Amine assimilation of Corynebacterium sepedonicum (Spieck. et Kott.) Skapt. et Burkh. and the resistance of potatoes to bacterial rot

Abstract

Corynebacterium sepedonicum can grow in a medium containing only two amino acids: asparagine and methionine as sources of nitrogen. In the presence of cystine, γ-aminobutyric acid, β-alanine, glycine, and ethanolamine, the growth of the organism was inhibited or retarded. Even in the presence of casein hydrolysate, cystine inhibits the bacterial growth. The presence of cystine and certain other amino acids in the tissues of potatoes could, in part, explain the slow growth of the organism in the host tissues, the late appearance of the potato ring rot symptoms, and the resistance of certain potato varieties to ring rot.