ACTIVITY OF BETA-D-GLUCOSIDASE OF LUPIN LEAVES INFECTED WITH PLEIOCHAETA-SETOSA (KIRCHN) HUGHES

Activity of beta-D-glucosidase (EC 3.2.1.21) in Lupinus albus and Lupi nus angustifolius leaves was investigated after infection with Pleioch aeta setosa (syn. Ceratophorum setosum) - fungus causing brown leaf sp ot. In L. albus the enzymes activity was increased a little, 12 hours after inoculation and 2 to 3 times 24 hours after infection. At L. ang ustifolius the post-infectional changes were slight and affected only to the membrane bound fraction. The role of beta-D-glucosidase in lupi n - P. setosa interaction was discussed in relation to plant species d iffering in susceptibility to pathogen.