一、引言酶是一种具有特异催化功能的蛋白质,是构成生命的最重要的物质之一。所谓同工酶是指某一酶系统中结构不同,催化反应相同的酶类。从发育生物学的观点来看,多细胞生物的发育过程可以看作是在一定条件下,一系列基因在时间上和空间上依次顺序表达过程,各种植物不同器官的分化则是在 I. INTRODUCTION Enzyme is a kind of protein with specific catalytic function and is one of the most important substances in life. The so-called isozyme refers to the structure of a different enzyme system, the same catalytic reaction enzymes. From the perspective of developmental biology, the developmental process of multicellular organisms can be regarded as the sequential expression of a series of genes in time and space under certain conditions, and the differentiation of different organs in various plants is at