qurlyjoeNov 26
This is pretty cool. Not often somebody gets to announce the discovery of a whole new branch of life. The cells contain mitochondria unlike any known before. Features support the #endosymbiont theory of #mitochondria origins, that they were originally separate animals but one got swallowed by something else but didn’t die. Instead lived and we’re all descended from that pair, a dom & a sub?🤷🏽 #science
https://www.sciencealert.com/newly-discovered-organism-could-represent-a-whole-new-branch-in-the-tree-of-life
Newly Discovered Organism Could Represent a Whole New Branch in The Tree of Life

It's not every day that biologists announce an entirely new branch of life, and this one has been hiding under their noses for years.

ScienceAlert
Lukas VFN 🇪🇺Dec 10, 2024

Scientists discover more #mitochondria-like #symbionts with surprising metabolic capacities https://phys.org/news/2024-12-scientists-mitochondria-symbionts-metabolic-capacities.html

Genetic potential for aerobic respiration and #denitrification in globally distributed respiratory #endosymbionts https://www.nature.com/articles/s41467-024-54047-x

"They found a unique #bacterium that lives inside a ciliate (#protists) and provides it with energy... reminiscent of #mitochondria, with the key difference that the #endosymbiont derives energy from the respiration of nitrate, not oxygen."

Scientists discover more mitochondria-like symbionts with surprising metabolic capacities

In 2021, scientists at the Max Planck Institute for Marine Microbiology in Bremen, Germany, reported an astonishing new form of symbiosis: They found a unique bacterium that lives inside a ciliate—a unicellular eukaryote—and provides it with energy. The symbiont's role is thus strongly reminiscent of mitochondria, with the key difference that the endosymbiont derives energy from the respiration of nitrate, not oxygen.

Phys.org
Oleksandr MaistrenkoNov 14, 2024
In our study “Wolbachia in Antarctic terrestrial invertebrates: Absent or undiscovered?” https://doi.org/10.1111/1758-2229.70040 we summarise the diversity of terrestrial #invertebrates and discuss why #Wolbachia - the common #endosymbiont of invertebrates was not found in #Antarctica. Literature and in silico search did not show the presence of Wolbachia in samples collected in Antarctica. Samples of species which are prevalent in Antarctica but collected on other continents can be infected with Wolbachia.
ISEPAug 5, 2024
New #ISEPpapers! Single-cell #genomics revealed Candidatus Grellia alia sp. nov. as an #endosymbiont of #Eutreptiella sp. (Euglenophyceae) https://www.sciencedirect.com/science/article/pii/S1434461024000105 #protists #algae #bacteria #symbiosis #microbes by Metody Hollender et al.
Single-cell genomics revealed Candidatus Grellia alia sp. nov. as an endosymbiont of Eutreptiella sp. (Euglenophyceae)

Though endosymbioses between protists and prokaryotes are widespread, certain host lineages have received disproportionate attention what may indicate…

scinexx - das wissensmagazinApr 15, 2024
Von der Symbiose zum Organell: In einer Meeresalge ist ein bakterieller Symbiosepartner dabei, sich in ein neuartiges Zellorganell zu verwandeln, das Stickstoff fixierern kann. #Organell #Endosymbiose #Endosymbiont #Stickstoff #Evolution
https://www.scinexx.de/news/biowissen/erstes-stickstoff-speicherndes-organell-entdeckt/
Erster Organismus mit Stickstoff-Organell

Von der Symbiose zum Organell: In einer Meeresalge ist ein bakterieller Symbiosepartner dabei, sich in ein neuartiges Zellorganell zu verwandeln. Dank

scinexx | Das Wissensmagazin
Marie WaldeApr 13, 2024

Very interesting story about the #nitroplast, a potential new organelle resulting from #symbiosis between nitrogen-fixing bacteria and the #microalgae *Braarudosphaera bigelowii* based on subcellular imaging and proteomic data.
Possibly a new model to study the evolutionary transition from #endosymbiont to organelle.
https://www.science.org/doi/10.1126/science.adk1075

With a Perspective comment by Ramon Massana
https://www.science.org/doi/10.1126/science.ado8571
#evolution #protists

PLOS BiologyMar 31, 2023
.@aquabolina & @TheLadybirdman explore a #PLOSBiology study of a novel male-killer #endosymbiont hidden by co-infection & host resistance, highlighting complexity of host-microbe interactions in natural systems. Primer: https://plos.io/3ziNMtx Paper: https://plos.io/3TEicQe
One strain may hide another: Cryptic male-killing Wolbachia

While heritable symbionts are common in insects, strains that act as male-killers are considered rare. This Primer explores a new study in PLOS Biology which reveals a novel male-killer hidden by co-infection and host resistance, highlighting the complexity of host-microbial interactions in natural systems.

PLOS BiologyMar 31, 2023
.@aquabolina & @TheLadybirdman explore a #PLOSBiology study of a novel male-killer #endosymbiont hidden by co-infection & host resistance, highlighting complexity of host-microbe interactions in natural systems. Primer: https://plos.io/3ziNMtx Paper: https://plos.io/3TEicQe
One strain may hide another: Cryptic male-killing Wolbachia

While heritable symbionts are common in insects, strains that act as male-killers are considered rare. This Primer explores a new study in PLOS Biology which reveals a novel male-killer hidden by co-infection and host resistance, highlighting the complexity of host-microbial interactions in natural systems.

PLOS BiologyMar 31, 2023
.@aquabolina & @TheLadybirdman explore a #PLOSBiology study of a novel male-killer #endosymbiont hidden by co-infection & host resistance, highlighting complexity of host-microbe interactions in natural systems. Primer: https://plos.io/3ziNMtx Paper: https://plos.io/3TEicQe
One strain may hide another: Cryptic male-killing Wolbachia

While heritable symbionts are common in insects, strains that act as male-killers are considered rare. This Primer explores a new study in PLOS Biology which reveals a novel male-killer hidden by co-infection and host resistance, highlighting the complexity of host-microbial interactions in natural systems.

Alejandro Manzano MarínMar 29, 2023

Latest on #leech #symbionts!

Evolution of an alternative genetic code in a leech #endosymbiont

https://doi.org/10.1101/2023.03.27.534433

Great collaboration with friends and colleagues @Alejand27087755 & @sebastian_kvist 1/4

@DOME_Vienna @ib_unam @ROMtoronto @eebtoronto @naturhistoriska