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Items tagged with: evolution
New #ISEPpapers! Updated classification of the phylum Parabasalia https://onlinelibrary.wiley.com/doi/full/10.1111/jeu.13035
"Most are harmless or beneficial gut #symbionts of #animals, but some have turned into #parasites in other body compartments, the most notorious example being #Trichomonas vaginalis in humans."
#protists #microbes #symbiosis #evolution #biology
New #ISEPpapers! Contractile vacuoles: a rapidly expanding (and occasionally diminishing?) understanding https://www.sciencedirect.com/science/article/pii/S0932473924000282 by Kiran More et al.
#protists #microbes #organelles #biology #evolution #algae #parasites
The new study "Into the Blue: Exploring #genetic mechanisms behind the #evolution of #baleenwhales," explores key genetic adaptations of these diverse #whale species around #oceans—giving new insights into risks and opportunities for their survival. The study looks at intriguing mammals—from gigantism of largest blue and fin whales, to diving and migratory abilities of other whales: including humpbacks, minkes & gray.
https://phys.org/news/2024-08-blue-baleen-whales-million-years.html
Into the blue: How baleen whales have adapted over the past 50 million years
The largest dataset of cetacean genes ever collated has helped Flinders University scientists deep dive into the blue to fathom the triumph of baleen whale evolution.phys.org
Evolution of evolvability in rapidly adapting populations
https://www.nature.com/articles/s41559-024-02527-0
Evolution of evolvability in rapidly adapting populations - Nature Ecology & Evolution
Evolvability modifier mutations alter the rates and benefits of future mutations, but it is difficult to predict when they will be favoured by natural selection.Nature
The SplitsTree App: interactive analysis and visualization using phylogenetic trees and networks
https://www.nature.com/articles/s41592-024-02406-3
The SplitsTree App: interactive analysis and visualization using phylogenetic trees and networks - Nature Methods
Nature Methods - The SplitsTree App: interactive analysis and visualization using phylogenetic trees and networksNature
Terrabacteria: redefining bacterial envelope diversity, biogenesis and evolution
https://www.nature.com/articles/s41579-024-01088-0
#microbiology #evolution #science
Terrabacteria: redefining bacterial envelope diversity, biogenesis and evolution - Nature Reviews Microbiology
In this Review, Gribaldo and co-workers explore the diversity and evolution of Terrabacteria and highlight their unique cell envelopes that deviate from Gram-positive and Gram-negative classifications, challenging traditional views on the bacterial c…Nature
https://www.livescience.com/planet-earth/evolution/what-is-the-tree-of-life
#biology #life #evolution #cladistics
What is the 'tree of life'?
The tree of life maps out the relationships between all living things, and it's in constant flux.Emma Bryce (Live Science)
The Last Universal Common Ancestor of Ribosome-Encoding Organisms: Portrait of LUCA
https://link.springer.com/article/10.1007/s00239-024-10186-9
#evolution #microbiology #science #microbes
The Last Universal Common Ancestor of Ribosome-Encoding Organisms: Portrait of LUCA - Journal of Molecular Evolution
The existence of LUCA in the distant past is the logical consequence of the binary mechanism of cell division.SpringerLink
Ancient microbes offer clues to how complex life evolved
https://phys.org/news/2024-07-ancient-microbes-clues-complex-life.html
Ancient microbes offer clues to how complex life evolved
A new study published in Science Advances reveals a surprising twist in the evolutionary history of complex life.Science X (Phys.org)
PhD studentship to characterise aphid immune evolution. Lots to uncover in an insect group with major ecological & economic impact. Aphid systemic immunity is a black box. The interested PhD candidate will both provide one of the first detailed descriptions of aphid immunity, but also uncover principles of immune evolution.
