Abstract
The deposition of silica by sponges involves a special membrane and an internal organic matrix, the axial filament. A hexagonal cross sectional shape of the filament may act as a basis, through differential growth, of the formation of a trigonal shape. Dynamic processes involved in silica deposition include membrane and organic filament syntheses and assembly; transport, accumulation and polymerization of silicic acid; and termination of these processes. The theoretical details of these processes are discussed. The pattern of development of complex siliceous structures (asters) in Geodia cydonium involve the formation of short, terminal processes which then become fused together and finally form a star-shaped pattern. It is difficult to invoke the presence of a centrally located silicification center as a basis for this sequence of morphogenesis. Such centers appear to be present during the development of other morphological types of siliceous sponge structures and such a center may be present in the early stages of development of Geodia asters before the maturation of the tips of the structures. Both sodium and calcium ions appear to interact with the sponge silicification system as determined by their effects on spicules formed in the presence of germanic acid. The absence of central bulbs in marine spicules grown in germanic acid may be partly due to the high concentration of these (and other) ions in sea water.
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BHATTACHARYYA, P. & VOLCANI, B.E., 1980. Sodium dependent silicate transport in the apochlorotic marine diatom Nitzschia alba. Proc. Nat. Acad. Sci. U.S.A., 77: 6386–6390.
DAVIE, E.I., SIMPSON, T.L., & GARRONE, R., 1983. Experimental germanium incorporation into siliceous sponge spicules. Biol. Cell., 48: 191–201.
GARRONE, R., 1961. Collagene, spongine et squellette mineral chez l’eponge Haliclona rosea (O. S.) (Demosponge Ilaploscleride). J. Microsc., 8: 581–598.
GARRONE, R., SIMPSON, T.L., & POTTU-BOUMENDIL, J., 1981. Ultrastructure and deposition of silica in sponges. In Silicon and Siliceous Structures in Biological Systems (ed., T.L. Simpson & B.E. Volcani ), pp. 495–525. New York: Springer Verlag.
HARTMAN, W.D., 1981. Form and distribution of silica in sponges. In Silicon and Siliceous Structures in Biological Systems (ed. T.L. Simpson & B.E. Volcani ), pp. 453–493. New York: Springer Verlag.
MACKIE, G.O. & SINGULA, C.L., 1983. Studies on hexactinellid sponges. I. Histology of Rhabdocalyptus dawsoni (Lambe). Phil. Trans. Roy. Soc. Lond., 301: 365–400.
REISWIG, H.M., 1971. The axial symmetry of sponge spicules and its phylogenetic significance. Cahiers Biol. mar., 12: 505–514.
SIMPSON, T.L., 1981. Effects of germanium on silica deposition in sponges. In Silicon and Siliceous Structures in Biological Systems (ed., T.L. Simpson & B.E. Volcani ), pp. 529–550. New York: Springer Verlag.
SIMPSON, T.L., 1984. The Cell Biology of Sponges. New York: Springer Verlag.
SIMPSON, T.L. & LANGENBRUCH, P-F., 1984. Effects of germanium (Ge) on the morphogenesis of a complex silica structure and on the assembly of the collagenous gemmule coat in a freshwater sponge. Biol. Cell., 50: 181–190.
SIMPSON, T.L. & VACCARO, C.A., 1974. An ultrastructural study of silica deposition in the fresh water sponge Spongilla lacustris. J. Ultrastr. Res., 47: 296–309.
SIMPSON, T.L., REFOLO, L.M., & KABY, M.E., 1979. Effects of germanium on the morphology of silica deposition in a fresh water sponge. J. Morph., 159: 343–354.
SIMPSON, T.L., GARRONE, R., & MAZZORANA, M., 1983. Interaction of germanium (Ge) with biosilicification in the freshwater sponge Ephydatia nurelleri: Evidence of localized membrane domains in the silicalemma. J. Ultrastr. Res., 85: 159–174.
SIMPSON, T.L., LANGENBRUCH, P-F., & SCALERA-LIACI, L., 1985a. Silica spicules and axial filaments of the marine sponge Stelletta grubbi ( Porifera, Demospongiae). Zoomorphology, 105: 375–382.
SIMPSON, T.L., GIL, M., CONNES, R., DIAZ, J-P., & PARIS, J., 1985b. Effects of germanium (Ge) on the silica spicules of the marine sponge Suberites domuncula: Transformation of spicule type. J. Morph., 183: 117–128.
SULLIVAN, C.W. & VOLCANI, B.E., 1981. Silicon in the cellular metabolism in diatoms. In Silicon and Siliceous Structures in Biological Systems (ed. T.L. Simpson & B.E. Volcani ), pp. 15–42. New York: Springer-Verlag.
VULCANI, B.E., 1981. Cell wall formation in diatoms: Morphogenesis and biochemistry. In Silicon and Siliceous Structures in Biological Systems (ed. T.L. Simpson & B.E. Volcani), pp., 157–200. New York: Springer Verlag.
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Simpson, T.L. (1989). Silicification Processes in Sponges: Geodia Asters and the Problem of Morphogenesis of Spicule Shape. In: Crick, R.E. (eds) Origin, Evolution, and Modern Aspects of Biomineralization in Plants and Animals. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-6114-6_9
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DOI: https://doi.org/10.1007/978-1-4757-6114-6_9
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