Widespread formation of intracellular calcium carbonates by the bloom‐forming cyanobacterium Microcystis

Autor: Juliette Gaëtan, Sébastien Halary, Maxime Millet, Cécile Bernard, Charlotte Duval, Sahima Hamlaoui, Amandine Hecquet, Muriel Gugger, Benjamin Marie, Neha Mehta, David Moreira, Fériel Skouri‐Panet, Cynthia Travert, Elodie Duprat, Julie Leloup, Karim Benzerara
Přispěvatelé: Biominéralogie : histoire, mécanismes et applications [IMPMC] (IMPMC_BIOMIN), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris ), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Molécules de Communication et Adaptation des Micro-organismes (MCAM), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Cosmochimie [IMPMC] (IMPMC_COSMO), Collection des Cyanobactéries, Institut Pasteur [Paris] (IP)-Université Paris Cité (UPCité), Ecologie Systématique et Evolution (ESE), AgroParisTech-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Bioinformatique et BioPhysique [IMPMC] (IMPMC_BIBIP), ATM MNHN BIOCHEMIST, Emergence CaCO3 project of Sorbonne University, Learning Planet Institute and University Paris Cité grant Frontiers of Innovation in Research and Education., ANR-19-CE01-0005,PHOSTORE,Piégeage du phosphore : contribution des bactéries magnétotactiques dans les zones de transition oxique-anoxique(2019), Institut Pasteur [Paris] (IP)
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Environmental Microbiology
Environmental Microbiology, 2023, 25 (3), pp.751-765. ⟨10.1111/1462-2920.16322⟩
ISSN: 1462-2912
1462-2920
DOI: 10.1111/1462-2920.16322⟩
Popis: International audience; The formation of intracellular amorphous calcium carbonates (iACC) has been recently observed in a few cultured strains of Microcystis, a potentially toxic bloom-forming cyanobacterium found worldwide in freshwater ecosystems. If iACC-forming Microcystis are abundant within blooms, they may represent a significant amount of particulate Ca. Here, we investigate the significance of iACC biomineralization by Microcystis. First, the presence of iACC-forming Microcystis cells has been detected in several eutrophic lakes, indicating that this phenomenon occurs under environmental conditions. Second, some genotypic (presence/absence of ccyA, a marker gene of iACC biomineralization) and phenotypic (presence/absence of iACC) diversity have been detected within a collection of strains isolated from one single lake. This illustrates that this trait is frequent but also variable within Microcystis even at a single locality. Finally, one-third of publicly available genomes of Microcystis were shown to contain the ccyA gene, revealing a wide geographic and phylogenetic distribution within the genus. Overall, the present work shows that the formation of iACC by Microcystis is common under environmental conditions. While its biological function remains undetermined, this process should be further considered regarding the biology of Microcystis and implications on the Ca geochemical cycle in freshwater environments.
Databáze: OpenAIRE
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