Search
Items tagged with: bacteria
Weekend #Plankton #Factoid 🦠🦐
Research on how bacteria and archaea interact with other members of the plankton food-web is much more advanced in #ocean systems compared to freshwaters, but still very much unknown. They are food, but we also know of many cases of apparent symbiosis between #bacteria and organisms, with bacteria providing bioluminescence, energy via photosynthesis, or B vitamins, but how common is this? Read about the mission here. #science #ClimateChange
The plankton paradox: Unprecedented cooperationbetween bacteria in the Ocean
A team of CNRS researchers, led by Dr. Samuel Chaffron, developed a model based on data fromthe Tara Oceans expedition (2009-2013) to explain the plankton paradox: Ocean microorganismsof astonishing diversity should be competing, but instead collabor…deborah (Fondation Tara Océan)
#Microbes used poison gas in battle for iron in the Earth's early oceans https://phys.org/news/2024-10-microbes-poison-gas-iron-earth.html
Inhibition of phototrophic iron oxidation by nitric oxide in ferruginous environments: Verena Nikeleit et al. https://www.nature.com/articles/s41561-024-01560-9
"A new study investigates how various #bacteria excrete insoluble iron as part of their metabolic processes. Some—the phototrophic iron oxidizers—gain energy by oxidizing Fe with the help of sunlight, and others by reacting Fe with nitrate as an oxidizing agent."
Some microbes used poison gas in battle for iron in the Earth's early oceans, geomicrobiologists find
Early in the Earth's development, the atmosphere contained no oxygen. Yet the iron dissolved in the oceans was oxidized in gigantic quantities and deposited as rock. It can be seen today, for example, as banded iron ore in South Africa.University of Tübingen (Phys.org)
Do you know MediaDive, the world’s largest collection of cultivation media for microorganisms 🧫? It contains detailed introductions how to prepare the medium you need for your strain. In addition to the provision of all media used at the DSMZ, you can also create your own media or search for a medium suitable for your strain. Give it a try 😉
https://mediadive.dsmz.de/
#database #microbiology #research #DSMZDigitalDiversity #bacteria #fungi
MediaDive — the cultivation media database
Discover standardized cultivation media recipes for more than 40,000 microbial strains.mediadive.dsmz.de
Genomic analyses of Symbiomonas scintillans show no evidence for endosymbiotic bacteria but does reveal the presence of giant viruses
Author summary Endosymbiotic bacteria are found in a wide variety of hosts across the tree of eukaryotes and have been proposed to be evolutionarily and ecologically significant, but in most cases, we know little to nothing about them.journals.plos.org
New #ISEPpapers #preprint! Comprehensive analysis of the microbial consortium in the culture of flagellate #Monocercomonoides exilis https://www.biorxiv.org/content/10.1101/2024.02.02.578639v2 #protists #microbes #mitochondria #bacteria #biorxiv @biorxivpreprint
"Monocercomonoides exilis is the only known amitochondriate eukaryote, making it an excellent model for studying the implications of mitochondrial reduction from a cellular and evolutionary point of view."
Comprehensive analysis of the microbial consortium in the culture of flagellate Monocercomonoides exilis
Monocercomonoides exilis is the only known amitochondriate eukaryote, making it an excellent model for studying the implications of mitochondrial reduction from a cellular and evolutionary point of view. Although M.bioRxiv
Mesmerising microbes: bacteria as you’ve never seen it before – in pictures
“As a side hustle he manipulates and photographs the microbial world; his images are collected in a book, Beautiful Bacteria. Taking bacteria from substances such as wastewater, dental plaque or kimchi, Danino lets them multiply in a petri dish, adding dyes. The results are artworks differing from the digital enhancements often made in scientific photography to make images more informative.”
