Abeles F B, Holm R E
Department of the Army, Fort Detrick, Frederick, Maryland.
Plant Physiol. 1966 Oct;41(8):1337-42. doi: 10.1104/pp.41.8.1337.
Ethylene stimulated RNA and protein synthesis in bean (Phaseolus vulgaris L. var. Red Kidney) abscission zone explants prior to abscission. The effect of ethylene on RNA synthesis and abscission was blocked by actinomycin D. Carbon dioxide, which inhibits the effect of ethylene on abscission, also inhibited the influence of ethylene on protein synthesis. An aging period appears to be essential before bean explants respond to ethylene. Stimulation of protein synthesis by ethylene occurred only in receptive or senescent explants. Treatment of juvenile explants with ethylene, which has no effect on abscission also has no effect on protein synthesis. Evidence in favor of a hormonal role for ethylene during abscission is discussed.
在脱落之前,乙烯刺激菜豆(菜豆属普通菜豆变种红肾豆)离区外植体中的RNA和蛋白质合成。放线菌素D可阻断乙烯对RNA合成和脱落的影响。抑制乙烯对脱落作用的二氧化碳,也抑制乙烯对蛋白质合成的影响。在菜豆外植体对乙烯产生反应之前,似乎需要一个老化期。乙烯对蛋白质合成的刺激仅发生在感受态或衰老的外植体中。用乙烯处理幼年外植体,对脱落没有影响,对蛋白质合成也没有影响。文中讨论了支持乙烯在脱落过程中起激素作用的证据。