苯并噁嗪类化合物研究进展

以丁布(2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one，DIMBOA）为代表的苯并噁嗪嗪类化合物是广泛存在于禾本科作物中的次生物质，对植物病虫害具有广谱抗性，上世纪中叶开始即引起人们重视并开始了一系列研究。近年来，随着分子生物学技术的应用和诱导抗性理论的发展，对这类物质的功能有了进一步的认识。该文综述这类化学物质的最新研究进展。苯并噁嗪类化合物是从色氨酸合成途径分支出来的一类次生代谢物，其含量是随着植物组织和年龄而变化的； 植食性昆虫的取食和病菌的感染能够引起苯并噁嗪类化合物含量的变化以及苯并噁嗪糖苷的水解。基于其独特的分子结构，苯并噁嗪类化合物具有多种生物活性作用，包括抗虫性、对植物的毒性、抗病性、化感作用等。

Research advances in benzoxazinoids

Benzoxazinoids which exist in most Gramineae plants, with 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) as the representative, show broad-spectrum of biological activities. Researches on benzoxazinoids were initialized in 1950-1960's. Recently their biological functions have been much further elucidated due to application of molecular biology technique and the theoretical development of plant induced resistance. The present paper reviews the most recent advances in researches on benzoxazinoids. Benzoxazinoids are secondary metabolites branching out from the tryptophan synthesis pathway. The concentrations of benzoxazinoids vary with plant tissues and ages; and benzoxazinoid accumulation and hydrolyzation of benzoxazinoid glucosides can be induced by feeding of herbivores and infection of pathogens. Benzoxazinoids have many bioactivities, such as pest resistance, phytopoison, pathogen resistance, allopathic effects, etc.