阿特拉津降解菌FM326(Arthrobacter sp.)的分离筛选、鉴定和生物学特性--《农业环境科学学报》2011年11期

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阿特拉津降解菌FM326(Arthrobacter sp.)的分离筛选、鉴定和生物学特性

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rfQG A WH+UD0【摘要】:采集除草剂阿特拉津污染的土壤,通过直接涂布法和富集驯化培养分离法,分别获得6株和5株能够降解阿特拉津的细菌。通过降解效率和降解动态试验,筛选到1株高效降解阿特拉津的菌株FM326,该菌株能以阿特拉津为唯一的碳源和氮源生长,培养96h后对1000mg·L-1阿特拉津降解效率达到97%。通过生理生化鉴定和16SrDNA序列分析,菌株FM326鉴定为节杆菌属(Arthrobacter sp.)细菌。该菌株表现出最适生长温度30~35℃,最适生长pH值5~9,好氧生长的生长特性。水利论文 l+cp:Z6L&],V

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【作者单位】:

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云南农业大学资源与环境学院;

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【关键词】:

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@+i+oe3G-j0阿特拉津 降解菌 节杆菌属 降解效率

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【基金】:云南省自然科学基金项目(2010CD058)水利论文)D1FD[4a

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L JH;`h5Q2Y1H{c}0【分类号】:X172

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3D tkn |U(j:}0【正文快照】:水利论文#m1e Qi{#Yo

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阿特拉津(Atrazine)又名莠去津,化学名称是2-氯-4-乙氨基-6-异丙氨基-1,3,5三嗪,是一种广泛使用的除草剂。阿特拉津不易挥发,易在土壤和水体中流动,易溶于水,不易吸附在土壤或沉淀物上。阿特拉津在土壤中的半衰期是8~99d,而在水体中的半衰期是41~237d,因环境条件的不同而不同[

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