Department of Vegetable Crops, University of California, 95616, Davis, CA, USA.
Planta. 1985 Jul;164(4):565-8. doi: 10.1007/BF00395976.
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.
随着外源性乙烯的加入，葡萄柚（Citrus paradisi Macfad. cv. Ruby Red）果皮组织中乙烯生成和 1-氨基环丙烷-1-羧酸（ACC）含量的增加明显受到抑制。乙烯处理抑制 ACC 的合成，但增加了组织将 ACC 丙二酰化形成 N-丙二酰基-ACC 的能力，从而进一步降低了内源 ACC 含量。外源性乙烯处理显著促进了组织中可提取的 ACC-丙二酰基转移酶活性的发展。这些结果表明，该组织中乙烯生成的自动抑制不仅源于 ACC 合成的抑制，还源于 ACC 丙二酰化的促进；这两个过程都减少了 ACC 合成乙烯的可用性。
