Common crystallographic control in calcite biomineralization of bivalved shells
Common crystallographic control in calcite biomineralization of bivalved shells
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双壳贝壳方解石生物矿化的常见晶体学控制
DOI：
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发表时间：
2007
期刊：
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通讯作者：
Paul Dalbeck
中科院分区：
文献类型：
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作者：
M. Cusack;A. Pérez;Paul Dalbeck
关于产矿生物如何精确控制其晶体学取向的知识是生物矿化的最基本问题之一。我们表明，生物体，构建双壳有共同的机制控制方解石生物矿物的晶体取向，尽管他们不同的进化历史。详细的晶体学在rhynchonelliform腕足动物和双壳类软体动物的外壳超微结构的背景下表明，在umbonal地区方解石晶体的取向与c轴几乎平行于壳表面，并在生长过程中逐步旋转。利用电子背散射衍射（EBSD），这种详细的生物矿化背景晶体学，将在材料，生物和医学科学的未来研究中具有重要的应用。
The knowledge of how mineral-producing organisms exert precise control on their crystallographic orientation is one of the most fundamental questions of biomineralization. We demonstrate that organisms that construct bivalved shells have common mechanisms of controlling the crystallographic orientation of calcite biominerals despite their different evolutionary history. Detailed crystallography in the context of shell ultrastructure in rhynchonelliform brachiopods and bivalve molluscs indicates that at the umbonal regions calcite crystals are oriented with the c-axis nearly parallel to the shell surface and progressively rotate during growth. Such detailed contextual crystallography of biomineralization, using electron backscatter diffraction (EBSD), will have significant applications for future research in materials, biological and medical sciences.