After 7,000 years without light and oxygen in #BalticSea mud, researchers bring prehistoric #algae back to life https://phys.org/news/2025-03-years-oxygen-baltic-sea-mud.html

Resurrection of a #diatom after 7000 years from anoxic Baltic Sea sediment: Sarah Bolius et al. https://academic.oup.com/ismej/article/19/1/wrae252/7942337

"Such deposits are like a time capsule containing valuable information about past ecosystems and the inhabiting biological communities, their population development and genetic changes"

#Protists #Diatoms #Microbes

Wonderful opportunity - APPLY!! #diatoms #microsky #protistsonsky

RE: https://bsky.app/profile/did:plc:wph3otrc2bw6kfgncntuv6ki/post/3ll4vv6o6ns2g

We just phenotyped 9 diatom species using the most advanced version of the Phenoplate yet: 384 samples measured at the same time!

https://www.frontiersin.org/journals/photobiology/articles/10.3389/fphbi.2025.1528646/full
#photosynthesis #diatoms

Weekend #Plankton #Factoid 🦠🦐
When we think of #nutrients that limit #algae growth, it is usually nitrogen or phosphorus, which is absolutely true, but occasionally, other factors become important. One is hydrated silica dioxide, which is necessary for #diatoms to produce their glass "frustule" shells. In both lakes and oceans, #silica can be drawn down to the point it prevents reproduction. So, in some locations "dissolved sand" can actually limit algal growth. #Science
https://www.nature.com/articles/s41598-019-44587-4

Did you know #diatoms are motile? These tiny glass cells have no cilia or flagella and a rigid body yet can glide on surfaces using a specialised slit in the cell wall called the raphe! What is the functional morphology of the raphe? All revealed in our new preprint www.biorxiv.org/content/10.1...

#Phytochromes: The 'eyes' that enable #microalgae to find their way in aquatic depths https://phys.org/news/2024-12-phytochromes-eyes-enable-microalgae-aquatic.html

#Diatom phytochromes integrate the underwater light spectrum to sense depth: Carole Duchêne et al. https://www.nature.com/articles/s41586-024-08301-3

"These photoreceptors enable them to detect changes in the light spectrum in the water column, thereby providing information regarding their vertical position within it."

#Protists #Algae #Diatoms #Microbes #Plankton #Biology #Phytoplankton

@helenczerski first glance of page shouted #diatoms #GrowthandForm

It's time to consider the Arcellinida shell as a weapon https://www.isep-protists.com/post/arcellinida-shell-weapon #ISEPpapers by Kenneth Dumack et al.: https://www.sciencedirect.com/science/article/pii/S0932473924000014

"why there is such a large morphological diversity in shell-bearing #amoebae and what is the function of shells anyway? It was long assumed shells are for defense, well let me try to convince you that their purpose is attack"

#protists #microbes #biology #predators #fungi #algae #diatoms #microscopy

@animalculum

#diatoms

Protein shell discovery reveals how #diatoms capture CO₂ so effectively https://phys.org/news/2024-10-protein-shell-discovery-reveals-diatoms.html

"diatom pyrenoids are encased in a lattice-like protein shell... not only gives the pyrenoid its shape, but it helps create a high CO2 concentration in this compartment. This enables Rubisco to efficiently fix CO2"

#algae #protists #microbes #biology #organelles

#Diatoms remove #CO₂ from the air for use in photosynthesis.

When they die, diatoms sink, taking with them #carbon from surface waters and locking it in deep ocean #sediments.

#Diatoms remove #CO₂ from the air for use in photosynthesis.

When they die, diatoms sink, taking with them #carbon from surface waters and locking it in deep ocean #sediments.

@Adrenochrome

Imagine what he could do with these:

#diatoms
@photography

Protein shell discovery reveals how #diatoms capture #CO₂ so effectively
Using #photosynthesis, they absorb large amounts of #CO2 and convert it into nutrients that feed much of #ocean life. Researchers discovered a protein shell that plays a key role in the diatoms' CO2 fixation. Using cutting-edge imaging technologies such as cryo-electron tomography, researchers were able to reveal molecular architecture of so-called #PyShell protein sheath and decipher its function.
https://phys.org/news/2024-10-protein-shell-discovery-reveals-diatoms.html

My copy of #Diatoms, a Victorian-style board game by Sabrina Culyba, has arrived! Proud of her for bringing an idea from start to #Kickstarter to reality.

#boardGames

Did you know?

Raphid #diatoms are one of the few eukaryotes that can glide! And they do it surprisingly... rap(h)idly! 🏎️ Congrats to Davutoglu et al. for their fascinating Nature #paper on the #molecular secrets behind this movement. Glad SequenceServer could help! 🌟

Check out the paper here: https://doi.org/10.1038/s42003-024-06889-w

#genetics #science #research

Als Teenager kaufte ich mein erstes Mikroskop und verliebte mich in das Leben im Wassertropfen. Besonders hatten es mir die Kieselalgen angetan, so dass mich mein Biolehrer schon "Dr. Diatomus" titulierte.
Danke, Txapi Ramirez für diese Speizialanfertigung, die an an meinen alte Leidenschaft erinnert. Das zweite Bild zeigt im Detail #pinnulariaviridis - mit Raphe, Zentralknoten und allem was dazu gehört.
#Kieselalgen #diatoms #diatomeen #mikroskopie #mikroskopieren #daslebenimwassertropfen

@mtxvp

#diatoms
#MarineLife

@mtxvp

#diatoms
#MarineLife

@mtxvp

#diatoms
#MarineLife