#News #Photography #Photo #Photos #Image #Images #Microbiology #Biology #Science #STEM #Bacteria #Microbes #Microbes @science @biology @microbiology
Mesmerising microbes: bacteria as you’ve never seen it before – in pictures
Scientist Tal Danino’s incredible images of the microbial worldThe Guardian
Evolution is not as random as previously thought, finds new study
A new study has found that evolution is not as unpredictable as previously thought, which could allow scientists to explore which genes could be useful to tackle real-world issues such as antibiotic resistance, disease, and climate change.Science X (Phys.org)
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
Phages overcome bacterial immunity via diverse anti-defence proteins - Nature
Nature - Phages overcome bacterial immunity via diverse anti-defence proteinsNature
🎉 New preprint from the (MDM) lab:
🔗 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
Predicting phage-bacteria interactions at the strain level from genomes
Predicting how phages can selectively infect specific bacterial strains holds promise for developing novel approaches to combat bacterial infections and better understanding microbial ecology.bioRxiv
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
‘Oceans are hugely complex’: modelling marine microbes is key to climate forecasts
Microorganisms are the engines that drive most marine processes. Ocean modelling must evolve to take their biological complexity into account.Tagliabue, Alessandro
#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
Microbial Cities and New Worlds
Tim Hayward enters the bacterial jungle and discovers a whole new world of possibilities.BBC
Encyclopaedia of DNA polymerases localized in organelles: Evolutionary contribution of diverse bacteria including the proto-mitochondrion
DNA polymerases (DNAPs) synthesize DNA from deoxyribonucleotides in a semi-conservative manner and serve as the core of DNA replication and repair machineries.bioRxiv
Transient eco-evolutionary dynamics early in a phage epidemic have strong and lasting impact on the long-term evolution of bacterial defences
Organisms use a range of defence systems to protect against their parasites. Using a bacteria-phage model system, we investigate what drives the transient evolution of different systems, which has important implications for host ecology and pathogeni…plos.io
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
An evolutionary timescale for Bacteria calibrated using the Great Oxidation Event
Most of life's diversity and history is microbial but it has left a meagre fossil record, greatly hindering understanding of evolution in deep time.bioRxiv
A patchwork pathway of apparently recent origin enables degradation of the synthetic buffer compound TRIS in bacteria
The widely used synthetic chemical 2-amino-2-hydroxymethyl-propane-1,3-diol (TRIS) was long considered to be biologically inert. Herein, we describe a complete degradation pathway for the catabolism of TRIS in bacteria.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 
#bwob
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
Fight not flight: parasites drive the bacterial evolution of resistance, not avoidance
In the face of ubiquitous threats from parasites, hosts often evolve strategies to resist infection or to altogether avoid contact with parasites. At the microbial scale, bacteria frequently encounter viral parasites, bacteriophages.bioRxiv
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
The Promise and Pitfalls of Prophages
Phages dominate every ecosystem on the planet. While virulent phages sculpt the microbiome by killing their bacterial hosts, temperate phages provide unique growth advantages to their hosts through lysogenic conversion.bioRxiv
"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
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
Programmed ribosomal frameshifts, and how to find them
One of the stranger phenomena that can occur during gene translation is where, as a ribosome reads along the mRNA, various cellular and molecular properties contribute to stalling the ribosome on a slippery sequence, shifting the ribosome into one of…bioRxiv
https://www.nature.com/articles/s41564-022-01318-2
#phage #bacteria #crispr
Restriction endonuclease cleavage of phage DNA enables resuscitation from Cas13-induced bacterial dormancy - Nature Microbiology
Deployment of some CRISPR-Cas systems stunts host growth by degrading all transcripts, but Listeria seeligeri reverses dormancy using restriction-modification-based phage DNA targeting.Nature
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
Molecular hydrogen in seawater supports growth of diverse marine bacteria - Nature Microbiology
Genome-resolved metagenomics, biogeochemistry, modelling and culture-based analysis reveal that marine bacteria consume H2 to support growth.Nature
New research in Nature Communications on: https://www.nature.com/articles/s41467-023-36349-8
#microbiology #HorizontalGeneTransfer #evolution
Archaeal DNA-import apparatus is homologous to bacterial conjugation machinery - Nature Communications
Bacteria can exchange DNA through extracellular appendages (‘mating pili’) in a process known as conjugation. Here, Beltran et al.Nature
#bacteria #science #IttyBittyBees
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
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
Viral infection switches the balance between bacterial and eukaryotic recyclers of organic matter during coccolithophore blooms - Nature Communications
Algal blooms are hotspots of marine primary production that play central roles in microbial ecology and global elemental cycling.Nature
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 species—but instead we found a unique group of #bacteria that metabolize sulfur and atmospheric gases."
Rare opportunity to study short-lived volcanic island reveals sulfur-metabolizing microbes
In 2015, a submarine volcano in the South Pacific erupted, forming the Hunga Tonga Hunga Ha'apai island, destined to a short, seven-year life.Science X (Phys.org)
@jobsecoevo #ScienceJobs #PostdocJob #EcoEvo #CellBiology #Genetics #Symbiosis #Bacteria #Insects #Wolbachia #Drosophila
Postdoctoral Scholar of Host-Microbe Interactions
The Shropshire Lab (Lehigh University, Pennsylvania) is seeking a highly motivated Postdoctoral researcher to study host-microbe interactions.https://shropshirelab.com/author/j-dylan-shropshireprotonmail-com/#author (My WordPress)
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 🙂.
https://www.biorxiv.org/content/10.1101/2022.12.23.521774v2.full
#immunity #Drosophila #EvolutionaryBiology #inflammation #NFkB
Single innate immune effectors control ecological microbiome bacteria across evolutionary timescales
Antimicrobial peptides are host-encoded antibiotics that combat invading microbes and help shape the microbiome in plants and animals.bioRxiv
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
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 🎨🖌️ science 🧬🔬🧪!
👉 See more here: www.calliechappell.com
