Premium
Dipeptides as Nitrogen Sources for Drosera rotundifolia in Aseptic Culture
Author(s) -
SIMOLA LIISA KAARINA
Publication year - 1978
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.1399-3054.1978.tb01629.x
Subject(s) - aspartic acid , glycine , alanine , valine , methionine , proline , tyrosine , chemistry , amino acid , biochemistry , nitrogen , phenylalanine , aseptic processing , stereochemistry , food science , organic chemistry
The growth of Drosera rotundifolia was studied in aseptic cultures with 17 dipeptides as the only nitrogen source. About half of the dipeptides were well or partly utilized. Compounds containing glycine, alanine, glutamic or aspartic acid are clearly more favourable than dipeptides containing proline. Arginyl‐aspartic acid (1.25 m M ) promoted growth more than inorganic nitrogen (1.25 m M of NH 4 NO 3 ). Glycyl‐alanine gave about the same growth response as NH 4 NO 3 . The inocules died rapidly in medium containing leucyl‐tyrosine and dipeptides containing methionine and valine were also toxic. There was usually a clear correlation between the growth‐retarding or growth‐stimulating effect of the dipeptides and the effects of their amino acid components.