Earthworm granules: A model of non-classical biogenic calcium carbonate phase transformations

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dc.contributor.authorMandera, Sara
dc.contributor.authorCoronado Vila, Ismael
dc.contributor.authorFernández Díaz, Lurdes
dc.contributor.authorMazur, Maciej
dc.contributor.authorCruz, Juncal A.
dc.contributor.authorJanuszewicz, Bartomiej
dc.contributor.authorFernández Martínez, Esperanza
dc.contributor.authorCózar Maldonado, Pedro
dc.contributor.authorStolarski, Jaroslaw
dc.date.accessioned2023-06-22T11:24:01Z
dc.date.available2023-06-22T11:24:01Z
dc.date.issued2023-05
dc.description.abstractDifferent non-classical crystallization mechanisms have been invoked to explain structural and compositional properties of biocrystals. The identification of precursor amorphous nanoparticle aggregation as an onset process in the formation of numerous biominerals (crystallization via particle attachment) constituted a most important breakthrough for understanding biologically mediated mineralization. A comprehensive understanding about how the attached amorphous particles transform into more stable, crystalline grains has yet to be elucidated. Here, we document structural, biogeochemical, and crystallographic aspects of the formation as well as the further phase transformations of the amorphous calcium carbonate particles formed by cultured specimens of earthworm Lumbricus terrestris. In-situ observations evidence the formation of proto-vaterite after dehydration of earthworm-produced ACC, which is subsequently followed by proto-vaterite transformation into calcite through nanoparticle attachment within the organic framework. In culture medium spiked with trace amounts of Mn2+, the cauliflower-like proto-vaterite structures become longer-lived than in the absence of Mn2+. We propose that the formation of calcite crystals takes place through a non-classical recrystallization path that involves migration of proto-vaterite nanoparticles to the crystallization site, and then, their transformation into calcite via a dissolution-recrystallization reaction. The latter is complemented by ion-by-ion crystal growth and associated with impurity release. These observations are integrated into a new model of the biocrystallization of earthworm-produced carbonate granules which highlights the sensibility of this process to environmental chemical changes, its potential impact on the bioavailability of contaminants as well as the threat that chemical pollution poses to the normal development of its early stages.
dc.description.departmentDepto. de Mineralogía y Petrología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipNational Science Center (Poland)
dc.description.sponsorshipMinisterio de Ciencia, Innovación y Universidades
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/78682
dc.identifier.doi10.1016/j.actbio.2023.03.034
dc.identifier.issn1742-7061
dc.identifier.officialurlhttps://doi.org/10.1016/j.actbio.2023.03.034
dc.identifier.urihttps://hdl.handle.net/20.500.14352/72382
dc.journal.titleActa Biomaterialia
dc.language.isoeng
dc.page.final163
dc.page.initial149
dc.publisherElsevier
dc.relation.projectID2017/25/B/ST10/02221
dc.relation.projectID(CGL2016-77138-C2-1-P, PID2021-125467NB-I00)
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.cdu549.742.21:595.1
dc.subject.keywordACC
dc.subject.keywordBiomineralization
dc.subject.keywordCPA
dc.subject.keywordPhase transformation
dc.subject.keywordShort-range ordering
dc.subject.ucmMineralogía (Geología)
dc.subject.unesco2506.11 Mineralogía
dc.titleEarthworm granules: A model of non-classical biogenic calcium carbonate phase transformations
dc.typejournal article
dc.volume.number162
dspace.entity.typePublication
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