#protists — Public Fediverse posts

@PoLaRobs @shelfyice
May I never stop being amazed at the intersections of geophysical and biological sciences #foramenifera #protists #ice

@PoLaRobs @shelfyice
May I never stop being amazed at the intersections of geophysical and biological sciences #foramenifera #protists #ice

@PoLaRobs @shelfyice
May I never stop being amazed at the intersections of geophysical and biological sciences #foramenifera #protists #ice

@PoLaRobs @shelfyice
May I never stop being amazed at the intersections of geophysical and biological sciences #foramenifera #protists #ice

@PoLaRobs @shelfyice
May I never stop being amazed at the intersections of geophysical and biological sciences #foramenifera #protists #ice

Shelled #amoeba crawls like an octopus, shifting tactics on the go https://phys.org/news/2026-01-shelled-amoeba-octopus-shifting-tactics.html https://www.jstage.jst.go.jp/article/pjab/advpub/0/advpub_pjab.102.001/_html/-char/en

"Commonly found in #peatlands and freshwater environments, #Arcella belongs to a group called testate #amoebae, characterized by having its body enclosed, almost entirely, within a dome-shaped shell... Through an opening on its underside, Arcella can mold its cell body to create finger-like projections called #pseudopodia to capture prey and move around."

#Protists #Microbes

Shelled #amoeba crawls like an octopus, shifting tactics on the go https://phys.org/news/2026-01-shelled-amoeba-octopus-shifting-tactics.html https://www.jstage.jst.go.jp/article/pjab/advpub/0/advpub_pjab.102.001/_html/-char/en

"Commonly found in #peatlands and freshwater environments, #Arcella belongs to a group called testate #amoebae, characterized by having its body enclosed, almost entirely, within a dome-shaped shell... Through an opening on its underside, Arcella can mold its cell body to create finger-like projections called #pseudopodia to capture prey and move around."

#Protists #Microbes

Shelled #amoeba crawls like an octopus, shifting tactics on the go https://phys.org/news/2026-01-shelled-amoeba-octopus-shifting-tactics.html https://www.jstage.jst.go.jp/article/pjab/advpub/0/advpub_pjab.102.001/_html/-char/en

"Commonly found in #peatlands and freshwater environments, #Arcella belongs to a group called testate #amoebae, characterized by having its body enclosed, almost entirely, within a dome-shaped shell... Through an opening on its underside, Arcella can mold its cell body to create finger-like projections called #pseudopodia to capture prey and move around."

#Protists #Microbes

Shelled #amoeba crawls like an octopus, shifting tactics on the go https://phys.org/news/2026-01-shelled-amoeba-octopus-shifting-tactics.html https://www.jstage.jst.go.jp/article/pjab/advpub/0/advpub_pjab.102.001/_html/-char/en

"Commonly found in #peatlands and freshwater environments, #Arcella belongs to a group called testate #amoebae, characterized by having its body enclosed, almost entirely, within a dome-shaped shell... Through an opening on its underside, Arcella can mold its cell body to create finger-like projections called #pseudopodia to capture prey and move around."

#Protists #Microbes

Humanity should not expect to be able to communicate with extraterrestrial life, considering that there are hardly any life forms on Earth that we are able to fully communicate with. How many species of plants, bacteria, archea, or protists can humans fully communicate with?
#aliens #extraterrestrials #firstcontact #language #interspeciescommunication #animals #plants #bacteria #archea #protists #humans #intelligentlife

New paper out:

Florine Degrune et al

The impact of fungi on soil protist communities in European cereal croplands

#soil #fungi #protists #cropland #ecology #agriculture

https://enviromicro-journals.onlinelibrary.wiley.com/doi/full/10.1111/1462-2920.16673

New discovery reveals that ocean #algae unexpectedly help cool the Earth https://phys.org/news/2024-06-discovery-reveals-ocean-algae-unexpectedly.html #protists #microbes

Alternative #dimethylsulfoniopropionate #biosynthesis enzymes in diverse and abundant microorganisms https://www.nature.com/articles/s41564-024-01715-9

"They identified the bloom-forming #Pelagophyceae algae as potentially abundant, important producers of a compound called #DMSP... this is the main source of a #climate active gas called #dimethylsulfide (#DMS), which is known as the smell of the seaside."

