观赏植物基因工程研究进展

评述了近１０ａ来有关植物花青素、花器官发育基因克隆、花衰老机理的研究进展及其应用前景。植物花青素代谢途径及其主要酶类的作用之研究已较为成熟，一大批调控植物花色的结构基础民调节基因已被克隆。利用反义基因及共抑制原理导入外源基因已培育出了新的观赏植物品种，控制植物的花器官发生的基因也被克隆，通过对花器官基因的改变，可以改变植物花化衰老有些是受乙烯的控制，有些则与ＡＢＡ有关。利用基因工程手段为创造新花色

Advances in Genetic Engineering of Ornamental Plant

The cloning and applications of the plant anthocyanin biosynthetic genes,flower organ identity genes and flower senescence genes were reviewed . Plant anthocyanin biosynthetic pathways and involved enzymes were well characterized. Many structural and regulatory genes controlling flower color were cloned. Using direct gene introduction,anti sense RNA and co suppression techniques,some flower plant cultivars with different colors were obtained. Flower pattern can be changed from modifying the genes controlling flower organ identity. The cloned genes opened up a wide range of application in plant science research,such as create cultivars with new flower color,new leaf color,new flower form,and postpone cutting flower period.