#multicellular — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #multicellular, aggregated by home.social.
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Billions of years ago, #life crossed a threshold. Single cells started to band together, and a world of formless, unicellular life was on course to evolve into the riot of shapes and functions of multicellular life today, from ants to pear trees to people.
It's a transition as momentous as any in the history of life, and until recently we had no idea how it happened.
But the momentous transition to #multicellular life may not have been so hard after all.
The evidence comes from multiple directions. The evolutionary histories of some groups of organisms record repeated transitions from single-celled to multicellular forms, suggesting the hurdles could not have been so high.
Genetic comparisons between simple multicellular organisms and their single-celled relatives have revealed that much of the molecular equipment needed for cells to band together and coordinate their activities may have been in place well before multicellularity evolved.
And clever experiments have shown that in the test tube, single-celled life can evolve the beginnings of multicellularity in just a few hundred generations—an evolutionary instant.
#biology #evolution
https://www.science.org/content/article/momentous-transition-multicellular-life-may-not-have-been-so-hard-after-all -
The afternoon of the eighth day of the Konstanz School of Collective Behaviour 2025 (#KSCB2025) is devoted to a #keynote by Naama Brenner on #biophysics of #cells, either in #unicellular or #multicellular #organisms
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#ALTTEXT from #Mushroom #Fungi picture:
"Fungi challenge us to rethink neat categories around the individual, but they are not the only ones. Another boundary-defying organism is the Slime Mold. These unicellular eukaryotic organisms have the astonishing capacity to join and become a complex multicellular organism. Slime Molds will merge and move as a collective which allows them to better respond to their shifting environments, search for food, and have sex. In a world that feels increasingly precarious, there are lessons here. Devin Cohen, one of the Hanky Project artists, writes that for them, Slime Molds reflect the possibilities for queer communities to work collectively, dissemble the refuse of our human world -- capitalism, environmental waste, cis-hetero-patriarchy, racism -- and 'digest it into something life giving, healed, welcoming and weird.' In a country where toxic individualism has wreaked havoc, where mantras like 'pull yourself up by the bootstraps,' are presented as means for 'success,' organisms that choose to come together present a radical and refreshing alternative."
- #Quote from the book:
Exuberant Possibilities : Queer Ecology Hanky ProjectPhoto is of pages 18 and 19 of the book as displayed during the exhibit, Earth Archives. the page is typed in light purple text. the page is illustrated with a blue-green block print of a mushroom centaur holding a crystal staff .. many blue-green block print #honey mushrooms also decorate the page.
#Mold Molds #Alternative #eukaryotic #multicellular #centaur
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#ALTTEXT from #Mushroom #Fungi picture:
"Fungi challenge us to rethink neat categories around the individual, but they are not the only ones. Another boundary-defying organism is the Slime Mold. These unicellular eukaryotic organisms have the astonishing capacity to join and become a complex multicellular organism. Slime Molds will merge and move as a collective which allows them to better respond to their shifting environments, search for food, and have sex. In a world that feels increasingly precarious, there are lessons here. Devin Cohen, one of the Hanky Project artists, writes that for them, Slime Molds reflect the possibilities for queer communities to work collectively, dissemble the refuse of our human world -- capitalism, environmental waste, cis-hetero-patriarchy, racism -- and 'digest it into something life giving, healed, welcoming and weird.' In a country where toxic individualism has wreaked havoc, where mantras like 'pull yourself up by the bootstraps,' are presented as means for 'success,' organisms that choose to come together present a radical and refreshing alternative."
- #Quote from the book:
Exuberant Possibilities : Queer Ecology Hanky ProjectPhoto is of pages 18 and 19 of the book as displayed during the exhibit, Earth Archives. the page is typed in light purple text. the page is illustrated with a blue-green block print of a mushroom centaur holding a crystal staff .. many blue-green block print #honey mushrooms also decorate the page.
#Mold Molds #Alternative #eukaryotic #multicellular #centaur
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Prototaxites represents the first giant organisms to live on the terrestrial surface, reaching sizes of 8 metres in the Early Devonian.
It was an extinct lineage of #multicellular terrestrial #eukaryotes.
Assignments to groups of multicellular algae or land plants have been repeatedly ruled out leaving two major alternatives: #Prototaxites was either a #fungus or a now entirely extinct lineage.
The latter hypothesis seems more plausible based on nrw evidence.
