François Parcy

Evaluate the product , not the method, so much more justified

J'attends ton fil sur le sujet impatiemment !

Plus facile à diaboliser qu'à défendre. La peur marche toujours

Ça sort d'où ?

Ces chiffres devraient être complétés par la proportion de surface consacrée aux paturages (~60%) ou aux cultures pour animaux (~20%).
On pourrait convertir une partie des cultures vers la nourriture humaine et garder une partie du pâturage. Mais les cultures nourrissent bcp les non-ruminants ...

An infographic from Our World in Data titled "Global land use for food production" uses a series of stacked horizontal bar charts to visualize the distribution of Earth's surface and the disproportionate land requirements of livestock. The first bar shows Earth's surface is 71% ocean and 29% land (141 million km²); the land surface is then broken down into 76% habitable land, 10% glaciers, and 14% barren land. Of the habitable land, 45% (48 million km²) is used for agriculture, while 38% is forests and 13% is shrubland. The agricultural land bar reveals a major disparity: 80% (38 million km²) is dedicated to livestock (meat, dairy, and textiles) including grazing land and cropland for feed, while only 16% is used for crops for direct human consumption and 4% for non-food crops. Finally, two smaller bars at the bottom contrast this land use with nutritional output, showing that while livestock uses 80% of agricultural land, it only provides 17% of global calories and 38% of global protein, whereas plant-based foods provide 83% of calories and 62% of protein.

80% of agricultural land is used for livestock (and textiles), yet this huge land use provides only 17% of our calories and 38% of our protein.

16% of the land used for crops provides 83% of our calories and 62% of our protein. It's past time we rethink what we eat.

So gorgeous ! Bravo @simonrdg.bsky.social et al.

Very interesting and thorough discussion of the history and challenges of the #genotype -> #phenotype mapping.
A genetic approach, of course. Are we missing something in that 'missing #heritability'?
academic.oup.com/genetics/adv...

LEAFY and the MADS-box transcription factors in action then ! 🤓🌸

My favorite sentence "The true extent of cistrome alterations may never be fully known; however, having peaks is undoubtedly more informative than having none"

Many roads lead to a plant cistrome: mapping and interpreting transcription factor binding in plants - Genome Biology Elucidating transcription factor (TF) function is essential for advancing our understanding and manipulation of the mechanisms that orchestrate gene expression programs underlying plant growth, develo...

Very nice review on the many roads to reach a plant cistrome. Super nice bibliographic ressource with many many techniques, none are perfect, all are somehow useful to reach the graal : a functional (= regulatory) cistrome.

Thanks to the authors for the big effort
link.springer.com/article/10.1...

The actin cytoskeleton is required to maintain plant cell division orientation against cellular geometry Actin guides plant cell division, shaping tissues in ways that defy geometric constraints.

What a treat to see the work from Camila Goldy @camilagoldy.bsky.social et al., @rdplab.bsky.social @ensdelyon.bsky.social now published 🫶

www.science.org/doi/10.1126/...

Very interesting combination between AF3 modeling and biochemical analyses !

🧪🌱🌸 My favourite conference is coming up again! 👏🏼👏🏼👏🏼. I am not sure I will be able to go this year but I’ll do my best! #FlowerPower #PlantScience #Conference

www.cnrs.fr/fr/actualite...

@minyaaa.bsky.social

If you like flowers, molecular mechanisms, friendky meetings and the Côte d'Azur, register to the 'Flower meeting' at the presqu'ile de Giens in June (15th-19th)

www.ens-lyon.fr/RDP/FlowerWo...

Why do I continue to conduct research when it seems to me that it is likely to decline in the coming decades and therefore will not enable us to resolve the major crisis of the Anthropocene?

rdcu.be/e15sq

j'adore les dahlias ! here are mine, shyly hiding their reproductive organs with petal/stamen chimeras

En 2025, j'ai publié "Les clés du champ: comment domestiquer les plantes". Parfois, je regarde les commentaires.

Aujourd'hui, j'ai vu celui-ci : Excellent mais seulement 3 étoiles car je suis MANIPULATEUR !!

Et oui, je travaille dans le domaine alors je suis en conflit d'intérêt...🤔🤷‍♂️

ok merci, je n'avais pas compris que c'était équivalent

Je veux bien des études de cas documentés sur le sujet !

La permaculture : solution ou illusion ? / Afis Science - Association française pour l’information scientifique À l’heure où les enjeux environnementaux, mais aussi socio-économiques, liés à l’agriculture deviennent de plus en plus pressants, un mot revient (…)

Un article que j'ai trouvé interessant, étayé et équilibré sur la permaculture.

www.afis.org/La-permacult...

bonus : adding the inhibitor molecule increases the colored sectors

Very nice molecular mechanism based on positive feedback loop to maintain a pattern (white vs color).

But how is the pattern originally initiated to be same same in every flower ?

In colored regions, the chalcone synthase (CHS) gene that contributes to synthetize pigments, also makes compounds that prevent the Dicer system to chop down the CHS mRNA. And thus CHS keeps on working.
In white area, CHS mRNA is sliced --> there is less CHS activity --> thus no pigment

Have you ever wondered why some petal are bicolor ? Like in dahlias or petunia ?
(Part of) the answer is in this publication :
doi.org/10.1093/pcp/...

Merci pour ce fil. Effectivement, il faut lire jusqu'au bout sur l'usage qui en sera fait !

Rethinking insecticide toxicology for the 21st century Insecticides remain indispensable for crop protection and food security, yet their widespread use may contribute to the global decline of beneficial i…

www.sciencedirect.com/science/arti...

Rethinking insecticide toxicology for the 21st century Insecticides remain indispensable for crop protection and food security, yet their widespread use may contribute to the global decline of beneficial i…

Rethinking insecticide toxicology for the 21st century: a review written with Philip Batterham. Led by Lautaro Gandara @embl.org and Felipe Martelli: www.sciencedirect.com/science/arti...