エチレン感受性花きの老化機構とその制御

概要

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Senescence of many flowers is accelerated by exposure to ethylene. In response to exogenous ethylene, primarily senescence symptom is petal wilting in some flowers including carnation whereas petal abscission is initial symptom of senescence in the other flowers such as Delphinuim. In most ethylene sensitive flowers, ethylene production increases with flower senescence. Treatment with STS, an inhibitor of ethylene action, delays flower senescence. Thus, flower senescence of these flowers is regulated by ethylene. Petal senescence of carnation flowers has been regulated by ethylene produced by gynoecium. Similarly, petal senescence of Portulaca flowers appears to be regulated by ethylene from stamen. There are many ethylene inhibitors, and some of them are practically utilized as a component of preservative. STS is the most popular compound and pulse treatment with STS extends the vase life of many cut flowers. AVG, an inhibitor of ethylene biosynthesis, and 1-MCP, an inhibitor of ethylene action extends the vase life of some cut flowers. Introduction of genes for ethylene biosynthesis and ethylene signal transduction delays flower senescence of carnation, torenia and petunia.
植物化学調節学会の論文
2008-10-06