香石竹（石竹）衰老的调控：脱落酸和二氧化碳对乙烯产生的影响
Regulation of Senescence in Carnation (Dianthus caryophyllus): Effect of Abscisic Acid and Carbon Dioxide on Ethylene Production.
作者信息
Mayak S, Dilley D R
机构信息
Michigan State University.
出版信息
Plant Physiol. 1976 Nov;58(5):663-5. doi: 10.1104/pp.58.5.663.
Abstract
Abscisic acid hastened senescence of carnation flowers and this was preceded by stimulation of accelerated ethylene production. Carbon dioxide delayed the onset of autocatalytic ethylene production in flowers regardless of treatment with abscisic acid. Flowers exhibited a low and transient climacteric of ethylene production without wilting while in 4% carbon dioxide and underwent accelerated ethylene production culminating in wilting when removed from carbon dioxide. Hypobaric ventilation, which lowers ethylene to hyponormal levels within tissues, extended flower longevity and largely negated enhancement of senescence by abscisic acid. Supplementing hypobarically ventilated flowers with ethylene hastened senescence irrespective of abscisic acid treatment. Collectively, the data indicate that abscisic acid hastens senescence of carnations largely as a result of advancing the onset of autocatalytic ethylene production.
摘要
脱落酸加速了香石竹花朵的衰老，并且在此之前会刺激乙烯加速生成。无论是否用脱落酸处理，二氧化碳都会延迟花朵中自催化乙烯生成的开始。花朵在4%二氧化碳环境中时，乙烯生成呈现出低水平且短暂的跃变，不会枯萎；而从二氧化碳环境中移出后，乙烯生成加速，最终导致枯萎。减压通风可将组织内乙烯降至低于正常水平，从而延长花朵寿命，并在很大程度上抵消脱落酸对衰老的促进作用。无论是否进行脱落酸处理，向减压通风处理的花朵补充乙烯都会加速衰老。总体而言，数据表明脱落酸加速香石竹衰老主要是由于提前引发了自催化乙烯的生成。
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