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Items tagged with: bacteria


🧬🌟 Is evolution really random? A new study in Nature challenges the classic theory that DNA mutations are purely random and independent of the environment. The study shows that bacteria can adapt their mutation rates in response to different stresses. #evolution #mutation #bacteria https://phys.org/news/2024-01-evolution-random-previously-thought.html


Awesome work from Rotem Sorek lab in our department:
Rotem's lab & others found this past decade >150 bacterial defense mechanisms against phages.
This new work, led by Erez Yirmiya, explores phage *anti-defense* mechanisms, and it's really cool!
#bacteria #bacteriophage #phages

https://www.nature.com/articles/s41586-023-06869-w


πŸŽ‰ New preprint from the (MDM) lab:

πŸ”— https://www.biorxiv.org/content/10.1101/2023.11.22.567924v1

❓ How accurately can we predict diverse #bacteriophage bacteria-interactions from their #genomes only ?

🦠 We created a matrix of >38k #phage-#bacteria interactions to find out (=> AUROC 86%) & used our predictions to recommend tailored phage cocktails.

Predicting which phages infect which specific strains would allow to better fight bacterial infections and understand #microbial ecology.

1/n

#microbiology #virus #phagotherapy


Marine #microorganisms are crucial for #ocean health.

#Bacteria, #archaea, #fungi, #algae and #viruses make up most of the biomass in the seas and form the base of marine food webs.

They support nutrient cycling and drive crucial biogeochemical processes, including key steps in the carbon, nitrogen and silicon cycles.

Ocean modelling must evolve to take their biological complexity into account.

#biology #ecology #oceans
https://www.nature.com/articles/d41586-023-03425-4


#Bacteria: The Tiny Giants

3-part #BBC #radio series narrated by #TimHayward and featuring a dozen or so #microbiologists, including (among others) #LauraHug, #PaulTurner, #ValeriaSouza and yours truly (discussing the #LTEE).

https://www.bbc.co.uk/programmes/m001qlzq


New #ISEPpapers #preprint! Encyclopaedia of #DNApolymerases localized in #organelles: Evolutionary contribution of diverse #bacteria including the proto-#mitochondrion https://www.biorxiv.org/content/10.1101/2023.08.28.554543v1 #eukaryogenesis #evolution #microbes


Organisms use a range of defense systems against #parasites. Using a #bacteria-#phage model system, @drbridgetwatson @edzewestra &co ask what drives the transient evolution of different systems; implications for #HostEcology & #pathogenicity #PLOSBiology https://plos.io/3LoFSoM


A new high resolution microbial time #tree calibrated using the Great Oxidation Event (GOE) ~2.33 billion years ago highlights the evolution of aerobic lifestyles in #bacteria. Most bacteria were ancestrally anaerobic (Bacillota/Firmicutes are the oldest) and the transition to an aerobic lifestyle was initiated by Cyanobacteria, which seeded #oxygen production and consumption capabilities to the broader bacterial tree over hundreds of millions of years.

https://www.biorxiv.org/content/10.1101/2023.08.08.552427v1


Ever wondered why your #TRIS-buffered solutions turn turbid on the shelf so quickly? Look no further, it’s #pseudomonas. new study from our lab out as a preprint describing a complete TRIS degradation pathway in #bacteria https://www.biorxiv.org/content/10.1101/2023.08.01.551466v1.abstract?%3Fcollection= #microbiology #HGT #biorxiv


Excited to present some work at #solsticeschool2023 from the Spring conducted at Biotech Without Borders. We deployed an instance of the BioArtBot started at Counter Culture Labs by @timdobbs . It's a little bit of lab #automation, #bacteria, and #art. If that interests you pop by at 17:00 EDT Aug 3rd. Pls check it out along with other wonderful contributions at

https://solsticeschool.scholar.social/2023/programme/

Thanks to @leonelcock3 and @ATinyGreenCell for their roles in helping this happen :boost_requested: #bwob


I liked @maalgover 's discussion of bacterial "species" because always be thinking about #bacteria, I appreciated that @platypus introduced me to MARC, and it's where I met @JMMaok for the first time (and now we meet regularly as part of @TranslateScience)


Happy to see the first experimental project I led finally out in the world! With Jeremy Moore, Sydney Olsen, and Mike Travisano

We combined experimental evolution and mathematical modeling to ask: do bacteria evolve to swim away from phages?

1/n

https://doi.org/10.1101/2023.04.29.538831

#microbiology #evolution #ecology #phages #phage #bacteria #MicrobialEvolution #MicrobialEcology


Phages... So many #phage and they are all #prophage integrated into a #bacteria #genome

A few million prophages from > million bacterial genomes

Are prophages good or bad for bacteria? The data shows they provide heaps of benefits

The paper is in #biorxiv and the data is on #figshare

https://www.biorxiv.org/content/10.1101/2023.04.20.537752v1

https://open.flinders.edu.au/projects/Prophage_predictions/162127


Endless microbes most beautiful and most wonderful

"To reflect the importance of microbes and to create a home for microbiology research using genetics, PLOS Genetics will be launching a new section on Microbial Genetics. "

https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1010695

#microbiology #microbes #bacteria #protists #archaea


Not all proteins arise from consecutive codons. We developed a new tool - PRFect - to identify programmed ribosomal frameshifts.

