Toxigenicity of some fusaria associated with plant and @entity1 XXXX .

@entity1 @entity286 @entity137 @entity66 @entity10437 @entity4278 @entity579
In the course of a @entity66 (Malaysia comprises the Malaysian Peninsula, Sabah and Sarawak) during the period 1981-1986, more than 1000 isolates of Fusarium were obtained from diseased plants and seeds. Two further isolates were obtained from @entity1 admitted to hospitals in the same area. The occurrences of F. proliferatum, F. nygamai and F. longipes are new records for the Malaysian Peninsula and the association of @entity10437 and @entity4278 . redolens with @entity1 diseases does not seem to have been reported previously. Ten representative species which could be classified into seven sections of the genus were selected for studies of their toxigenicity in liquid cultures and/or on @entity579 . Crude toxin preparations from culture filtrates or extracts of the inoculated @entity579 were tested for @entity137 to brine shrimp larvae and @entity286 mesophyll protoplasts. The protoplasts were more sensitive than the brine shrimp larvae to the toxin preparations, except those from the isolates of @entity10437 and @entity4278 . redolens obtained from either @entity1 or @entity286 . The @entity137 of the preparations from @entity579 cultures per g @entity579 was always greater than the @entity137 per ml of culture filtrates from cultures grown on Czapek-Dox broth, Czapek-Dox supplemented with 1% (w/v) peptone or Czapek-Dox supplemented with 5% (w/v) tobacco extract. The activity of all toxin preparations was stable to heat. It is concluded that the occurrence of toxigenic species of Fusarium in the Malaysian Peninsula is widespread and that they may pose a serious threat to the health of @entity1 , animal and plant populations.
