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不同生境产脂肪酶菌株的筛选及多样性

DOI: 10.3724/SP.J.1145.2012.00455, PP. 455-459

Keywords: 产脂肪酶菌株,碱性脂肪酶,eric-pcr,青海高寒草地

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Abstract:

为发掘不同特性脂肪酶微生物资源,采用纯培养方法从青海高寒草地、雅安山区、成都平原分离得到产脂肪酶菌株54株.通过对菌株的dna进行eric-pcr指纹图谱分析,按聚类树划分为5个操作分类单元.16srdna序列测定和聚类分析显示,分离菌株分布于芽孢杆菌属(bacillus)、克雷伯氏菌属(klebsiella)、假单胞菌属(pseudomonas)、葡萄球菌属(staphylococcus)、肠杆菌属(enterobacter).多样性分析表明,与青海高寒草地、雅安山区相比,成都平原产脂肪酶菌株遗传多样性更为丰富.在54株菌中都出现了300bp和1300bp两个特异且稳定出现的条带,这两个特异条带可能是产脂肪酶菌株的scar标记条带.

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