微生物降解三唑类杀菌剂研究进展

三唑类杀菌剂因具有高效、低毒的特性已在中国得到广泛使用,但同时也因其残留期较长、易污染土壤而备受关注。微生物降解被认为是修复被污染土壤的有效措施。文章从降解三唑类杀菌剂的微生物种类、降解机理及影响微生物降解的因素等方面进行了综述,同时指出,目前有关微生物降解三唑类杀菌剂的研究多数仅限于降解菌的筛选及影响降解的因素分析等方面,对于三唑类杀菌剂的微生物代谢途径、降解过程中起关键作用的酶和基因,以及对手性三唑类杀菌剂的对映体选择性降解机制等机理方面的研究仍较少,相关研究有待进一步加强。

Research progress on microbial degradation of triazole fungicides

Given their high efficiency and low toxicity triazole fungicides are wildly used in our country. However, they have raised much concern because of their long persistence and easy pollution to soil. Biodegradation is an effective method to triazoles bioremediation, the microbial degradation mechanisms of triazole fungicides by soil microorganisms were reviewed in the current work. In the field of triazole fungicides biodegradation, most of the research has been focused on the screen of the degrading micro-organisms and factors that have influence on the biodegradation. The studies about degradation mechanisms including the metabolic pathway, the enantioselective degradation of triazole fungicides, the key enzymes and the mediated genes in the biodegradation of triazole fungicides was limited. So the above research contents needed to be further studied.