摘要
从农药厂下水道污泥中分离、筛选到1株能够在好氧条件下降解DDT的细菌菌株DB-1,根据表型特征、生理生化特性及16S rDNA序列的系统发育分析,将菌株DB-1初步鉴定为鞘氨醇单胞菌属(Sphingomonas sp).该菌株能在含酵母膏(40mg/L)的DDT(40mg/L)无机盐液体培养基中降解DDT,10d降解率达到83.6%,菌株DB-1在25～30℃长势较好,最适生长pH值为8.0.
A bacterium strain DB- 1 capable of degrading DDT under the aerobic condition was isolated and screened from the sewer sludge of a pestcide factory. Based on the phenotype, physiological and biochemical characteristics, and the phylogenetic analysis of 16S rDNA sequence, the strain DB-1 was identified preliminarily as Sphingomonas sp. This strain could degrade DDT in inorganic salt liquor culture base of DDT （40mg/L） containing yeast cream （40mg/L）, with degradation efficiency reaching 83.6% in 10 days. The strain DB-1 growed better at 25-30℃, with most adaptable pH value of 8.0.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2005年第6期674-677,共4页
China Environmental Science
基金
国家"863"项目(2004AA246070
2004AA214102)
国家自然科学基金资助项目(30400013)
江苏省科技厅项目(BG2005322)