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How did early #multicellular organisms exploit rising O2 levels? By expressing animal O2-binding proteins in snowflake yeast, this study shows that myoglobins & myohemerythrins circumvent anatomical limits to O2 diffusion in multicellular organisms #plosbiology https://plos.io/3Ejt16N
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How do #phages impact #Streptomyces physiology? @BuryMone &co show that induction of the #prophage 'Samy' enhances dispersal of #multicellular aggregates of S. ambofaciens #bacteria in response to stress, likely promoting lineage propagation #PLOSBiology https://plos.io/3LDRNib
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How do #phages impact #Streptomyces physiology? @BuryMone &co show that induction of the #prophage 'Samy' enhances dispersal of #multicellular aggregates of S. ambofaciens #bacteria in response to stress, likely promoting lineage propagation #PLOSBiology https://plos.io/3LDRNib
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How do #phages impact #Streptomyces physiology? @BuryMone &co show that induction of the #prophage 'Samy' enhances dispersal of #multicellular aggregates of S. ambofaciens #bacteria in response to stress, likely promoting lineage propagation #PLOSBiology https://plos.io/3LDRNib
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How do #phages impact #Streptomyces physiology? @BuryMone &co show that induction of the #prophage 'Samy' enhances dispersal of #multicellular aggregates of S. ambofaciens #bacteria in response to stress, likely promoting lineage propagation #PLOSBiology https://plos.io/3LDRNib
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How do #phages impact #Streptomyces physiology? @BuryMone &co show that induction of the #prophage 'Samy' enhances dispersal of #multicellular aggregates of S. ambofaciens #bacteria in response to stress, likely promoting lineage propagation #PLOSBiology https://plos.io/3LDRNib
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Once upon a time, long ago, the world was encased in #ice. Hundreds of millions of years ago, glaciers and sea ice covered the globe. The most extreme scenarios suggest a layer of ice several meters thick even at the equator.
But when seawater gets cold, it gets viscous.
This fact could explain how single-celled ocean creatures became #multicellular when the planet was frozen during “Snowball Earth,” according to experiments.
#evolution #biology https://www.quantamagazine.org/the-physics-of-cold-water-may-have-jump-started-complex-life-20240724/
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.@KaylaStoy & @wc_ratcliff explore a #PLOSBiology study which shows that #multicellular #magnetotactic #bacteria form obligately multicellular consortia of genetically diverse cells with rudimentary division of labor Paper: https://plos.io/460zcGC Primer: https://plos.io/3LnqVD1
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#Multicellular #magnetotactic #bacteria (MMB) have no unicellular stage. @SchaibleGeorge @environmicrobio &co's study of MMB consortia shows that individual cells are not genetically identical & have significant metabolic differentiation #PLOSBiology https://plos.io/460zcGC
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Prokaryotic single-celled organisms, the ancestors of modern-day #bacteria and #archaea, are the most ancient form of #life on our #planet, first appearing roughly 3.5 billion years ago.
The first #eukaryotic cells appeared around 1–1.5 billion years later.
However, eukaryotic cells have since diversified into many complex, #multicellular organisms that we see around us every day—#fungi, #plants and #animals—while prokaryotes have remained decidedly unicellular.
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Prokaryotic single-celled organisms, the ancestors of modern-day #bacteria and #archaea, are the most ancient form of #life on our #planet, first appearing roughly 3.5 billion years ago.
The first #eukaryotic cells appeared around 1–1.5 billion years later.
However, eukaryotic cells have since diversified into many complex, #multicellular organisms that we see around us every day—#fungi, #plants and #animals—while prokaryotes have remained decidedly unicellular.
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Prokaryotic single-celled organisms, the ancestors of modern-day #bacteria and #archaea, are the most ancient form of #life on our #planet, first appearing roughly 3.5 billion years ago.
The first #eukaryotic cells appeared around 1–1.5 billion years later.
However, eukaryotic cells have since diversified into many complex, #multicellular organisms that we see around us every day—#fungi, #plants and #animals—while prokaryotes have remained decidedly unicellular.
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Prokaryotic single-celled organisms, the ancestors of modern-day #bacteria and #archaea, are the most ancient form of #life on our #planet, first appearing roughly 3.5 billion years ago.
The first #eukaryotic cells appeared around 1–1.5 billion years later.
However, eukaryotic cells have since diversified into many complex, #multicellular organisms that we see around us every day—#fungi, #plants and #animals—while prokaryotes have remained decidedly unicellular.
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Prokaryotic single-celled organisms, the ancestors of modern-day #bacteria and #archaea, are the most ancient form of #life on our #planet, first appearing roughly 3.5 billion years ago.
The first #eukaryotic cells appeared around 1–1.5 billion years later.
However, eukaryotic cells have since diversified into many complex, #multicellular organisms that we see around us every day—#fungi, #plants and #animals—while prokaryotes have remained decidedly unicellular.
