Pathological studies on rice blast, caused by Piricularia oryzae

I. Some studies on the physiology of the pathogene

Abstract

Under anaerobic condition, Piricularia oryzae ceases its growth. The optimum temperature for the growth of the fungus is about 28°C. Nitrate is not reduced though it is available to the fungus. Nitrite seems to be injurious to the fungus.
As to the carbon sources, glucose is effective but starch is not so much useful. Cellulose and pectic matter are also useful, but the latter seems to be still more available.
Oxydase and dehydrase are proved in the culture of the fungus.