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Items tagged with: eukaryotes

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.

biorxiv.org/content/10.1101/20…

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
#Evolution #protists #viruses #eukaryotes #archaea #TreeOfLife

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The #symbioses that gave rise to primary #organelles are key events in the origin of #Eukaryotes. @PierreSGarcia @FredBarras & @SGribaldo use markers from 2 conserved machineries for [Fe-S] cluster biogenesis to support an early emergence of #mitochondria & #plastids within #Alphaproteobacteria & #Cyanobacteria #PLOSBiology plos.io/3FNP5E5

Components of iron–Sulfur cluster assembly machineries are robust phylogenetic markers to trace the origin of mitochondria and plastids

The symbioses that gave rise to primary organelles are key events in the origin of Eukaryotes. This study uses a dataset of markers belonging to two conserved machineries responsible for [Fe-S] cluster biogenesis to support an early emergence of mito…
plos.io
#plosbiology #mitochondria #cyanobacteria #eukaryotes #organelles #alphaproteobacteria #plastids #symbioses

Highlight: Unlocking the Ancient Origins of Cell Death

doi.org/10.1093/gbe/evad172

"They propose that early protoeukaryotes were predators, relying on bacterial prey. These bacteria, in response to predation, produced toxins as a defense mechanism. Over time, these bacteria were domesticated to serve as mitochondria within eukaryotic cells, and their toxins evolved into apoptotic factors. "

#evolution #eukaryotes #apoptosis #mitochondria

#Evolution #mitochondria #eukaryotes #apoptosis

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How did #eukaryotes evolve for extreme temps? futurity.org/high-temp-eukaryo… #protists

#ExtremeEnvironments offer an unprecedented opportunity to understand #microbial #eukaryotic #ecology, #evolution, and #genome #biology: Hannah Rappaport & Angela Oliverio nature.com/articles/s41467-023…

“several lineages of #amoebae were often recovered from extremely high temperature environments. Studying those lineages may yield great insight into how eukaryotic cells can adapt to life in extremely hot environments.”

How did eukaryotes evolve for extreme temps? - Futurity

Researchers are investigating microbial eukaryotic life in extreme environments, like Lassen National Park's geothermal lake.
Dan Bernardi-Syracuse (Futurity)
#ecology #Evolution #biology #amoebae #protists #genome #eukaryotes #eukaryotic #microbial #extremeenvironments

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.

biorxiv.org/content/10.1101/20…

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
#bacteria #phage #eukaryotes

#Evolution #protists #mitochondria #eukaryotes #Anaerobes

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#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:

nature.com/articles/s41467-023…

#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
#ecology #Virus #bacteria #microbiology #infection #viruses #marine #phytoplankton #eukaryotes #carboncycling #mesocosm #MicroOrganisms #MicrobialEcology

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