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New study discovers how altered protein folding drives multicellular evolution https://phys.org/news/2024-03-protein-multicellular-evolution.html
Proteostatic tuning underpins the #evolution of novel #multicellular traits https://www.science.org/doi/10.1126/sciadv.adn2706
"By demonstrating the effect of protein-level changes in facilitating evolutionary change, this work highlights why knowledge of the genetic code in itself does not provide a full understanding of how organisms acquire adaptive behaviors."
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#Fossils show that #eukaryotes first acquired #multicellularity 1.63 billion years ago
https://phys.org/news/2024-01-north-china-fossils-eukaryotes-multicellularity.html1.63-billion-year-old #multicellular eukaryotes from the #Chuanlinggou Formation https://www.science.org/doi/10.1126/sciadv.adk3208
"#Qingshania was most likely #photosynthetic #algae, probably belonging to the extinct stem group of #Archaeplastids (a major group consisting of red algae, green algae and land #plants, as well as #glaucophytes)"
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#Fossils show that #eukaryotes first acquired #multicellularity 1.63 billion years ago
https://phys.org/news/2024-01-north-china-fossils-eukaryotes-multicellularity.html1.63-billion-year-old #multicellular eukaryotes from the #Chuanlinggou Formation https://www.science.org/doi/10.1126/sciadv.adk3208
"#Qingshania was most likely #photosynthetic #algae, probably belonging to the extinct stem group of #Archaeplastids (a major group consisting of red algae, green algae and land #plants, as well as #glaucophytes)"
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#Fossils show that #eukaryotes first acquired #multicellularity 1.63 billion years ago
https://phys.org/news/2024-01-north-china-fossils-eukaryotes-multicellularity.html1.63-billion-year-old #multicellular eukaryotes from the #Chuanlinggou Formation https://www.science.org/doi/10.1126/sciadv.adk3208
"#Qingshania was most likely #photosynthetic #algae, probably belonging to the extinct stem group of #Archaeplastids (a major group consisting of red algae, green algae and land #plants, as well as #glaucophytes)"
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#Fossils show that #eukaryotes first acquired #multicellularity 1.63 billion years ago
https://phys.org/news/2024-01-north-china-fossils-eukaryotes-multicellularity.html1.63-billion-year-old #multicellular eukaryotes from the #Chuanlinggou Formation https://www.science.org/doi/10.1126/sciadv.adk3208
"#Qingshania was most likely #photosynthetic #algae, probably belonging to the extinct stem group of #Archaeplastids (a major group consisting of red algae, green algae and land #plants, as well as #glaucophytes)"
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#Fossils show that #eukaryotes first acquired #multicellularity 1.63 billion years ago
https://phys.org/news/2024-01-north-china-fossils-eukaryotes-multicellularity.html1.63-billion-year-old #multicellular eukaryotes from the #Chuanlinggou Formation https://www.science.org/doi/10.1126/sciadv.adk3208
"#Qingshania was most likely #photosynthetic #algae, probably belonging to the extinct stem group of #Archaeplastids (a major group consisting of red algae, green algae and land #plants, as well as #glaucophytes)"
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New research shows the complexity of #bacterial circadian clocks
https://phys.org/news/2023-08-complexity-bacterial-circadian-clocks.htmlThe #CircadianClock of the #bacterium B. subtilis evokes properties of complex, #multicellular circadian systems https://www.science.org/doi/10.1126/sciadv.adh1308 by Francesca Sartor et al.
"The circadian clock in this #microbe is pervasive: we see it regulating several #genes, and a range of different behaviors."
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Mind-blowing Experiment Evolved Multicellular Life In Just 600 days - YouTube
https://www.youtube.com/watch?v=5_MkchWsfao -
The earliest #animal likely used #chemical signaling to #evolve from a single cell to a #multicellular organism. The findings provide new information about how one of the biggest transitions in the history of life on #earth likely occurred.
#Chemistry #Biology #Microbiology #sflorg
https://www.sflorg.com/2023/04/bio04242302.html -
The #evolution of #multicellular life has played a pivotal role in shaping #biological diversity. However, we have up until now known surprisingly little about the natural #environmental conditions that favor the formation of multicellular groups.
#EarthScience #Biology #Microbiology #sflorg
https://www.sflorg.com/2023/04/es04242301.html -
#FossilAdventCalendar Day 4
The oddest and - at over 560 million years in age - oldest #fossil featured in this #AdventCalendar is Fractofusus misrai from #Newfoundland 🇨🇦. This specimen in the #RoyalOntarioMuseum is from #MistakenPoint, one of the sites preserving the #Ediacaran #biota, the term for some of our planet's oldest #multicellular #fossils. Lots of questions remain about these ancient enigmas, among them, were #Ediacarans #animals or members of a different branch of the tree of life?
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The transition from #unicellular to #multicellular #life was one of a few major events in the history of life that created new opportunities for more complex biological systems to evolve.
