Amorphous calcium carbonate biomineralization in the earthworm's calciferous gland: pathways to the formation of crystalline phases

Journal of Structural Biology
L Gago-DuportB Covelo

Abstract

In this study, we investigated the microstructural transformations that take place during carbonate formation in the earthworm's calciferous gland by analysing the evolution from the precursor fluid of the solid phases (spherulites) to the final carbonate concretions released by the gland. Results from HREM and electron diffraction showed that the spherulithic deposits merely consisted of ACC partially transformed to vaterite. Furthermore, comparisons of the diffraction spectra and microstructural analyses allowed the identification of the transition sequences to more stable carbonates. And thus, transformations of ACC to calcite were observed on the surfaces of these amorphous globular aggregates as their smooth characteristic surface became rougher with time. This transition path was not unique, and the presence of aragonite, as an intermediate phase, has also been found. In this particular case, the transition process followed a completely different pathway with the crystallization starting in the centre of the sphere and progressively extending to the periphery, leading to the formation of radial aggregates. In situ experiments performed on the freshly extracted precursor fluid and analysed by FT-IR spectroscopy showed that...Continue Reading

Citations

Aug 25, 2011·The Journal of Physical Chemistry. B·Peter Rez, Alexander Blackwell
Apr 12, 2012·Proceedings of the National Academy of Sciences of the United States of America·Yutao U T GongP U P A Gilbert
Jan 9, 2009·Proceedings. Biological Sciences·S R StürzenbaumA J Morgan
Mar 8, 2014·Micron : the International Research and Review Journal for Microscopy·Juan SongHua Tong
Sep 26, 2015·Journal of the American Chemical Society·Ross T DeVolPupa U P A Gilbert
May 3, 2015·Journal of Structural Biology·Alejandro B Rodríguez-NavarroJoel Gautron
Apr 14, 2015·IUCrJ·Federico GibertiMichele Parrinello
Nov 18, 2010·Nanoscale·Li YangP U P A Gilbert
Jul 28, 2016·Journal of Structural Biology·Stephan E WolfCarlos Rodríguez-Navarro
Nov 3, 2016·Journal of the American Chemical Society·Anat AkivaSteve Weiner
May 28, 2020·Scientific Reports·Nóra Tünde EnyediPéter Németh
Jan 1, 2017·ChemPlusChem·Bram CantaertTakashi Kato
Aug 21, 2015·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Erick S VasquezKeisha B Walters
Dec 2, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Wenyong DongWei Li

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