#ISEPpapers 27: April to December 2025

Your twenty-seventh digest of papers and preprints published by members of the International Society for Evolutionary Protistology is here. Do you like your #ISEPpapers as fresh as possible? Follow us on Mastodon or Bluesky. Enjoy!

Morphology and Molecular Phylogeny of Endosymbiotic Ciliates (Peritrichia, Mobilida) of Marine Invertebrates with Descriptions of Two Novel Species Urceolaria clepsydra n. sp. and Urceolaria bratalia n. sp. Gabrielle Martinez, Brian S. Leander, Eunji Park. Read.

An Update on the Morphology and Phylogeny of the Nanoplanktonic Dinoflagellate Prorocentrum nux. Solenn Mordret, Jenna MacKinnon, Susana A. Breglia, Claudio H. Slamovits, Caroline Chénard. Read.

Repeated duplications and losses shaped SMC complex evolution from archaeal ancestors to modern eukaryotes. Jolien J. E. van Hooff, Maximilian W. D. Raas, Eelco C. Tromer, Laura Eme. Read.

New T2T assembly of Cryptosporidium parvum IOWA II annotated with Legacy-Compatible Gene identifiers. Rodrigo de Paula Baptista, Rui Xiao, Yiran Li, Travis C. Glenn & Jessica C. Kissinger. Read.

High Protistan Parasite Occurrence During Fall in a Warm, Low Sea Ice Year in the Eastern Bering Sea. Tanika M. Ladd, Sylvia M. Kim, Eunji Park, Brian S. Leander, María Débora Iglesias-Rodríguez. Read.

Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs. Euki Yazaki, Ryo Harada, Ryu Isogai, Kohei Bamba, Ken-ichiro Ishida, Yuji Inagaki, Takashi Shiratori. Read. SciComm: Rediscovery of the Protist Glissandra: Elucidating the Common Features of the Uncharacterized CRuMs Lineage. Read.

Eukaryote-Wide Distribution of a Family of Longin Domain-Containing GAP Complexes for Small GTPases. Anna M. G. Novák Vanclová, Catherine L. Jackson, Joel B. Dacks. Read.

The fluid dynamics and functional diversity of the flagella of free-living flagellates. Thomas Kiørboe, Sei Suzuki, Alastair Simpson. Read.

Selective loss of ATP carriers in favour of SLC25A43 orthologues in metamonad mitochondria adapted to anaerobiosis. Natalia Janowicz, Vít Dohnálek, Justyna Zítek, Priscila Peña-Diaz, Eva Pyrihová, et al. Read.

Modeling site-and-branch-heterogeneity with GFmix. Charley G. P. McCarthy, Edward Susko, Andrew J. Roger. Read.

Regulated development of cannibalistic supergiant cells. Ben T. Larson, Daniele Giannotti, Mahara Mtawali, Samuel J. Lord, Vittorio Boscaro, Patrick J. Keeling. Read.

Towards a trait-based framework for protist ecology and evolution. Mahwash Jamy, Pierre Ramond, David Bass, Javier del Campo, Micah Dunthorn, Enrique Lara, Aditee Mitra, Daniel Vaulot, Luciana Santoferrara. Read.

Rare microbial relict sheds light on an ancient eukaryotic supergroup. Marek Valt, Tomáš Pánek, Seda Mirzoyan, Alexander K. Tice, Robert E. Jones, Vít Dohnálek, Pavel Doležal, Jiří Mikšátko, Johana Rotterová, Pavla Hrubá, Matthew W. Brown & Ivan Čepička. Read. SciComm: Discovery of a rare protist reveals a previously unknown branch of the eukaryotic tree of life. Read.

Natural and artificial variations of the standard genetic code. Julius Lukeš, Marek Eliáš, Ambar Kachale, Peter T. S. van der Gulik, Dave Speijer. Read.

Tepsin and AP4 mediate transport from the trans-Golgi to the plant-like vacuole in toxoplasma. Janessa Grech, Abhishek Prakash Shinde, Javier Periz, Mirko Singer, Simon Gras, Ignasi Forné, Andreas Klingl, Joel B. Dacks, Elena Jiménez-Ruiz, Markus Meissner. Read.

Pangenome biology and evolution in harmful algal-bloom-forming pelagophytes. Shannon J. Sibbald, Maggie Lawton, Charlotte Maclean, Andrew J. Roger, John M. Archibald. Read.

Nuclear genome sequencing reveals the highly intron-rich architecture of the chlorarachniophyte alga Amorphochlora amoebiformis. Daichi Aoki, Honoka Saiki, Kenta Yamamoto, Shigekatsu Suzuki, Yoshihisa Hirakawa. Read.

Eukaryotic Recombinases Duplicated After Divergence From Known Asgard Archaeal RadA: Implications for the Evolution of Sex During Eukaryogenesis. Lisa Matsuo, Anna M. G. Novák Vanclová, Andrew Pomiankowski, Nick Lane, Joel B. Dacks. Read.

Endogenized polinton-like viruses in the dinoflagellate Oxyrrhis marina uncover novel PolB fusion. Ronie Haro, Lucie Gallot-Lavallée, John M. Archibald, Claudio H. Slamovits. Read.