You are finishing your PhD and looking to continue in science?
The Martin lab @biology-unige.bsky.social has an open postdoctoral position in cell biology to study cell-cell fusion. For more information, please consult mocel.unige.ch/research-gro....
Thanks for reposting!
Do the dance, do the algal dance.
Beautiful! Thank you for sharing!
We enriched for magnetotactic bacteria at the Microbial Diversity course at MBL a few summers back, and had several of these "raspberry" looking colonial types in cultures. Here, they're attracted to a magnet (on the right) but occasionally broke free and quickly rejoined the magnet herd.
P. tenue, its symbionts, and natural habitat
End-of-year preprint dump! A collaboration with @messorensen.bsky.social and German and Korean colleagues: "The phylogenetic context for the origin of a unique purple-green photosymbiosis "
doi.org/10.64898/202...
Happy solstice! These ice crystals on our windshield might have delayed the morning trek into lab, but they're at least pretty to look at! βοΈ
I'm so sorry for your loss. ππΎ
Our latest, led by the inimitable Chris Kay "Dated gene duplications elucidate the evolutionary assembly of eukaryotes" in which we used gene duplications to test hypotheses of eukaryogenesis. TLDR? They're all wrong. With @tweethinking.bsky.social @anya1.bsky.social @ssolo.bsky.social Davide Pisani
Our attempt to give multinucleate cells the spotlight they deserve (seriously, theyβre everywhere), led by the fearless @mrosjac.bsky.social and with @Markus Ganter
doi.org/10.32942/X2M...
Weβd love your feedback while this goes through the peer review process!
#MicroEvoSky
#ProtistsonSky π§ͺπ
So happy to announce our new preprint, βA geothermal amoeba sets a new upper temperature limit for eukaryotes.β We cultured a novel amoeba from Lassen Volcanic NP (CA, USA) that divides at 63Β°C (145Β°F) π₯ - a new record for euk growth!
#protistsonsky π§΅
Thank you!!
That's exciting! I can't wait to see the results. I've found that some commercially available gamma tubulin antibodies even work in Rhizaria. I know many companies' antibodies are based on "proprietary peptides," so it's hard to predict if your species of interest even has the right region.
Based on this, Myo2A-1 and Myo2B-1 (both N-terminal) might work for N. fowleri? But this region is before the SH3-like predicted fold, with no predicted structure. These N-terminal regions vary widely in length outside of Heterolobosea and is only around 50-60% identical with the Naegleria genus.
Thanks Omaya! I didn't test them in other species, but I did look at their similarity to the aligned myosin 2 of 'closer' relatives like Naegleria fowleri. Here's the N. gruberi (Ng) peptide sequences we used vs those of N. fowleri (Nf). I highlighted the identical residues in green.
Our work on Naegleria Myosin 2 is out!
Naegleria encodes 3 Myo2s which contract its actin networkβthe first evidence of contractile Myo2 outside of Amorphea.
Myo2 is actually widespread in Naegleria's relatives and correlates with fast cell crawling.
Read more: www.cell.com/current-biol...
Finally out! We measured mutations in tetraploid potato. Highlights:
- higher mutation rates in L1 than L2
- even higher rates and a distinct oxidative stress signature outside of meristems
- lower mutation rates in genes everywhere we looked
More π
www.pnas.org/doi/10.1073/pnas.2514507122
An Asgard archaeon with internal membrane compartments
Brilliant study led by @fmacleod.bsky.social and Andriko von KΓΌgelgen. Tight collaboration with @buzzbaum.bsky.social and lab. Congrats to all authors!
www.biorxiv.org/content/10.1...
Just under a month leftβapply by December 5 through the link on my website!
π¨Our collaboration with @centriolelab.bsky.social & @gautamdey.bsky.social is out today in @cp-cell.bsky.social
We show that #Expansion #Microscopy is a broad-spectrum modality for Euks, enabling 3D phenotypic maps rooted to phylogeny.
#ProtistsOnSky #SciComm #SciSky
www.cell.com/cell/fulltex...
Our labβs variegated peperomia makes green flecks on leaves, but only on the abaxial side. Itβs the typical sandwich: L1 green-L2 yellow-L3 green, so guessing flecks are L1-derived cells dividing periclinally into L2. But how only on the abaxial side? Something to do with the super thick epidermis?
Just for fun, here's a game I like to call "Find the neuron" with examples of olfactory sensory neuron images from Ε mΓt et al 2017 (doi.org/10.7554/eLif...) and Filoreta ramosa, a free-living syncytial amoeba from a salt marsh.
My PhD work is up on bioRxiv! Read all about the #actin and #microtubule #cytoskeleton of the Rhizarian #amoeba Filoreta ramosa here: www.biorxiv.org/content/10.1...
Autumn is just the best
This is glorious! And diatoms are as weird as ever!
Happy to have contributed to this great article: #Protist genomics: key to understanding eukaryotic evolution. Congrats Alexandra Schoenle et al. #ProtistsOnSky
authors.elsevier.com/sd/article/S...
Highlighted paper! Daisuke Yamagishi, et al. open a new front in the drive to understand photosymbiosis in protists.
Articleβ‘οΈ doi.org/10.1111/jeu....
#protistsonsky
Synopsis: A hungry amoeba attempts to eat another amoeba roughly equal to its own size. After numerous failed attempts to engulf it, and briefly losing it in a mess of detritus, it encounters a flailing nematode. Fearing for its life, it abandons its prey, and finally captures a smaller meal.
An amoeba movie I made: "hungry" #protistsonsky #amoeba
I contributed an essay and some images to the new Living Futures series, an outgrowth of the fantastic Living Histories series organized by Sri Biswas and others.
medium.com/@thelhseries...
iyerbiswas.com/outreach/liv...
1/3
Poor dude can't catch dinner #protistsonsky #amoeba
