THE GELATINOUS SHEATH OF MICROCYSTIS IN LAKE SUWA
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概要
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Chemical characteristics of the gelatinous sheath produced by the three Microcystis species which constitute waterbloom in Lake suwa were investigated from an ecological standpoint. The outlook and solubility of the gelatinous sheath were different among M. aeruginosa, M. viridis and M. wesenbergii, though the main component was similar for them all; heteropolysaccharides. The gelatinous sheath of the three species was composed of the same sugar constituents, but each proportion was different among them. The easily soluble part of the gelatinous sheath of M. aeruginosa and M. wesenbergii fluctuated considerably with time. The organic materials of the gelatinous sheath released to lakewater could depend on the dominant species. The sugar composition of carbohydrates in the cells changed according to environmental stresses such as water temperature, solar radiation and the nutrient concentration.
- 信州大学理学部の論文
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