Photosynthetic activity in rice seedlings infected with Piricularia oryzae Cavara

Changes in photosynthetic activity in the rice seedlings infected with piricularia oryzae Cavara (blast disease) were examined comparing with the non-infected seedlings. The assimilated 14C radioactivity was about 50% lower in the infected rice seedlings than in the non-infected seedlings. A little difference in the distribution of 14C radioactivity was observed. The 14C activity in the cationic fraction of ethanol soluble fractions was a little higher in the infected seedling. (auth.)