The characteristics of the pectic enzyme polygalacturonase (PG) of Phytophthora meadii isolates from petioles of rubber (Hevea brasiliensis) genotypes were compared in relation to (i) aggressiveness (virulence) in infecting detached petioles of a susceptible rubber genotype (PB86) or (ii) in relation to the availability of purified rubber petiole cell walls (obtained from a Phytophthora-resista...
