Rainer Melzer
@ucdflowerpower.bsky.social
1.2K followers 1.7K following 140 posts
Associate Professor at UCD Dublin. Plant genetics & development. Crops, agriculture, hemp, cereals. Evo-devo, transcription factors. My views.
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ucdflowerpower.bsky.social
Politik ist nicht nur evidenzbasiert sondern soll auch Gefühle ansprechen. Heute wollte man den Vegetariern vielleicht mal eins reinmeinern. Scheint geklappt zu haben.
ucdflowerpower.bsky.social
Endlich wird da mal was gemacht und die echten Probleme werden angepackt. Tausende Bürger packen schließlich täglich verwirrt ihren Einkauf aus und stellen fest, dass es kein Sojatier gibt und Sojawurst ein riesiger Betrug am Kunden ist.
ucdflowerpower.bsky.social
Phew, I avoided that on purpose :) My gut feeling is catabolism is more substantial for primary vs. specialized.
Maybe 70/30 ana vs cat for primary and 90/10 for specialized?
In terms of energy most of it goes to C&N?
Reposted by Rainer Melzer
spicybotrytis.bsky.social
If you were the predicting sort, how much of a plants metabolism would be in the following four categories?

Primary Anabolism
Primary Catabolism
Specialized Anabolism
Specialized Catabolism

Feel free to define "how much" by gene #, enzyme #, flux fraction, etc.

And your own 1 v 2 defn.

#secmet
ucdflowerpower.bsky.social
In terms of energy expenditure 70 % primary vs. 30 % specialized.
In terms of gene and enzyme number 30 % primary vs. 70 % specialized.
Reposted by Rainer Melzer
oxfordacademic.bsky.social
Celebrate 75 years of pioneering plant science research! 🪴🎉

@jxbotany.bsky.social marks this important milestone with a collection of new Darwin Reviews from leading plant scientists.

Take a snapshot of plant science today: oxford.ly/4gSKOB1
A celebratory graphic for the Journal of Experimental Botany's 75th anniversary. Oxford University Press.
ucdflowerpower.bsky.social
The link doesn't seem to work anymore? It's still 1st October though 😅
Reposted by Rainer Melzer
natbiotech.nature.com
A tiny white-petalled weed beloved of plant biologists has received a CRISPR-fueled makeover, turning it into a supersized ruby-colored bloom www.nature.com/articles/s41...
Blooms supersized - Nature Biotechnology
Nature Biotechnology - Blooms supersized
www.nature.com
Reposted by Rainer Melzer
kunkakom.bsky.social
LMU Professors from various disciplines share their perspectives on the role of AI in science
www.lmu.de/en/newsroom/...
ucdflowerpower.bsky.social
Aus der Reihe Sport ist Mord.
ucdflowerpower.bsky.social
Diese Initiative ist ein echter... nothing burger.
Reposted by Rainer Melzer
ucddublin.bsky.social
🏫📑 Children’s School Lives: Kids experience mixed emotions in transition to secondary school

The move to secondary school is a balancing act for most children as they weigh their excitement for more independence against fears of losing friends, according to latest @cslstudyucd.bsky.social report.
Composite image of Children's School Lives report and stock photograph of children in the class room
Reposted by Rainer Melzer
peiferlabunc.bsky.social
OK--fluorescent protein friends. We want an antibody to TagRFP that works in immunofluorescence. Any suggestions? Re-post please
Reposted by Rainer Melzer
somssich.bsky.social
The discovery of genes underlying interesting traits for #PlantBreeding is one of the most important & difficult tasks here @kwsgroup.bsky.social.

We are looking for a Quantitative Geneticist to help us with this!

#PlantScience #PlantBreeding #PlantGenetics #PlantScienceJobs #PlantSciJobs
Scientist (m/f/d) in Quantitative Genetics for Trait Discovery
Scientist (m/f/d) in Quantitative Genetics for Trait Discovery
jobs.kws.com
Reposted by Rainer Melzer
Reposted by Rainer Melzer
sebiology.bsky.social
🚀 Ready to shape the future of experimental biology?

Join the SEB leadership team as a Special Interest Group Convenor!

Expand your network, influence research, and develop your leadership skills.

Apply now:
www.sebiology.org/resource/joi...
ucdflowerpower.bsky.social
Well, epistasis and intralocus epistasis are also two different terms. I suppose it depends on what is more advantageous in terms of teaching and understanding the underlying biology. I don't have an immediate answer to that.
ucdflowerpower.bsky.social
I guess we call them different things because the historic origin was two phenotypes/one locus vs three phenotypes/two loci. The terms blur into each other as loci converge at the level of bp.
ucdflowerpower.bsky.social
I think I agree. But would it be more intuitive to turn it around and say epistasis is dominance at different loci? That would solve the problem of explaining that dominance can only relate to alleles of the same gene.
ucdflowerpower.bsky.social
In the first case only one locus is affected, in the second two loci are affected and epistasis requires two loci?
Ah, ok, I think I get it. Intra locus epistasis refers to the single snp?
Makes sense I guess. I gotta think about it 😅
ucdflowerpower.bsky.social
Agreed. The effect of TAA depends on e.g. a frame shift preceding it and that's epistasis.
But if you have two otherwise completely identical genomes and they only differ in AAA vs TAA in one gene, doesn't that require dominance as a concept to describe the het?
Reposted by Rainer Melzer
jrossibarra.bsky.social
What's the difference between dominance and epistasis? Two physically distinct mutations in a gene interact such that the het is identical to one of the homozygotes. If I define the gene as a locus, we call this dominance. If I define each bp as a locus, we call this epistasis.
ucdflowerpower.bsky.social
But for dominance you only need one mutation? AAA lysine / TAA stop het is dominant over TAA stop homozygote. How does epistasis feature there?
Reposted by Rainer Melzer
spicybotrytis.bsky.social
It’s only a Nobel if picked in the picturesque hill country of animal genetics, anywhere else it is a sparklingly one off cute tale of discovery.