A large colonial choanoflagellate from Mono Lake harbors live bacteria

Hake, KH, West, PT, McDonald, K, Laundon, D, Reyes-Rivera, J, Garcia De Las Bayonas, A, Feng, C, Burkhardt, P, Richter, DJ and Banfield, JF 2024 A large colonial choanoflagellate from Mono Lake harbors live bacteria. mBio. https://doi.org/10.1128/mbio.01623-24

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Abstract/Summary

As the closest living relatives of animals, choanoflagellates offer insights into the ancestry of animal cell physiology. Here, we report the isolation and characterization of a colonial choanoflagellate from Mono Lake, California. The choanoflagellate forms large spherical colonies that are an order of magnitude larger than those formed by the closely related choanoflagellate Salpingoeca rosetta. In cultures maintained in the laboratory, the lumen of the spherical colony is filled with a branched network of extracellular matrix and colonized by bacteria, including diverse Gammaproteobacteria and Alphaproteobacteria. We propose to erect Barroeca monosierra gen. nov., sp. nov. Hake, Burkhardt, Richter, and King to accommodate this extremophile choanoflagellate. The physical association between bacteria and B. monosierra in culture presents a new experimental model for investigating interactions among bacteria and eukaryotes. Future work will investigate the nature of these interactions in wild populations and the mechanisms underpinning the colonization of B. monosierra spheres by bacteria

Item Type:	Publication - Article
Additional Keywords:	choanoflagellates, multicellularity, bacteria, Mono Lake, fluorescence in situ hybridization, evolution
Subjects:	Marine Sciences
Divisions:	Marine Biological Association of the UK > Other (MBA)
Depositing User:	Ms Kristina Hixon
Date made live:	12 Sep 2024 11:49
Last Modified:	12 Sep 2024 11:49
URI:	https://plymsea.ac.uk/id/eprint/10285

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