Aspects of Biological Silicification
This paper presents a unified view of silicified mineral formation within a unicellular organ. Analytical, biochemical and structural data are presented for hair cells from the lemma of the grass Phalaris canariensis L. Structural information is presented from electron microscopy, solid state nmr and nitrogen adsorption studies. Analytical data is provided by EDXA and SPM studies at different stages of development. Information on the changing nature of the secondary cell wall associated with the biomineral was obtained by in vivo radiochemical labelling with 14C glucose and 3H arabinose followed by graded acid hydrolysis and enzymatic degradation followed by chromatography. Mechanisms of structural organization are discussed in relation to spatial constraints, ordered particle aggregation and chemical regulation.
KeywordsHair Cell Hair Sample Secondary Cell Wall Biogenic Silica Chemical Regulation
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- ILER, RK., 1979. The Chemistry of Silica. 866 pp. John Wiley, New York.Google Scholar
- MANN, S., PERRY, C.C., WILLIAMS, R.J.P., FYFE, C.A., GOBBI, G.C., & KENNEDY, G.J., 1983. The characterization of the nature of silica in biological systems. J. Chem. Soc. Chem. Comm.: 168–170.Google Scholar
- MANN, S., & PERRY, C.C., 1986. Structural aspects of biogenic silica. CIBA Found. Sym. no. 121: 40–53.Google Scholar
- PERRY, C.C., 1985. Silicification in biological systems. D. Phil. thesis, Univ. Oxford.Google Scholar