🦠 Are tiny gut protists rewriting what we know about “good” and “bad” microbes?

🔗 Structure analysis of human gut microbiota associated with single-celled gut protists using Next-Generation Sequencing of 16S and 18S rRNA genes. Computational and Structural Biotechnology Journal, DOI: https://doi.org/10.1016/j.csbj.2025.06.006

📚 CSBJ: https://www.csbj.org/

#Microbiome #GutHealth #Metagenomics #Protists #Blastocystis #Giardia #NGS #Microbiota #MicrobialEcology #NGS #ComputationalBiology #MolecularBiology

Announcing the release of version 4.14.1 of the PR2 database of 18S eukaryotic reference sequences.

The database itself is unchanged, but we now provide a web interface:

https://app.pr2-database.org

More information: https://pr2database.github.io/pr2database/articles/vignette-shiny-presentation.html

#protists #metabarcoding #database #18S

Announcing the release of version 2.0 of metaPR2, database of 18S eukaryotic metabarcodes

https://shiny.metapr2.org/metapr2/

Major changes are listed here: https://pr2database.github.io/metapr2-shiny/news/index.html

* Addition of 18 new datasets
* Use of clustered metabarcodes (ASVs)
* New panel listing taxonomy of metabarcodes
* Barplots now include samples where taxa are absent

Please report any issue here: https://matrix.to/#/#pr2-database:matrix.org

#protists #metabarcoding #biogeography #18S

I share a databa base of freely reusable silhouettes of life forms to make your phylogenies beautiful!!

#Phylogeny #biology #lifesciences #micology #animals #plants #database #fishes #molusca #algae #protists #dinosaurs #bacteria #Insecta #virus #amphibia #reptilia #mammalia #panarthropoda #Arthropoda #hexapoda #vertebrata #angiosperms #gimnosperms #briophyta #pteridophyta

Link to complete list: https://beta.phylopic.org/images

As #Wildfire Season Approaches, #Phytoplankton Take On Fires’ Trickiest Emissions https://insideclimatenews.org/news/29072024/phytoplankton-wildfire-black-carbon-emissions/

#FireEcology in marine systems https://www.cell.com/trends/ecology-evolution/abstract/S0169-5347(23)00332-4

Microbial marine life can thrive off the black #carbon released from #wildfires and bolster the oceanic carbon sink. Scientists still emphasize their sequestration role has its limits.

#ClimateCrisis #ClimateChange #Algae #Protists #Microbes #ExtremeWeather #Plankton

Of Microscopes and Monsters: Negative Capability https://microscopesandmonsters.wordpress.com/2023/07/29/negative-capability/ #algae #protists #sciart

"#Turner would have looked through a #microscope not with a #scientist’s urge to explain and understand but with an #artist’s capacity to accept that there is much that is still unknown... Modern #ecologists share these emotions, even if their language is different... we can generalise about a situation but still not predict exactly what species we will find, or in what quantities they will occur."

My #Introduction: I'm Beth, a #NewPI and Assistant Professor of #Genetics at Mount Royal University in Calgary. I'm interested in #Bioinformatics, #Genomics, #CellBiology, #Microbiology, #eDNA, #MolecularEcology, #ComparativeGenomics, the #AthabascaOilSands and #Protists. Outside of work, I divide my time between video games, crafting, and being the least outdoorsy person within driving distance of the Canadian Rockies.

Water Availability Creates Global Thresholds In Multidimensional Soil Biodiversity And Functions
--
https://www.nature.com/articles/s41559-023-02071-3 <-- shared paper
--
#GIS #spatial #water #mapping #water #hydrology #biogeography #phylogeography #geography #global #environmental #biodiversity #productivity #agricultural #agriculture #farming #plant #microbe #soilscience #soilhealth #soil #soilfertility #soilconservation #soilmanagement #ecosystems #EnvironmentalThresholds #survey #fieldsurvey #climate #vegetation #watermanagement #waterconservation #rainfall #precipitation #EV #evaporation #evapotranspiration #biogeochemical #geochemical #bacteria #fungi #protists #invertebrates #model #modeling #soilcarbonsequestration #wateravailability #sustainable

