一株基于高通量测序降解亚硝酸盐芽孢杆菌的筛选Screening of a Nitrite-Degrading Bacillus Strain Based on High-Throughput Sequencing
孙全敏,马明昊,迟雪梅,迟乃玉,张庆芳
摘要(Abstract):
目前对降解亚硝酸盐菌种研究最多的为乳酸菌,造成在亚硝酸盐降解方面菌种的研究力度不高。为挖掘降解亚硝酸盐菌种的物种丰度及利用度,利用高通量测序技术对具有降解亚硝酸盐能力的两个菌群进行分析。结果展现了两个菌群的微生物多样性、 KEGG代谢途径及COG功能。在属等级上,菌群FXH1包括10个属,BFXH2包括8个属。在BFXH2中,芽孢杆菌属(Bacillus)所占相对丰度最大,为56.4%,从中选取编号为“8”的菌株进行NCBI比对鉴定,为芽孢杆菌属(Bacillus)。鉴定结果与高通量测序结果一致,同时测定该菌对亚硝酸盐的降解率为99.7%。该种筛选策略不仅可以大大提高对亚硝酸盐降解菌种资源的利用,减少目的菌种的鉴定时间,而且还可进一步了解其应用前景,大大提高了选菌及鉴定的效率。
关键词(KeyWords): 亚硝酸盐降解菌;高通量测序;芽孢杆菌
基金项目(Foundation): 辽宁自然科学基金(2014020134);; 国家重点研发计划海洋技术与装备领域课题(2018YFC0311100)
作者(Author): 孙全敏,马明昊,迟雪梅,迟乃玉,张庆芳
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