摘要
氯嘧磺隆是长残留除草剂,污染土壤后影响土壤肥力和后茬作物生长.筛选氯嘧磺隆降解菌21株,纯培养条件下,7d对初始浓度50 mg/L氯嘧磺隆的降解达到0.75％ ～ 80.77％.对筛选到的氯嘧磺隆降解菌进行了16S rDNA基因扩增、序列测定和系统学分析,结果显示,所选菌株在系统发育地位上分别属于肠杆菌、短杆菌、柠檬酸杆菌、志贺氏菌、寡养单胞菌、无色杆菌、假单胞菌等7个属.
Chlorimuron-ethyl is a long residual herbicide. Soil contaminated with chlorimuron-ethyl affect soil fertility and crop growth. In this paper, 21 chlorimuron-ethyl degrading bacterial strains were isolated. In pure culture, 0. 75% 80. 77% of the 50 mg/L chlorimuron-ethyl was decomposed after 7 days incubation. Results of 16S rDNA sequencing and phylogeny analysis showed that 21 chlorimuron-ethyl degrading bacterial strains belong to Enterobacter, Pseudomortas, Citrobacter , Stenotrophomonas , Achromobacter , Brevibacterium , Shigella respectly.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2013年第5期92-96,共5页
Soil and Fertilizer Sciences in China
基金
公益性行业(农业)科研专项经费(201203045)
关键词
氯嘧磺隆
生物降解
菌株筛选
系统发育
chlorimuron-ethyl
biodegradation
strain screen
phylogeny