Predation of Biofilms by parasitic Amoeba via Digestive Exophagy https://microbiologycommunity.nature.com/posts/predation-of-biofilms-by-parasitic-amoeba-via-digestive-exophagy #protists #microbes

Digestive exophagy of #biofilms by intestinal amoeba and its impact on stress tolerance and #cytotoxicity: Eva Zanditenas et al. https://www.nature.com/articles/s41522-023-00444-x

"#Entamoeba histolytica is a human #parasite responsible for the disease #amoebiasis... The feeding of the parasite on gut #bacteria is crucial for its #virulence."

I share a databa base of freely reusable silhouettes of life forms to make your phylogenies beautiful!!

#Phylogeny #biology #lifesciences #micology #animals #plants #database #fishes #molusca #algae #protists #dinosaurs #bacteria #Insecta #virus #amphibia #reptilia #mammalia #panarthropoda #Arthropoda #hexapoda #vertebrata #angiosperms #gimnosperms #briophyta #pteridophyta

Link to complete list: https://beta.phylopic.org/images

I share a databa base of freely reusable silhouettes of life forms to make your phylogenies beautiful!!

#Phylogeny #biology #lifesciences #micology #animals #plants #database #fishes #molusca #algae #protists #dinosaurs #bacteria #Insecta #virus #amphibia #reptilia #mammalia #panarthropoda #Arthropoda #hexapoda #vertebrata #angiosperms #gimnosperms #briophyta #pteridophyta

Link to complete list: https://beta.phylopic.org/images

I share a databa base of freely reusable silhouettes of life forms to make your phylogenies beautiful!!

#Phylogeny #biology #lifesciences #micology #animals #plants #database #fishes #molusca #algae #protists #dinosaurs #bacteria #Insecta #virus #amphibia #reptilia #mammalia #panarthropoda #Arthropoda #hexapoda #vertebrata #angiosperms #gimnosperms #briophyta #pteridophyta

Link to complete list: https://beta.phylopic.org/images

I share a databa base of freely reusable silhouettes of life forms to make your phylogenies beautiful!!

#Phylogeny #biology #lifesciences #micology #animals #plants #database #fishes #molusca #algae #protists #dinosaurs #bacteria #Insecta #virus #amphibia #reptilia #mammalia #panarthropoda #Arthropoda #hexapoda #vertebrata #angiosperms #gimnosperms #briophyta #pteridophyta

Link to complete list: https://beta.phylopic.org/images

A single cell's siesta: How non-moving #microbes manage to avoid bright light https://phys.org/news/2024-11-cell-siesta-celled-bright.html

Light-regulated #chloroplast morphodynamics in a single-celled dinoflagellate https://www.pnas.org/doi/10.1073/pnas.2411725121

"The structure that allows the chloroplast to make necessary changes was found to be a network of thin filaments. Together, these filaments form a material that can easily contract and expand in all directions."

#Protists #Algae #Organelles #Plastids #Dinoflagellates #Biology #CellBiology

The #Roscoff Culture Collection 🇨🇵 of #marine #microorganisms 🌊 🦠 is seeking a #postdoc to work on ex situ microbiome interactions (EU projects #MICROBE and #BlueRemediomics 🇪🇺).

One objective is to define synthetic #microbiomes to promote the growth of selected #microeukaryotes (#microalgae, saprotrophs) and for optimal production of #metabolites of interest.

https://roscoff-culture-collection.org
https://www.microbeproject.eu
https://blueremediomics.eu
#protists #microbiology #job #bretagne #france

#Plankton evidence reveals a seasonally ice-free ocean during the Last Interglacial https://phys.org/news/2023-08-plankton-evidence-reveals-seasonally-ice-free.html #protists #forams

A seasonally ice-free Arctic Ocean during the Last #Interglacial: Flor Vermassen et al. https://www.nature.com/articles/s41561-023-01227-x

"A subpolar species associated with #Atlantic water expanded far into the #Arctic Ocean during the #LastInterglacial, analysis of #microfossil content of #SedimentCores reveals. This implies that summers in the #Arctic were ice free during this period."

