Lmst

#Salt stress is a growing problem for global #agriculture. A new study reveals that, in response to salt and #osmotic stress, the dual-action #evolutionarily conserved NatB catalytic subunit NAA20 in Poplar regulates #root #development.
https://doi.org/10.1111/jipb.13835
@wileyplantsci
#PlantSci #JIPB #botany

Diagram illustrating the impact of salt and osmotic stress on the induction of the N-terminal acetyltransferase subunit gene PsiNAA20 and resulting regulation of root development in Poplar.

New Explanation For Siberia’s Permafrost Craters
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https://news.agu.org/press-release/new-yamal-craters-explanation/ <-- shared technical article
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https://doi.org/10.1029/2024GL108987 <-- shared paper
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"KEY POINTS
• Surface ice-melt water can migrate downward driven by the osmotic pressure associated with a cryopeg, a lens of salty water below
• Overpressure can cause the frozen soil to crack resulting in mechanical explosion.."
#permafrost #hydrates # Russia #YamalPeninsula #BatagaikaCrater #Siberia #climatechange #geomorphology #mechanism #process #climatechange #methane #thawing #frozen #soil #Yamal #Taymyr #cryopeg #ice #water #hydrology #infiltration #osmotic #pumping #explosion #greehousegas

schematics - Warming causes melting in the active layer, which expands deeper into the permafrost. Meltwater then enters the salty cryopeg through osmosis, causing the expansion of the cryopeg, which cracks the overlying permafrost. When those cracks reach the surface, the rapid decrease in pressure in the cryopeg damages the methane hydrates below and triggers a rapid physical explosion. Images not to scale.

maps and phot insets - Siberian permafrost craters

photo and graphics - (Top) The first observed crater in the permafrost, detected in 2014 in the Yamal Peninsula, Siberia. Source: National Geographic. (Centre) Schematic representation of proposed cryopeg inflation. (Below) 2D Streamlines illustrating flow of water from the surface into the cryopeg (The
-axis is an axis of symmetry).

photo - Large craters in the tundra on Russia’s Yamal Peninsula are formed by a combination of warming and osmosis, according to new research in Geophysical Research Letters.

@mechanobio

So #actin would be able to start the #lumen opening, and then a switch to #osmotic pressure driven growth would allow further opening before #buckling of actin.
Interesting.

Computational modeling indicates that apical actin polymerization into a stiff network mediates initial lumen expansion and predicts a transition to pressure-driven growth in larger epiblasts to avoid buckling.

Understanding how #plants sense and respond to #osmotic stress can help us create stress-resistant high-#yield #crops. Here, Yu et al. discuss current work and provide insights on future directions in the field.
https://doi.org/10.1111/jipb.13622
@wileyplantsci
#JIPB #PlantSci #PlantScience #botany

Panel of diagrams illustrating water potential and water movement in organisms, and putative signal inputs for drought and osmotic stress signaling.

"Here we introduce double #emulsion droplet sensors that enable local measurements of #osmotic pressure intra- & extra-cellularly within 3D multicellular systems, including living tissues. After generating & calibrating the sensors, we measure the osmotic pressure in #blastomeres of early #zebrafish embryos as well as in the interstitial fluid between the cells of the #blastula by monitoring the size of droplets previously inserted in the embryo"

https://www.nature.com/articles/s41467-023-42024-9

#doubleDroplet #osmosis

#Protein complex protects #bacteria from #osmotic stress.

#SLP #CIS

https://phys.org/news/2023-04-protein-complex-bacteria-osmotic-stress.html

Researchers from the University of Tsukuba find that #Streptomyces phage tail-like particles are located intracellularly, unlike other contractile #injections systems, and protect the #bacterium against #osmotic #stress
#Microbiology #sflorg
https://www.sflorg.com/2023/04/mcb04142302.html

Ich möchte euch gern hin und wieder Beiträge aus unserem Archiv ans Herz legen.

Für heute habe ich den folgenden Beitrag ausgesucht: “Ich glaube nicht, dass man absolute Sicherheit durch absolute Kontrolle erhält” – Interview mit Daniel Marx (Osmotic Studios)

Der Text stammt aus 2017 und wurde von Yannic Borchert und Daniel Marx verfasst.

Natürlich würden wir uns über Feedback freuen!

Link: https://www.videospielgeschichten.de/ich-glaube-nicht-dass-man-absolute-sicherheit-durch-absolute-kontrolle-erhalt-interview-mit-daniel-marx-osmotic-studios/

#Orwell #OsmoticStudios #Osmotic #Überwachung #videospielgeschichten

#osmotic

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