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The Effect of Some Protein and Non‐Protein Amino Acids on the Growth of Cladosporium herbarum and Trichothecium roseum
Author(s) -
SIMOLA LIISA KAARINA,
LÖNNROTH KAIJA
Publication year - 1979
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1979.tb02636.x
Subject(s) - amino acid , canavanine , proline , cladosporium , arginine , biochemistry , biology , serine , pipecolic acid , chemistry , botany , penicillium , enzyme
The effect of ten amino acids as the sole nitrogen source for the growth of Cladosporium herbarum (Link.) Fr. and Trichothecium roseum (Bull.) Link. was studied in order to clarify the fungus‐host plant relationship. Special attention was paid to some rare non‐protein amino acids of legumes. The best nitrogen sources for both fungi were γ‐aminobutyric acid, arginine, serine and proline. Cladosporium could use homoarginine and canavanine, but these two amino acids were not used by Trichothecium when each was given as the only nitrogen source. Both fungi utilized ornithine, homoserine and a,γ‐diaminobutyric acid to a limited extent. Pipecolic acid was not growth promoting. The growth‐retarding effects of rare non‐protein amino acids (homoarginine, canavanine, a,γ‐diaminobutyric acid and pipecolic acid) were usually reversed by higher concentrations of their normal analogues. It is possible that rare non‐protein amino acids may slightly protect the host plant against fungal infections, but there are clear differences between fungi in their reaction to non‐protein amino acids.