Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (6): 1144-1146. Previous Articles    

Original Articles

在细胞壁上构筑自组装的生物矿化结构

王荔军;王运华;张福锁;杨文胜;李铁津   

  1. 中国农业大学植物营养系.北京(100094);华中农业大学资源环境和农业化学 系,武汉(430070);吉林大学化学系,长春(130023)
  • 发布日期:2002-06-15

Self-assembled Biomineralized Structures Constructed in Plant Cell Walls

Wang Lijun;Wang Yunhua;Zhang Fusuo;Yang Wensheng;Li Tiejin   

  1. Department of Plant Nutrition, China Agricultural University. Beijing(100094);Department of Resources, Environments & Agrochemistry, Huazhong Agricultural University,Wuhan(430070);Department of Chemistry, Jilin University,Changchun(130023)
  • Published:2002-06-15

Aloe plant makes "non-natural" biomineralized structure formed from inorganic precursor species, CaCl_2 in cell walls of leaf spicules by culture techniques. The quadri-prisms of CaCO_3 biominerals were formed in aloe leaf spicules when CaCl_2 was supplied. Quadri-prisms typically ranged in length from 40 μm to 60 μm and were ca. 2~3 μm in width. Prolonged exposure to electron beam in field-emission SEM and fractured using a cooled razor blade can induce a series of artifactual curvatures and cracks on the structure surfaces. Such unique flexibility and rigidity features that typically distinguish biominerals from their counterparts that precipitate abiotically. Supramolecular recognition interactions between organic precursor molecules and the cell wall matrix may provide greater opportunities for structural control by the underlying molecular substrates of cell walls.

Key words: MINERALIZATION, CALCIUM CARBONATE, ALOE, CELL WALL

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