Abstract
(1) Piricularia oryzae is able to utilize DL-norleucine through its conversion to α-ketocaproic acid, although, the natural occurrence of this amino acid still remains questionable. This keto acid is identified as its 2, 4-dinitro-phenylhydrazone.
(2) In the utilization of DL-alanine by P. oryzae some parts of this amino acid were utilized in the form of amino acid itself and other parts via prior conversion to pyruvic acid, but the accumulation of the present keto acid was observed only in the presence such as glucose, as it was recognized' with. of arsenite, as was already recognized with other several microorganisms.
(3) It was established that alanine is pre-ferentially utilized to a proper carbon source such as glucose, as it was recognized with glutamic acid. This may present a probable step towards solving the problem of bioche-mical mechanism of invasion of this fungus and its further growth in the host plant.
