Sea urchin spine calcite forms via a transient amorphous calcium carbonate phase

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Yael Politi - , Weizmann Institute of Science (Autor:in)
  • Talmon Arad - , Weizmann Institute of Science (Autor:in)
  • Eugenia Klein - , Weizmann Institute of Science (Autor:in)
  • Steve Weiner - , Weizmann Institute of Science (Autor:in)
  • Lia Addadi - , Weizmann Institute of Science (Autor:in)

Abstract

The skeletons of adult echinoderms comprise large single crystals of calcite with smooth convoluted fenestrated morphologies, raising many questions about how they form. By using water etching, infrared spectroscopy, electron diffraction, and environmental scanning electron microscopy, we show that sea urchin spine regeneration proceeds via the initial deposition of amorphous calcium carbonate. Because most echinoderms produce the same type of skeletal material, they probably all use this same mechanism. Deposition of transient amorphous phases as a strategy for producing single crystals with complex morphology may have interesting implications for the development of sophisticated materials.

Details

OriginalspracheEnglisch
Seiten (von - bis)1161-1164
Seitenumfang4
FachzeitschriftScience
Jahrgang306
Ausgabenummer5699
PublikationsstatusVeröffentlicht - 12 Nov. 2004
Peer-Review-StatusJa
Extern publiziertJa

Externe IDs

PubMed 15539597
ORCID /0000-0002-2872-8277/work/142239180

Schlagworte