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3sshanshan

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[求助] 新种的判断

我筛选出一株细菌,16SrDNA测序之后输入到Blast软件,发现与待鉴定菌株PYR09同源性最近的菌株烟酸芽孢杆菌(Bacillus niacini ),巴达维亚芽孢杆菌(Bacillus bataviensis)同源性为98.3%;与新型菌株Bacillus ginsengisoli同源性为98.6%,与菌株Bacillus pocheonensis 同源性为98.1%,与其他菌株同源性都低于98%,我调取相关菌株16SrDNA部分序列用MEGA5.0构建系统发育树,发现待鉴定菌株与它同一枝菌株的置信度只有30%多,不到40%,我想问一下这样的菌株可能新菌株吗?有必要进行新菌株鉴定吗?

新种的判断
N-J系统发育树.jpg
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