Deadline July 29th at #UoExeter
Email or DM for details🐘 📩
m.hanson@exeter.ac.uk
#Genomics #Aphid #Genetics #Immunity #Evolution #Drosophila
Exciting research from one of my colleagues at #VirginiaTech
A late-Ediacaran crown-group sponge animal
https://www.nature.com/articles/s41586-024-07520-y
A late-Ediacaran crown-group sponge animal - Nature
Cross-hatch impressions from Ediacaran rocks in China are interpreted as having been left by a crown-group sponge fossil, Helicolocellus cantori gen. et sp. nov., characterized by an organic latticework skeleton.Nature
I am very pleased to share with the mastodon community the first part of my PhD work:
High prevalence of Prdm9-independent recombination hotspots in placental #mammals
https://www.biorxiv.org/content/10.1101/2023.11.17.567540v1
This work was done in collaboration with @djivanprentout Alexandre Laverré, Théo Tricou and @duret_lbbe. (1/8)
#Recombination #PopGen #Evolution #gBGC #PRDM9
High prevalence of Prdm9-independent recombination hotspots in placental mammals
In many mammals, recombination events are concentrated into hotspots directed by a sequence specific DNA-binding protein named Prdm9.bioRxiv
Stochasticity, determinism, and contingency shape genome evolution of endosymbiotic bacteria
https://www.nature.com/articles/s41467-024-48784-2
#evolution #microbiology #genomics
Stochasticity, determinism, and contingency shape genome evolution of endosymbiotic bacteria - Nature Communications
Endosymbionts often have small genomes that maintain minimal functions required to serve their hosts. This study examines cases of new endosymbiont acquisition and finds genome degeneration involves both stochastic and deterministic processes that sh…Nature
Primitive purine biosynthesis connects ancient geochemistry to modern metabolism
https://www.nature.com/articles/s41559-024-02361-4
#evolution #OriginOfLife #geochemistry
Primitive purine biosynthesis connects ancient geochemistry to modern metabolism - Nature Ecology & Evolution
Constructing a biosphere-scale model of the evolutionary history of metabolism based on >12,000 biochemical reactions, the authors show that a bottleneck in purine synthesis prevents metabolic expansion from geochemical precursors.Nature
Widespread occurrence and diverse origins of polintoviruses influence lineage-specific genome dynamics in stony corals
https://academic.oup.com/ve/advance-article/doi/10.1093/ve/veae039/7670984
#viruses #coral #evolution #genomics
Widespread occurrence and diverse origins of polintoviruses influence lineage-specific genome dynamics in stony corals
Abstract:. Stony corals (Order Scleractinia) are central to vital marine habitats known as coral reefs. Numerous stressors in the Anthropocene are contribuStephens, Danae (Oxford University Press)
"A retroviral link to vertebrate myelination through retrotransposon-RNA-mediated control of myelin gene expression"
https://www.cell.com/cell/fulltext/S0092-8674(24)00013-8
I have great exaptations for this article
Happy to share the latest manuscript from our lab, in which we propose that eukaryotes evolved from a genomic chimera of Asgard archaea and giant viruses.
https://www.biorxiv.org/content/10.1101/2024.04.22.590592v1
This is a controversial topic, but we believe we have strong evidence to suggest a critical viral role in eukaryogenesis.
#viruses #protists #eukaryotes #evolution #TreeOfLIfe #archaea
Chimeric Origin of Eukaryotes from Asgard Archaea and Ancestral Giant Viruses
The details surrounding the evolution of complex cells remain some of the most enduring mysteries in biology.bioRxiv
Scientists have caught a once-in-a-billion-years evolutionary event in progress, as two lifeforms have merged into one organism that boasts abilities its peers would envy. Last time this happened, Earth got plants. The #algae Braarudosphaera bigelowii has been found to have absorbed a #cyanobacteria called UCYN-A, which may be a huge step forward for #evolution.
https://newatlas.com/biology/life-merger-evolution-symbiosis-organelle/
Two lifeforms merge in once-in-a-billion-years evolutionary event
Scientists have discovered that a once-in-a-billion-years evolutionary event is underway, as two lifeforms have merged into one organism that boasts abilities its peers would envy. Last time this happened, Earth got plants.Michael Irving (New Atlas)
Interested in evolutionary genomics/population genomics and plant genetics? Want to do your PhD in beautiful Stockholm?
We have two 4-year PhD student positions available in my group at Stockholm University. More info, see tanjaslottelab.se
Please repost.
#evolution #genomics #popgen #distyly #CropWildRelatives #PlantGenetics #ecrchat #phd 1/4
Upper Cretaceous. Approximately 100.5 million to 66 million years ago. When alive, this creature lived in warm, shallow seas and had a very short tail, which was fitted with a venomous stinger. Discovered in Haqil, Byblos, Lebanon. It just happens to look like an ancient space alien. #science #fossil #archeology #evolution #photo #nature #biology #wildlife
The Simons Foundation has amazing #postdoc #fellowships for anyone interested in #marine microbial #ecology or #evolution.
