Erosion of the prismatic layer by the organic matrix during the formation of the nacre-prism transition layer in the shell of Pinctada fucata (Bivalvia, Mollusca)  

作　　者：LIU XiaoJun LIU Chang SUN Juan ZHOU YuJuan ZHENG GuiLan ZHANG GuiYou WANG HongZhong XIE LiPing ZHANG RongQing 

机构地区：[1]Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing 100084, China [2]Protein Science Laboratory of the Ministry of Education, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Science Bulletin》2011年第9期869-876,共8页

基　　金：supported by the National Natural Science Foundation of China (U0831001 and 40876068);the National High Technology Research and Development Program of China (2010CB126405 and 2010AA- 09Z405)

摘　　要：Three variants of the sequence of formation of the nacre-prism transition layer were observed in Pinctada fucata (Bivalvia, Mollusca) shells. In each case, the layer was formed by the organic matrix secreted by the mantle, together with the interprismatic organic envelope. The continuity of the organic phase throughout the shell was maintained as the new nacreous layer was formed on the nacre-prism transition layer. Changes in the interprismatic organic envelopes on either side of the nacre-prism transition zone indicated that the organic matrix of the nacre-prism transition layer becomes embedded into the organic phase of the prismatic layer. It is concluded that penetration and erosion of the prisms by the organic matrix generates a strong bond between the prismatic and nacreous layers.Three variants of the sequence of formation of the nacre-prism transition layer were observed in Pinctadafucata （Bivalvia, Mol- lusca） shells. In each case, the layer was formed by the organic matrix secreted by the mantle, together with the interprismatic organic envelope. The continuity of the organic phase throughout the shell was maintained as the new nacreous layer was formed on the nacre-prism transition layer. Changes in the interprismatic organic envelopes on either side of the nacre-prism transition zone indicated that the organic matrix of the nacre-prism transition layer becomes embedded into the organic phase of the prismatic layer. It is concluded that penetration and erosion of the prisms by the organic matrix generates a strong bond between the prismatic and nacreous layers.

关 键 词：有机基质 珍珠层 过渡层 双壳类 棱镜 软体动物 侵蚀 棱柱 

分 类 号：S63[农业科学—蔬菜学] TS933.23[农业科学—园艺学]