00967naa a2200145 a 450000100080000000500110000800800410001910000170006024501350007726000090021252005030022165000100072465000160073477300710075019590232013-06-03       2006    bl ---       0--  u    #d1 aLIEBEREI, R.  aPhysiological characteristics of Microcyclus ulei (P. Henn.) V.ARX. - a fungal pathogen of the cyanogenic host Hevea brasiliensis.  c2006  aThe ascomycete Microcyclus ulei causes premature leaf shedding of the rubber tree, Hevea brasiliensis. During the development of this biotrophic fungus in the tissues of infected leaves HCN is liberated from the lesions. Despite high HCN concentrations in the leaf tissue the pathogenic fungus develops infection hyphae. The reaction of M. ulei to hydrogen cyanide and the biochemical properties of a fungal b-glucosidase which is active on the cyanogenic precursors of the host plant are reported.  aFungo  aSeringueira  tJournal of Applied Botany and Food Qualitygv. 80, p. 63-68, 2006.