THE FIBRILLAR POLYSACCHARIDES AND THEIR LINKAGE TO ALGAENAN IN THE TRILAMINAR LAYER OF THE CELL WALL OF COELASTRUM SPHAERICUM (CHLOROPHYCEAE) |
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| Authors: | Marí a C. Rodrí guez,Miguel D. Noseda,Alberto S. Cerezo |
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| Affiliation: | Department of Biology, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina; Department of Biochemistry, Universidade Federal do Parana, 81531-990 Curitiba, Brazil; Department of Organic Chemistry (CIHIDECAR-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina |
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| Abstract: | Methylation and spectroscopical analyses of DMSO-LiCl-solubilized fractions of the fibrillar cell wall of Coelastrum sphaericum Näg. established the presence of cellulose and β-1,4-linked mannan. A small proportion (2–7%) of (1→2) linkages in β-mannan that introduced an interruption in the regular ribbon chain conformation was interpreted as a component that modulated the mechanical strength of the cell wall. The trilaminar layer fractions consisted mostly of algaenan and cellulose. Evidence for ether linkages between glucose C-6 in the β-1,4-glucan and algaenan was obtained. |
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| Keywords: | algaenan cell wall cellulose Coelastrum sphaericum fibrillar polysaccharides |
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