#Phytochromes: The 'eyes' that enable #microalgae to find their way in aquatic depths https://phys.org/news/2024-12-phytochromes-eyes-enable-microalgae-aquatic.html

#Diatom phytochromes integrate the underwater light spectrum to sense depth: Carole Duchêne et al. https://www.nature.com/articles/s41586-024-08301-3

"These photoreceptors enable them to detect changes in the light spectrum in the water column, thereby providing information regarding their vertical position within it."

#Protists #Algae #Diatoms #Microbes #Plankton #Biology #Phytoplankton

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."

#ClimateCrisis: #OceanAcidification in the #Mediterranean is already affecting the #calcification of marine #plankton https://phys.org/news/2023-11-ocean-acidification-mediterranean-affecting-calcification.html paper: https://www.nature.com/articles/s43247-023-00947-7

"#Foraminifera #protists... build a shell, several hundred micrometers in size, which is made of #CalciumCarbonate... these #calcite structures are highly sensitive to changes in seawater #chemistry... This is reflected in an accelerated decrease in shell weight during the 20th century."

How did #eukaryotes evolve for extreme temps? https://www.futurity.org/high-temp-eukaryotes-2972442-2/ #protists

#ExtremeEnvironments offer an unprecedented opportunity to understand #microbial #eukaryotic #ecology, #evolution, and #genome #biology: Hannah Rappaport & Angela Oliverio https://www.nature.com/articles/s41467-023-40657-4

“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 many host proteins do mitochondria-related organelles (MROs), which lack a genome, import? Not many. Here is a super cool paper that uses spatial proteomics to show that the MRO of an oxymonad has only 31 proteins in it! They all seem to be involved in providing small C compounds to the cytosol. (No Fe-S synthesis!) Cool stuff from Vladimír Hampl and colleagues.

https://www.cell.com/current-biology/fulltext/S0960-9822(22)01673-6

#endosymbiosis #organelles #protists #SpatialProteomics #LOPIT #metabolism

A single cell's siesta: How non-moving #microbes manage to avoid bright light https://phys.org/news/2024-11-cell-siesta-celled-bright.html

Light-regulated #chloroplast morphodynamics in a single-celled dinoflagellate https://www.pnas.org/doi/10.1073/pnas.2411725121

"The structure that allows the chloroplast to make necessary changes was found to be a network of thin filaments. Together, these filaments form a material that can easily contract and expand in all directions."

#Protists #Algae #Organelles #Plastids #Dinoflagellates #Biology #CellBiology

A single cell's siesta: How non-moving #microbes manage to avoid bright light https://phys.org/news/2024-11-cell-siesta-celled-bright.html

Light-regulated #chloroplast morphodynamics in a single-celled dinoflagellate https://www.pnas.org/doi/10.1073/pnas.2411725121

"The structure that allows the chloroplast to make necessary changes was found to be a network of thin filaments. Together, these filaments form a material that can easily contract and expand in all directions."

#Protists #Algae #Organelles #Plastids #Dinoflagellates #Biology #CellBiology

A single cell's siesta: How non-moving #microbes manage to avoid bright light https://phys.org/news/2024-11-cell-siesta-celled-bright.html

Light-regulated #chloroplast morphodynamics in a single-celled dinoflagellate https://www.pnas.org/doi/10.1073/pnas.2411725121

"The structure that allows the chloroplast to make necessary changes was found to be a network of thin filaments. Together, these filaments form a material that can easily contract and expand in all directions."

#Protists #Algae #Organelles #Plastids #Dinoflagellates #Biology #CellBiology

A single cell's siesta: How non-moving #microbes manage to avoid bright light https://phys.org/news/2024-11-cell-siesta-celled-bright.html

Light-regulated #chloroplast morphodynamics in a single-celled dinoflagellate https://www.pnas.org/doi/10.1073/pnas.2411725121

"The structure that allows the chloroplast to make necessary changes was found to be a network of thin filaments. Together, these filaments form a material that can easily contract and expand in all directions."

