期刊
CELLULOSE
卷 27, 期 1, 页码 57-69出版社
SPRINGER
DOI: 10.1007/s10570-019-02793-3
关键词
Cellulose polymorph; Cellulose synthase complexes; Terminal complexes; Micrasterias; Sum frequency generation (SFG) spectroscopy
资金
- Center for Lignocellulose Structure and Formation, Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001090]
Cellulose is synthesized into fibrils by enzyme complexes called cellulose synthase complexes (CSCs). We analyzed cellulose fibrils produced in a dividing unicellular freshwater alga Micrasterias with vibrational sum frequency generation (SFG) spectroscopy. It is known that cellulose in the daughter semi-cell of Micrasterias is synthesized by the isolated individual rosette-shape CSC, while cellulose in the mother semi-cell is produced by hexagonal arrays of rosette-shape CSCs. Comparing the SFG spectra of cellulose in these two regions of a single cell of Micrasterias showed intriguing correlations between the polymorphic structure and crystal size of cellulose and the shape and size of the CSCs. This information may provide a foundation needed to understand what determines the cellulose structure and crystallinity in plant cell walls.
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