Abstract
In sections from hypocotyls of dark-grown mung-bean (Vigna radiata L.) seedlings, D-phenylalanine and D-methionine (D-met) inhibited the formation of 1-(malonylamino)cyclopropane-1-carboxylic acid from exogenously administered 1-aminocyclopropane-1-carboxylic acid (ACC), resulting in an increase in free ACC content and stimulation of ethylene production, whereas their L-enantiomers had little or no such effect. When the hypocotyls were administered D-Met, it was mainly metabolized to N-malonylmethionine and N-malonylmethionine sulfoxide, and this malonylation process was inhibited to a greater extent by ACC and D-amino acids (phenylalanine and serine) than by L-amino acids. These results indicate that malonylation of D-amino acids and of ACC are intimately interrelated.
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Abbreviations
- ACC:
-
1-aminocyclopropane-1-carboxylic acid
- MACC:
-
1-(malonylamino)cyclopropane-1-carboxylic acid
- Mes:
-
2-(N-morpholino)ethanesulfonic acid
- Met:
-
methionine
- MetSO:
-
methionine sulfoxide
- Phe:
-
phenylalanine
- Ser:
-
serine
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Liu, Y., Hoffman, N.E. & Yang, S.F. Relationship between the malonylation of 1-aminocyclopropane-1-carboxylic acid and D-amino acids in mung-bean hypocotyls. Planta 158, 437–441 (1983). https://doi.org/10.1007/BF00397737
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DOI: https://doi.org/10.1007/BF00397737