#Protists #Algae #Organelles #Plastids #Dinoflagellates #Biology #CellBiology

Microalgae with unusual cell biology could lead to improved understanding of harmful algal blooms https://phys.org/news/2024-03-microalgae-unusual-cell-biology-algal.html

Conspicuous #chloroplast with light harvesting-#photosystem I/II megacomplex in marine #Prorocentrum cordatum https://academic.oup.com/plphys/advance-article/doi/10.1093/plphys/kiae052/7603414

"the #photosynthesis process in these #microorganisms is organized in an unusual configuration which may help them to better adapt to the changing light conditions in the #oceans."

#algae #protists #microbes

Microalgae with unusual cell biology could lead to improved understanding of harmful algal blooms https://phys.org/news/2024-03-microalgae-unusual-cell-biology-algal.html

Conspicuous #chloroplast with light harvesting-#photosystem I/II megacomplex in marine #Prorocentrum cordatum https://academic.oup.com/plphys/advance-article/doi/10.1093/plphys/kiae052/7603414

"the #photosynthesis process in these #microorganisms is organized in an unusual configuration which may help them to better adapt to the changing light conditions in the #oceans."

#algae #protists #microbes

Microalgae with unusual cell biology could lead to improved understanding of harmful algal blooms https://phys.org/news/2024-03-microalgae-unusual-cell-biology-algal.html

Conspicuous #chloroplast with light harvesting-#photosystem I/II megacomplex in marine #Prorocentrum cordatum https://academic.oup.com/plphys/advance-article/doi/10.1093/plphys/kiae052/7603414

"the #photosynthesis process in these #microorganisms is organized in an unusual configuration which may help them to better adapt to the changing light conditions in the #oceans."

#algae #protists #microbes

Microalgae with unusual cell biology could lead to improved understanding of harmful algal blooms https://phys.org/news/2024-03-microalgae-unusual-cell-biology-algal.html

Conspicuous #chloroplast with light harvesting-#photosystem I/II megacomplex in marine #Prorocentrum cordatum https://academic.oup.com/plphys/advance-article/doi/10.1093/plphys/kiae052/7603414

"the #photosynthesis process in these #microorganisms is organized in an unusual configuration which may help them to better adapt to the changing light conditions in the #oceans."

#algae #protists #microbes

Microalgae with unusual cell biology could lead to improved understanding of harmful algal blooms https://phys.org/news/2024-03-microalgae-unusual-cell-biology-algal.html

Conspicuous #chloroplast with light harvesting-#photosystem I/II megacomplex in marine #Prorocentrum cordatum https://academic.oup.com/plphys/advance-article/doi/10.1093/plphys/kiae052/7603414

"the #photosynthesis process in these #microorganisms is organized in an unusual configuration which may help them to better adapt to the changing light conditions in the #oceans."

#algae #protists #microbes

Giant virus encodes key piece of protein-making machinery of cellular life

"Viruses are integral to the functioning of ocean ecosystems, influencing biological productivity, shifting community interactions, and driving evolutionary change," 

https://phys.org/news/2024-12-giant-virus-encodes-key-piece.html

#viruses #microbiology #GiantViruses #protists

#introduction
Hello everyone!
I’m an associate prof at Virginia Tech studying viral diversity. Lately my group has been focusing on giant viruses, but we are also interested in other protist viruses, and the role of viral endogenization in host genome evolution.
#GiantViruses #ViralDiversity #TreeOfLife #Protists #Microbiology #Bioinformatics #Evolution #Virology #Genomics
Recently we have been examining the strange and complex genes encoded in giant virus genomes!
https://doi.org/10.1093/femsre/fuad053

After 7,000 years without light and oxygen in #BalticSea mud, researchers bring prehistoric #algae back to life https://phys.org/news/2025-03-years-oxygen-baltic-sea-mud.html

Resurrection of a #diatom after 7000 years from anoxic Baltic Sea sediment: Sarah Bolius et al. https://academic.oup.com/ismej/article/19/1/wrae252/7942337

"Such deposits are like a time capsule containing valuable information about past ecosystems and the inhabiting biological communities, their population development and genetic changes"

#Protists #Diatoms #Microbes