Designed, built, trained, and tested with #phage genomes, it also works on #bacteria and #eukaryotes too.

https://www.biorxiv.org/content/10.1101/2023.04.10.536325v1


Restriction endonuclease cleavage of phage DNA enables resuscitation from Cas13-induced bacterial dormancy
https://www.nature.com/articles/s41564-022-01318-2
#phage #bacteria #crispr


Thanks to @ATinyGreenCell we now have a beautiful bacterial rainbow for agar art! Science has never looked so beautiful #microbiology #bacteria #rainbow #AgarArt #science #art #USFCMS #STEAM


As we (humans) get to grips with how to scale up #hydrogen as an energy source (and for energy storage) and as part replacement for #fossilfuels, this new research (once again) shows that #microbes have beaten us to it and evolved their own solutions for energy - in this case using hydrogen power.

This new research in Nature Microbiology explores how hydrogen in seawater supports growth of multiple and diverse #bacterial species.

Fof those (like me) in #Melbourne , you may be interested that the research also includes study of this process within #PortPhillipBay sediments.

Learn more on:

https://www.nature.com/articles/s41564-023-01322-0

#microbiology #bacteria #ecology #MicrobialEcology


Homology of DNA import systems in #archaea to the #conjugation transport systems in #bacteria.

New research in Nature Communications on: https://www.nature.com/articles/s41467-023-36349-8

#microbiology #HorizontalGeneTransfer #evolution


There's lots of different kinds of bacteria in there. Yesterday almost all the cells were long and slender, but today they're mostly small and stubby. And they really seem to like swarming (yes that is apparently the technical term for it)
#bacteria #science #IttyBittyBees


This is why you should never drink cloudy water!

This video shows the bacteria in only about 0.001 ml of water from my jar. At the beginning the focus is on the upper plane, and then I slowly move the focus down into the seething mass. This is terrifying. #horror #science #bacteria #OhMyGodWhatHaveIDone


#Virus control

This exciting new research explores the influence of #virus #infection in changing the balance of organic matter degradation between #bacteria and #eukaryotes in #marine #carboncycling during #phytoplankton blooms.

Based on #mesocosm studies, this research demonstrates how #viruses infecting different #microorganisms change community dynamics and the release and potential fate of marine carbon from primary production.

Learn more in this new research in Nature Communications on:

https://www.nature.com/articles/s41467-023-36049-3

#microbiology #ecology #MicrobialEcology


Rare opportunity to study short-lived volcanic island reveals sulfur-metabolizing #microbes https://phys.org/news/2023-01-rare-opportunity-short-lived-volcanic-island.html

The Early Microbial Colonizers of a Short-Lived Volcanic Island in the Kingdom of #Tonga https://journals.asm.org/doi/10.1128/mbio.03313-22

"We didn't see what we were expecting. We thought we'd see organisms you find when a glacier retreats, or #cyanobacteria, more typical early colonizer speciesβ€”but instead we found a unique group of #bacteria that metabolize sulfur and atmospheric gases."


Content warning: Published Science. Symbiosis in beetles


We're hiring a postdoc to study host-microbe interactions! Our integrative research program studies how the world's most common bacterial endosymbiont has become so successful. Much of it is to do with the bacteria's ability to make its host's sex lives all about them. If you think this sounds interesting, consider applying! Details are here: https://shropshirelab.com/job/postdoctoral-scholar-of-host-microbe-interactions/.
@jobsecoevo #ScienceJobs #PostdocJob #EcoEvo #CellBiology #Genetics #Symbiosis #Bacteria #Insects #Wolbachia #Drosophila


Happy to announce this #preprint , the culmination of last 10 years. πŸ₯³

We find that #antimicrobialpeptides are evolved to control specific #microbiome #bacteria. This example is a textbook case of host #immune #evolution being shaped by the microbiome 🦠 which depends on host #ecology.

Thanks for comments! Bit of an experiment: we are posting pre-submit to get feedback πŸ™‚.

https://www.biorxiv.org/content/10.1101/2022.12.23.521774v2.full
#immunity #Drosophila #EvolutionaryBiology #inflammation #NFkB


I'm still finding my feet here, so it feels right to share with you the first #JournalCover I ever got with my #sciart

I was a #postdoc at the time and I had 1 evening to produce something around the idea that virulence in #bacteria is often 'all about the #phage ... '

A lucky break for me!
#MastoArt #Introduction


#introduction Hello world! πŸ‘‹πŸΌ I’m a community ecologist, scientific illustrator, and educator at Stanford passionate about social justice in STEM. ✊🏼

I study #bacteria and #yeast 🦠 that live in the #nectar of California #wildflowers 🌻.

I also #LiveSketch conference talks, so give me a follow if you want to see beautifully illustrated πŸŽ¨πŸ–ŒοΈ science πŸ§¬πŸ”¬πŸ§ͺ!

πŸ‘‰ See more here: www.calliechappell.com


#introduction
Hi all, I'm an Assistant Professor at the University of Pittsburgh. My lab studies the #evolution of #bacteria, especially what happens to #pathogens before they get into humans. We particularly love host-microbe interactions involving #microeukaryotes like #amoebae and other #protists.

You can learn more on our lab website https://www.teralevinlab.com

I also tend to post nature photos and advice for trainees about navigating science!
#noxp

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