According to a study from 2019, experimental populations evolved multicellular structures not observed in unselected control populations.
I was under the impression that multicellularity may have posed an #evolutionary bottleneck. Clearly that is not the case.
#biology #evolution https://www.nature.com/articles/s41598-019-39558-8
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What if we could force a single-cell #organism to evolve in real time into a multicellular life form?
Science fiction? Not quite. Read this fascinating research paper in Nature Scientific Reports by researchers at Georgia Institute of Technology and University of Montana: https://www.nature.com/articles/s41598-019-39558-8
The directed #evolution of a unicellular green alga into a #multicellular #life form took around 750 #asexual generations and was caused by the introduction of a #predator into the #environment.
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#Yellow #pigment keeps #SocialAmoebae together https://www.eurekalert.org/news-releases/968378 #Protists #SlimeMolds #Polyketides #Pigments
Paper: Yellow #polyketide pigment suppresses premature #hatching in social amoeba https://www.pnas.org/doi/10.1073/pnas.2116122119
The #multicellular stage of the #amoeba #Dicyostelium discoideum is partially regulated by an intensely yellow natural substance. The newly identified natural product of the polyketide family prevents the #amoebae #spores from hatching too early.
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#Yellow #pigment keeps #SocialAmoebae together https://www.eurekalert.org/news-releases/968378 #Protists #SlimeMolds #Polyketides #Pigments
Paper: Yellow #polyketide pigment suppresses premature #hatching in social amoeba https://www.pnas.org/doi/10.1073/pnas.2116122119
The #multicellular stage of the #amoeba #Dicyostelium discoideum is partially regulated by an intensely yellow natural substance. The newly identified natural product of the polyketide family prevents the #amoebae #spores from hatching too early.
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#Yellow #pigment keeps #SocialAmoebae together https://www.eurekalert.org/news-releases/968378 #Protists #SlimeMolds #Polyketides #Pigments
Paper: Yellow #polyketide pigment suppresses premature #hatching in social amoeba https://www.pnas.org/doi/10.1073/pnas.2116122119
The #multicellular stage of the #amoeba #Dicyostelium discoideum is partially regulated by an intensely yellow natural substance. The newly identified natural product of the polyketide family prevents the #amoebae #spores from hatching too early.
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#Yellow #pigment keeps #SocialAmoebae together https://www.eurekalert.org/news-releases/968378 #Protists #SlimeMolds #Polyketides #Pigments
Paper: Yellow #polyketide pigment suppresses premature #hatching in social amoeba https://www.pnas.org/doi/10.1073/pnas.2116122119
The #multicellular stage of the #amoeba #Dicyostelium discoideum is partially regulated by an intensely yellow natural substance. The newly identified natural product of the polyketide family prevents the #amoebae #spores from hatching too early.
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Did flooding force bacterial #multicellularity? https://micro-bites.org/2022/11/07/did-flooding-force-bacterial-multicellularity/ #MulticellularBacteria #Bacteria #Microbes #Caves
Paper: Novel multicellular #prokaryote discovered next to an #underground stream https://elifesciences.org/articles/71920
How life went from one cell to #multicellular is a hotly debated topic among #scientists... A #limestone #cave in the northern #Kyushu Island of #Japan was hiding one clue: a fascinating new organism!
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Did flooding force bacterial #multicellularity? https://micro-bites.org/2022/11/07/did-flooding-force-bacterial-multicellularity/ #MulticellularBacteria #Bacteria #Microbes #Caves
Paper: Novel multicellular #prokaryote discovered next to an #underground stream https://elifesciences.org/articles/71920
How life went from one cell to #multicellular is a hotly debated topic among #scientists... A #limestone #cave in the northern #Kyushu Island of #Japan was hiding one clue: a fascinating new organism!
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Did flooding force bacterial #multicellularity? https://micro-bites.org/2022/11/07/did-flooding-force-bacterial-multicellularity/ #MulticellularBacteria #Bacteria #Microbes #Caves
Paper: Novel multicellular #prokaryote discovered next to an #underground stream https://elifesciences.org/articles/71920
How life went from one cell to #multicellular is a hotly debated topic among #scientists... A #limestone #cave in the northern #Kyushu Island of #Japan was hiding one clue: a fascinating new organism!
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Did flooding force bacterial #multicellularity? https://micro-bites.org/2022/11/07/did-flooding-force-bacterial-multicellularity/ #MulticellularBacteria #Bacteria #Microbes #Caves
Paper: Novel multicellular #prokaryote discovered next to an #underground stream https://elifesciences.org/articles/71920
How life went from one cell to #multicellular is a hotly debated topic among #scientists... A #limestone #cave in the northern #Kyushu Island of #Japan was hiding one clue: a fascinating new organism!