New #ISEPpapers! Morphology and Molecular Phylogeny of Endosymbiotic #Ciliates (Peritrichia, Mobilida) of Marine #Invertebrates with Descriptions of Two #NewSpecies Urceolaria clepsydra n. sp. and Urceolaria bratalia n. sp. https://onlinelibrary.wiley.com/doi/10.1111/jeu.70003
ISEP
The International Society for Evolutionary Protistology Serves People with Interests in the Taxonomy, Phylogeny, Cell Biology, and Evolution of Protists.
#ISEPpapers 26: October 2024 to March 2025 https://www.isep-protists.com/post/iseppapers-26
Your twenty-sixth digest of papers and preprints published by members of the International Society for Evolutionary Protistology is here!
#Protists #Algae #Microbes #Evolution #Bacteria #Archaea #Symbiosis #Parasites #TreeOfLife
New #ISEPpaper! On the possibility of yet a third #kinetochore system in the protist phylum Euglenozoa https://journals.asm.org/doi/full/10.1128/mbio.02936-24 by Corinna Benz et al.
"While #kinetoplastids have an unconventional kinetochore system and #euglenids have a canonical one similar to traditional model #eukaryotes, preliminary searches detected neither unconventional nor canonical kinetochore components in #diplonemids."
New #ISEPpapers #prerint! Drastic genome reduction driven by parasitic lifestyle: Two complete genomes of endosymbiotic bacteria possibly hosted by a dinoflagellate https://www.biorxiv.org/content/10.1101/2025.01.03.631278v1.abstract
New #ISEPpaper! Where Is Cryptosporidium Population #Genomics Going Next: The Challenge and the Promise https://link.springer.com/chapter/10.1007/978-3-031-70591-5_7
"Forty years have passed since species of #Cryptosporidium, single-cellular protozoan #parasites were first recognized as significant human pathogens"
New #ISEPpapers! Characterization of Allobodo yubaba sp. nov. and Novijibodo darinka gen. et sp. nov., cultivable free‐living species of the phylogenetically enigmatic kinetoplastid taxon Allobodonidae https://pmc.ncbi.nlm.nih.gov/articles/PMC11771631/ by Julia Packer et al.
"#Kinetoplastids are a large and diverse #protist group, spanning ecologically important free‐living forms to medically important #parasites."
New #ISEPpapers! Phylogenomic resolution of marine to freshwater dinoflagellate transitions https://academic.oup.com/ismej/article/19/1/wraf031/8029727 by Mahara Mtawali et al.
New #ISEPpapers! Diplonemid #protists possess exotic endomembrane machinery, impacting models of membrane trafficking in modern and ancient eukaryotes https://www.sciencedirect.com/science/article/abs/pii/S0960982225001952 by Kristína Záhonová et al., @DacksLabECB
"Heterotrophic protists possess machinery sporadically present in model organisms... LECA likely was a homogenous population with complex cell biology... General cell biological frameworks should integrate data from diverse eukaryotes"
New #ISEPpapers! Hijacking and integration of algal #plastids and #mitochondria in a polar planktonic host: Ananya Kedige Rao et al. https://www.cell.com/current-biology/fulltext/S0960-9822(25)00392-6
"Hosts steal active plastids, mitochondria, and nuclei from the microalga #Phaeocystis... Stolen plastids increase in volume, and their photosynthetic activity is boosted... Stolen mitochondria transform into a network in close association with plastids"
New #ISEPpapers! Comparative Analysis of #Protist Communities in #Oilsands Tailings Using Amplicon Sequencing and #Metagenomics: Kristína Záhonová et al. https://enviromicro-journals.onlinelibrary.wiley.com/doi/full/10.1111/1462-2920.70029
New #ISEPpapers! An expanded phylogenomic analysis of #Heterolobosea reveals the deep relationships, non-canonical genetic codes, and cryptic flagellate stages in the group https://www.sciencedirect.com/science/article/abs/pii/S1055790325000065
"The first broadly-sampled phylogenomic analyses of the phylum Heterolobosea... The first two cases of genetic code alterations in Heterolobosea... Evidence for cryptic #flagellates in #Acrasidae and loss of flagella in #Neovahlkampfia."
New #ISEPpapers! How marine are Marine #Stramenopiles (MAST)? A cross-system evaluation https://academic.oup.com/femsec/article/100/11/fiae130/7815208
"MAST comprise several independent lineages at the base of the #Stramenopiles. Despite their prevalence in the #ocean, the majority of MAST diversity remains uncultured."
New #ISEPpapers! Long-read DNA sequencing reveals the organization of the mitochondrial #genome in the early-branching dinoflagellate #Oxyrrhis marina https://www.sciencedirect.com/science/article/pii/S1434461024000634
New #ISEPpapers! Reduced plastid #genomes of colorless facultative pathogens Prototheca (#Chlorophyta) & retained for membrane transport genes https://bmcbiol.biomedcentral.com/articles/10.1186/s12915-024-02089-4
"relatives of model #algae #Chlorella include two secondarily non-photosynthetic genera – #Helicosporidium (gut #parasites of #insects) and #Prototheca, which are predominantly free-living opportunistic #pathogens of diverse vertebrates, including humans"
New #ISEPpapers! The nature of ‘jaws’: a new predatory representative of #Provora and the ultrastructure of nibbling protists https://royalsocietypublishing.org/doi/10.1098/rsob.240158
"we identified four main microtubular roots... which support the strong feeding apparatus resembling jaws... We also describe a new species, Nibbleromonas piranha sp. nov., and highlight features of its feeding behaviour, which can be so aggressive as to result in cannibalism."
It's time to consider the Arcellinida shell as a weapon https://www.isep-protists.com/post/arcellinida-shell-weapon #ISEPpapers by Kenneth Dumack et al.: https://www.sciencedirect.com/science/article/pii/S0932473924000014
"why there is such a large morphological diversity in shell-bearing #amoebae and what is the function of shells anyway? It was long assumed shells are for defense, well let me try to convince you that their purpose is attack"
#protists #microbes #biology #predators #fungi #algae #diatoms #microscopy
New #ISEPpapers! Expanded gene and taxon sampling of #diplomonads shows multiple switches to parasitic and free-living lifestyle: Monika Wiśniewska et al. https://bmcbiol.biomedcentral.com/articles/10.1186/s12915-024-02013-w
New #ISEPpapers! Evolutionary origins of the lysosome-related organelle sorting machinery reveal ancient homology in post-endosome trafficking pathways: Kiran More et al. https://www.pnas.org/doi/10.1073/pnas.2403601121
#protists #microbes #CellBiology #eukaryogenesis #biology #organelles
New #ISEPpapers! Adaptations and metabolic #evolution of myzozoan #protists across diverse lifestyles and environments https://journals.asm.org/doi/abs/10.1128/mmbr.00197-22
New #ISEPpapers! Hidden syndinian and perkinsid infections in dinoflagellate hosts revealed by single-cell transcriptomics https://academic.oup.com/ismej/article/18/1/wrae188/7777698 by Elizabeth Cooney et al.
#protists #algae #symbiosis #microbes #plankton #evolution #biology
Client Info
Server: https://mastodon.social
Version: 2025.04
Repository: https://github.com/cyevgeniy/lmst