been really bothered by? When I was in college, bryophytes were taught as if they were relics of the past. Its sole purpose was to demonstrate trait progression leading to angiosperm, w/o mentioning their importance in nature, research, or potential in biotech.
July 4, 2025 at 1:06 PM
You know over the years what I have been really bothered by? When I was in college, bryophytes were taught as if they were relics of the past. Its sole purpose was to demonstrate trait progression leading to angiosperm, w/o mentioning their importance in nature, research, or potential in biotech.
Googlen NotebookLM on alkanut tehdä suomenkielisiä pocasteja. Nais-AI:n ääni kuulostaa karmivan samalle kuin Tuija Pehkonen. Pehkonenhan on ollut radiossa paljon äänessä.
July 4, 2025 at 12:59 PM
Googlen NotebookLM on alkanut tehdä suomenkielisiä pocasteja. Nais-AI:n ääni kuulostaa karmivan samalle kuin Tuija Pehkonen. Pehkonenhan on ollut radiossa paljon äänessä.
We are seeking two postdoctoral researchers or doctoral researchers for: (i) Remote sensing advised country-wide genotype-phenotype linking, and (ii) Country-wide study of genetic adaptation and population structure dynamics in a changing climate. jobs.helsinki.fi/job/Helsinki...
Two postdoctoral researchers and/or doctoral researcher, Future Forests
Two postdoctoral researchers and/or doctoral researcher, Future Forests
jobs.helsinki.fi
June 26, 2025 at 8:01 AM
We are seeking two postdoctoral researchers or doctoral researchers for: (i) Remote sensing advised country-wide genotype-phenotype linking, and (ii) Country-wide study of genetic adaptation and population structure dynamics in a changing climate. jobs.helsinki.fi/job/Helsinki...
Who started this ridiculous habit of using K for thousands? 10K run? 10 kelvin run is freezing! And now in scientific writing too. I know there are big battles going on now, but I will focus on this one instead.
June 26, 2025 at 7:13 AM
Who started this ridiculous habit of using K for thousands? 10K run? 10 kelvin run is freezing! And now in scientific writing too. I know there are big battles going on now, but I will focus on this one instead.
Reposted by Tanja Pyhäjärvi
The de-extinction of the dire wolves?
"Colossal Baloney"— @stemcells.bsky.social
www.latimes.com/business/sto...
@latimes.com by @hiltzikm.bsky.social
"Colossal Baloney"— @stemcells.bsky.social
www.latimes.com/business/sto...
@latimes.com by @hiltzikm.bsky.social
April 27, 2025 at 3:00 PM
The de-extinction of the dire wolves?
"Colossal Baloney"— @stemcells.bsky.social
www.latimes.com/business/sto...
@latimes.com by @hiltzikm.bsky.social
"Colossal Baloney"— @stemcells.bsky.social
www.latimes.com/business/sto...
@latimes.com by @hiltzikm.bsky.social
Reposted by Tanja Pyhäjärvi
The NSF discontinuing “misinformation” research b/c it threatens free speech is laughable. 9/
April 24, 2025 at 12:56 AM
The NSF discontinuing “misinformation” research b/c it threatens free speech is laughable. 9/