A severe fruit rot of durzan fruits in Bentong and Raub in Pahang; Dengkil in Selangor; Muar
and Kluang in Johore was found to be caused by a Phytophthora sp. Besides fruits, isolates of the
pathogen were also capable of infecting roots, stem and leaves of durian. The isolates were identified
as Phytophthora palmivora, cross-inducing (heterothallic) and of the A 1 mating type, producing
spores when paired with a standard A2 mating type of P. palmivora and another A2 isolate from
cocoa but not with an A 1 mating type of P.parasitica