Correlation of Sugar Release and Concanavalin A Agglutinability with Infectivity of Symbiotic Algae from Paramecium bursaria for Aposymbiotic P. bursaria |
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Authors: | DALE S. WEIS |
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Affiliation: | Department of Biology, The Cleveland State University. Cleveland, Ohio 44115 |
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Abstract: | Synopsis. Eighteen strains of algae, including 17 formerly symbiotic with Paramecium bursaria , were tested for capacity to release sugar. Detectable amounts of sugar were found in the supernatant fluids from 10 strains, including 6 strains infective for aposymbiotic P. bursaria syngen 2. The other 4 sugar-releasing strains were noninfective and released ˜26–46 g sugar/mg dry cell weight compared to ˜90–175 g sugar/mg dry cell weight for infective strains. This relationship of infectivity with capacity to release sugar supplements data that indicate a relationship of infectivity with resistance to Con A agglutination. The correlation is completed if we assume that resistance to Con A agglutination and capacity for sugar release must both be present in an algal strain for infectivity. The data thus strongly suggest that these 2 characteristics must be present for infectivity by any algal strains for aposymbiotic P. bursaria syngen 2. |
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Keywords: | Index Key Words: Paramecium bursaria syngen 2: symbiotic algae infectivity sugar release. |
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