GIANT SILICEOUS SPICULES FROM THE DEEP-SEA GLASS SPONGE MONORHAPHIS CHUNI

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	GIANT SILICEOUS SPICULES FROM THE DEEP-SEA GLASS SPONGE MONORHAPHIS CHUNI
	Wang, XH (Wang, Xiaohong); Schroder, HC (Schroeder, Heinz C.); Muller, WEG (Mueller, Werner E. G.) 编者 Jeon KW
刊名	INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY, VOL 273 丛书: International Review of Cell and Molecular Biology
	2009
卷号	273 页码:69-
关键词	Sponge Porifera Hexactinellida Spicule Giant basal spicule Silicatein Biomaterial science
ISSN号	1937-6448 ISBN 978-0-12-374804-1
英文摘要	Only 13 years after realizing, during a repair of a telegraph cable pulled out from the deep sea, that the depth of the ocean is plentifully populated with a highly diverse fauna and flora, the Challenger expedition (1873-1876) treasured up a rich collection of vitreous sponges (Hexactinellida). They had been described by Schulze and represent the phylogenetically oldest class of siliceous sponges (phylum Porifera); they are eye-catching because of their distinct body plan, which relies on a filigree skeleton. It is constructed by an array of morphologically determined elements, the spicules. Soon after, during the German Deep Sea Expedition "Valdivia" (1898-1899), Schulze could describe the largest siliceous hexactinellid sponge on Earth, the up to 3-m high Monorhaphis chuni, which develops the equally largest bio-silica structure, the giant basal spicules (3 m x 10 mm). Using these spicules as a model, basic knowledge on the morphology, formation, and development of the skeletal elements could be achieved. They are formed by a proteinaceous scaffold (composed of a 27-kDa protein), which mediates the formation of the siliceous lamellae, into which the proteins are encased. The high number of 800 of 5-10 mu m thick lamellae is concentrically arranged around the axial canal. The silica matrix is composed of almost pure silicon oxide, providing it with unusually optophysical properties, which are superior to those of man-made waveguides. Experiments might suggest that the spicules function in vivo as a nonocular photoreception system. In addition, the spicules have exceptional mechanical properties, combining mechanical stability with strength and stiffness. Like demosponges, also the hexactinellids synthesize their silica enzymatically, via the enzyme silicatein (27-kDa protein). It is suggested that these basic insights will surely contribute to a further applied utilization and exploration of silica in bio-material/biomedical science.
学科主题	古生物学
WOS关键词	DEMOSPONGE SUBERITES-DOMUNCULA ; GEODIA-CYDONIUM ; HEXACTINELLID MONORHAPHIS ; EVOLUTIONARY RELATIONSHIPS ; SILICATEIN FILAMENTS ; DIATOM FRUSTULE ; BIOSILICA-GLASS ; SNOWBALL EARTH ; AMINO-ACID ; PORIFERA
WOS研究方向	Biochemistry & Molecular Biology ; Cell Biology
语种	英语
出版者	ELSEVIER ACADEMIC PRESS INC
WOS记录号	WOS:000263825900003
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38894]
专题	中国地质调查局
作者单位	Johannes Gutenberg Univ Mainz, Inst Physiol Chem, Angew Mol Biol Abt, D-6500 Mainz, Germany
推荐引用方式 GB/T 7714	Wang, XH ,Schroder, HC ,Muller, WEG . GIANT SILICEOUS SPICULES FROM THE DEEP-SEA GLASS SPONGE MONORHAPHIS CHUNI[J]. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY, VOL 273 丛书: International Review of Cell and Molecular Biology,2009,273:69-.
APA	Wang, XH ,Schroder, HC ,&Muller, WEG .(2009).GIANT SILICEOUS SPICULES FROM THE DEEP-SEA GLASS SPONGE MONORHAPHIS CHUNI.INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY, VOL 273 丛书: International Review of Cell and Molecular Biology,273,69-.
MLA	Wang, XH ,et al."GIANT SILICEOUS SPICULES FROM THE DEEP-SEA GLASS SPONGE MONORHAPHIS CHUNI".INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY, VOL 273 丛书: International Review of Cell and Molecular Biology 273(2009):69-.