Journal
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
Volume 83, Issue 1, Pages 57-61Publisher
SPRINGER
DOI: 10.1023/A:1022903504795
Keywords
Amaryllidaceae; ascorbate pathway; Cryptococcus laurentii; growth inhibition; L-galactonic acid-gamma-lactone; lycorine; yeasts
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The alkaloid lycorine, which is considered to inhibit the last step in ascorbic acid biosynthesis, is produced by Narcissus pseudonarcissus. The growth of two strains (C1 and C3) of Cryptococcus laurentii isolated from root tips of N. pseudonarcissus is inhibited by lycorine, as is the in vivo production of ascorbic acid from L-galactonic acid-gamma-lactone. In contrast, C. laurentii strain C4, isolated from the lycorine-containing bracts of the bulb, was not inhibited by lycorine and did not contain ascorbic acid when cultivated with or without L-galactonic acid-gamma-lactone.
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