摘要
汞污染对环境和人类危害极大,有些微生物对其具有抗性,可用于修复受汞污染的环境。从重金属污染的土壤中分离纯化出一株高抗汞细菌(DC1),其汞的最小抑菌浓度(MIC)达到20.3mg/L。经16S rRNA序列测序鉴定,该菌属于恶臭假单胞菌( Pseudomonas putida )。摇瓶培养发现其最适pH值为5~8,且在8h内可以快速挥发超过68%的Hg^ 2+,具有对汞污染环境的生物修复的应用潜力。
Mercury contamination has dangerous hazard to natural environment and human being. Some bacteria could resist mercury, which could be applied to restore the environment polluted by mercury. One Mercury-resistant bacteria (DC1) was separated and purified from the soil contaminated by heavy metals. Its least mercury resistant concentration (MIC) could reach 20.3 mg/L. Thisbacterium belongs to Pseudomonas putida according to 16S rRNA sequencing identification test. The most suitable pH value for the bacteria fell between 5 and 8 based on shake flask culture. Furthermore, it would quickly volatilize more than 68% of dimercurion within 8 hours, which indicated the potentiality of biologically restoring the mercury contaminated environment.
作者
郑燕平
钱妃彦
陈文秀
陈金全
ZHENG Yan-ping;QIAN Fei-yan;CHEN Wen-xiu;CHEN Jin-quan(Cancer Research Laboratory, the First Affiliated Hospital of Xiamen University, Xiamen Fujian 361005, China)
出处
《环境科学导刊》
2019年第5期7-9,共3页
Environmental Science Survey
基金
国家自然科学青年基金(51408532)
云南大学大学生创新创业训练项目(201710673017,201810673013)
关键词
抗汞细菌
筛选
汞污染
生物修复
特性
mercury-resistant bacteria
select
mercury contamination
biological restoration
characteristic
