植物病原真菌毒素除草活性研究现状

自然界中很多植物病原真菌分泌的毒素都具有杀草活性，可使杂草白化、萎蔫、生长受抑制或被杀除，不少杂草生防菌的发酵液或粗毒素对多种杂草也表现出抑制活性，植物病原真菌毒素的开发利用已成为近年来微生物除草剂研究的热点之一。不同真菌毒素的生物活性、化学结构、作用位点、作用机制各不相同，可为寻求新型除草剂提供新思路。就植物病原真菌毒素的除草活性、防除对象、作用机制及其在新型除草剂开发和杂草生物防治中的作用进行了总结和评述。

Research review on herbicide activity of phytopathogeny mycotoxins

Mycotoxin with herbicide activity could be excreted by many plant pathogenic fungi. It can make weeds be albino and wilting, restrain the growth of weeds or kill weeds. Fermentation solution or crude toxins of many biocontrol agents to weeds also have weed controlling activity. The utilization of mycotoxin became one of the hot topics of researches on microbial herbicide in recent years. Different kinds of mycotoxin have different bioactivity, chemical structure, action site and mechanism and this could be a new approach for researchers to find out new herbicides. In this paper, the plant pathogenic mycotoxin as biocontrol agent was discussed in its herbicidal activity, control objects, mechanisms and biocontrol effect on weeds and the role for new herbicide development.