Abstract
The increase in ethylene formation and in 1-aminocyclopropane-1-carboxylic acid (ACC) content in flavedo tissue of grapefruit (Citrus paradisi Macfad. cv. Ruby Red) in response to excision was markedly inhibited by exogenous ethylene. Ethylene treatment inhibited the synthesis of ACC, but increased the tissue's capability to malonylate ACC to N-malonyl-ACC, resulting in further reduction in the endogenous ACC content. The development of extractable ACC-malonyl-transferase activity in the tissue was markedly promoted by treatment with exogenous ethylene. These results indicate that the autoinhibition of ethylene production in this tissue results not only from suppression of ACC synthesis, but also from promotion of ACC malonylation; both processes reduce the availability of ACC for ethylene synthesis.
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Abbreviations
- ACC:
-
1-Aminocyclopropane-1-carboxylic acid
- AVG:
-
aminoethyoxyvinylglycine (2-amino-4-(2′-aminoexthoxy)-trans-3-butenoic acid)
- MACC:
-
1-(malonylamino)-cyclopropane-1-carboxylic acid
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Liu, Y., Hoffman, N.E. & Yang, S.F. Ethylene-promoted malonylation of 1-aminocyclopropane-1-carboxylic acid participates in autoinhibition of ethylene synthesis in grapefruit flavedo discs. Planta 164, 565–568 (1985). https://doi.org/10.1007/BF00395976
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DOI: https://doi.org/10.1007/BF00395976