Structural studies of the extracellular β-D-glucans from Phytophthora parasitica Dastur

Several extracellular glucans have been isolated from Phytophthora parasitica Dastur, a phytopathogenic fungus of the carnation. These polysaccharides consist of a mixture of (1 --> 3)(1 --> 6)-beta-D-glucans whose molecular masses varied from 1 x 10(4) to 5 x 10(6) Da. All of these polysaccharides have a main chain of beta-(1 --> 3)-linked D-glucose residues substituted with mono-, di- and oligo-saccharidic chains attached through (1 --> 6) linkages. (C) 1998 Elsevier Science Ltd. All rights reserved.