苹果圆片陈化期间呼吸途径的变化和乙烯产生的调节

CHANGES IN RESPIRATORY PATHWAY AND REGULATION OF ETHYLENE PRODUCTION IN AGING APPLE DISCS

跃变期前的青香蕉苹果组织圆片陈化后,乙烯产生和呼吸速率都明显增加,12小时左右均达到高峰。KCN和间氯苯氧肟酸分别或共同使用都显著抑制陈化圆片的诱导呼吸。减压渗入KCN或间氯苯氧肟酸处理的圆片陈化后,其乙烯产生速率明显下降。ACC可促进陈化初期圆片的乙烯产生,而氯化钙处理则使陈化后期圆片的乙烯产生增加。放线菌素D和环己亚胺都强烈抑制圆片的乙烯产生并消除了ACC对乙烯产生的促进效应。本文讨论了果实切片诱导呼吸和乙烯产生的相互关系以及诱导乙烯产生的调节机制。

Incubation in moist air of discs excised from preclimacteric apple fruit evokes typical wound - induced ethylene production and respiration with a peak at 12 h. The separated or conjoit use of KCN and CLAM can significantly inhibit the respiratory rate in aged discs. Infiltration of KCN or CLAM into fresh discs decreases the rate of ethylene production. Application of 1 -amino-cyclopropane - 1-carboxylic acid significantly stimulates the ethylene production,and the stimulated ethylene production is eliminated by the application of actinomycin D or cycloheximide. The interrelation between induced respiration and ethylene production, and the mechanism of regulation in ethylene production are discussed in this paper.