I'd love to sponsor anyone interested in viral diversity!
Please spread the word!
Simons Postdoctoral Fellowships in Marine Microbial Ecology | Simons Foundation
The Simons Foundation invites applications for postdoctoral fellowships to support candidates who intend to pursue a career in basic research on fundamental problems in marine microbial ecology, with an emphasis on understanding the role of microorga…Simons Foundation
Looking for some suggestions - I'm working with Archaeal genomic regions whose optimally fitting model seems to be Tamura-Nei (https://doi.org/10.1093/oxfordjournals.molbev.a040023).
Would it be too much to suspect the Archaeal region is under similar types of evolutionary pressure?
#archaea #microbiology #evolution #phylogenetics #bioinformatics
What's a species? How do we define biological diversity - BioAudio
What is a species? A simple question that just about anyone can answer, and yet has been the source of endless debate for decades. Biological diversity just doesn't fit in nice neat little boxes no matter how much we search for a universal s...Buzzsprout
Journal of Systematics and Evolution is on Mastodon (as I just discovered). If you're a plant scientist or just interested in #Botany and #Evolution, give it a follow!
@JSE
Boost to relieve those who live in #Planticipation!
@plantscience
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)
Single-celled #protists in the #guts of #animals thrive without #mitochondria, study finds.
#oxymonads #evolution #phylogenomics
https://phys.org/news/2023-12-single-celled-protists-guts-animals-mitochondria.html
Single-celled protists in the guts of animals thrive without mitochondria, study finds
Almost all eukaryotic organisms, from plants and animals to fungi, can't survive without mitochondria, which generate chemical energy using oxygen.Science X (Phys.org)
Come work with me! My research unit at the University of Namur is hiring a #tenure track position in #ecology and #ecophysiology
I'm happy to answer any questions about working here!
New species concept just dropped ... no, wait, it actually seems useful. Wayne Maddison & Jeannette Whitton published in @SystBiol's #DiamondOA BSSB so it's free to read and free to authors. Even if the concept itself doesn't take off, I think lots of lectures are going to use the figures and ideas.
https://ssbbulletin.org/index.php/bssb/article/view/9358
#Systematics #SpeciesConcepts #Evolution #Conservation #OpenAccess
The Species as a Reproductive Community Emerging From the Past
Biologists and philosophers of science have been unable to fully resolve the decades-long controversy as to what kind of unit of living biodiversity should receive the valued label “species”: reproductive communities (among sexual organisms), genealo…ssbbulletin.org
Happy to share our latest paper, in which we examined the timing at which different microbial groups colonized the ocean!
The first author (Carolina Martinez) is starting her lab at UC Santa Barbara in 2024 and is looking to recruit postdocs and PhD students, so if this looks interesting to you, please reach out to her!
A timeline of bacterial and archaeal diversification in the ocean
https://elifesciences.org/articles/88268
#microbiology #ocean #marine #evolution
A timeline of bacterial and archaeal diversification in the ocean
Phylogenomics reveals the timeline over which marine bacteria and archaea colonized the oceans and shows the geological context of their diversification.Carolina A Martinez-Gutierrez (eLife Sciences Publications, Ltd)
Ongoing shuffling of protein fragments diversifies core viral functions linked to interactions with bacterial hosts
https://www.nature.com/articles/s41467-023-43236-9
#phages #viruses #evolution #genomics
Ongoing shuffling of protein fragments diversifies core viral functions linked to interactions with bacterial hosts - Nature Communications
Proteins are composed of distinct functional domains, each serving a specific role. Here, Smug et al. show that phages are able to shuffle fragments of their proteins and this predominantly occurs in proteins involved in bacterial host interactions.Nature
Postdoctoral Fellow in Phylogenomics/Bioinformatics
#academicjobs #postdocjobs #genomics #evolution #microbiology
https://jobrxiv.org/job/uc-santa-barbara-27778-postdoctoral-fellow-in-phylogenomics-bioinformatics/
Postdoctoral Fellow in Phylogenomics/Bioinformatics
Post a job in 3min, or find thousands of job offers like this one at jobRxiv!jobRxiv