Phytophthora polysaccharide

Figure 3. E. seiberi wilting bio-assay of purified Phytophthora polysaccharides ...

Phytophthora Polysaccharides as Determined by g.l.c./m.s. of their Partially Methylated Alditol Acetates (50)... 

Jarvis, M. C., Threlfall, D. R., Friend, J. (1981b). Potato cell wall polysaccharides degradation with enzymes from Phytophthora infestans. J. Exp. Bol, 32,1309-1319. 

Antimicrobial defenses in most plants, on the other hand, have been shown to result from a post-challenge response of the plant elicited by the pathogen through products associated with the invading organism. Such products are extra-cellular polysaccharides of bacteria, or the 3-qlucans of Phytophthora mycellial walls (2). 

TABLE III. Monosaccharide Composition of the Purified Polysaccharides from Phytophthora Culture Filtrates (50)... 

Phytophthora spp. and other species of Oomycetes also have cytoplasmic 3,6-3-glucans (mycolaminarins) and their phosphate esters (73). These polysaccharides also induce wilting in avocado (Persea indica) and other plants (40) (see Table II). 

Among the polysaccharide elicitors are 3,6-3-glucans from Phytophthora megasperma (84, 85) and yeast cell walls (59) and the algal glucan, laminarin (84)., which have structures comparable to those described for the wilt-inducing P. cinnamomi,... 

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