OALib Journal期刊
ISSN: 2333-9721
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一株菲降解菌的特性及相关降解基因的克隆
DOI: 10.3724/SP.J.1145.2009.00682, PP. 682-685
Keywords: 菲,生物降解,降解途径,phda基因
Abstract:
从石油污染土壤中分离到一株菲降解菌2f5-2.根据该菌株生理生化特征和16srdna序列相似性分析,将其初步鉴定为鞘氨醇杆菌属(sphingobiumsp.).该菌株在10h内对100mg/l的菲的降解率为100%.降解菲的最适温度为30℃,最适ph为7.对降解途径的初步研究显示,该菌株通过水杨酸途径降解菲.克隆了编码芳香烃双加氧酶α亚基的基因phda,它与菌株sphingomonassp.p2、sphingobiumyanoikuyaeb1、sphingomonassp.zp1中phda的同源性分别为97.9%、98%和100%,表明该基因具有保守性.图6参16
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