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Iron biomineralization in the poriferan Ircinia oros

Citation

Meldrum, FC and Heywood, BR and Dickson, DP and Mann, S, Iron biomineralization in the poriferan Ircinia oros, Journal of the Marine Biological Association of the United Kingdom, 75, (4) pp. 993-996. ISSN 0025-3154 (1995) [Refereed Article]

Copyright Statement

Copyright 1995 Cambridge University Press

DOI: doi:10.1017/S0025315400038327

Abstract

Iron-containing precipitates, present within the organic matrix of the poriferan Ircinia oros were identified as crystalline lepidocrocite (γ-FeOOH) by electron diffraction and 57Fe Mössbauer spectroscopy. The crystals were located specifically within the spongin filaments, suggesting that the binding and subsequent accumulation of iron by macromolecules present in these filaments were responsible for mineralization. Iron biomineralization did not appear to serve any specific structural role, but may be involved in biological processes such as detoxification.

It is well recognized that Porifera are active in the biomineralization of calcium carbonate and silica, producing beautiful and intricate skeletons (Simpson, 1984). However, the formation of other biominerals is less well documented. Iron biomineralization has been reported in a few species of keratose sponges (Töwe & Riitzler, 1968; Vacelet et al., 1988), and the mineral has been identified as lepidocrocite (γ-FeOOH). Lepidocrocite is a relatively uncommon biomineral, having previously been identified as only a minor phase in chiton teeth (Webb et al., 1989; Lowenstam & Weiner, 1989).

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Biochemistry and Cell Biology
Research Field:Structural Biology (incl. Macromolecular Modelling)
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Biological Sciences
Author:Heywood, BR (Professor Brigid Heywood)
ID Code:104441
Year Published:1995
Web of Science® Times Cited:1
Deposited By:Research Division
Deposited On:2015-11-11
Last Modified:2015-12-22
Downloads:0

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